| Entries |
| Document | Title | Date |
|---|
| 20080197075 | REMOVING MERCURY AND OTHER HEAVY METALS FROM INDUSTRIAL WASTEWATER - A method of removing one or more heavy metals including mercury from industrial wastewater by use of a filtration and/or a solid-liquid separation system by use of a water soluble ethylene dichloride ammonia polymer. | 08-21-2008 |
| 20080203016 | Cleaning in Membrane Filtration Systems - A projectile of non-lethal composition includes an outer casing that is substantially sealed prior to impact with a target both when the projectile is in a static condition and when the projectile is in a dynamic condition. A marking material is encapsulated within the outer casing prior to impact. The outer casing is configured to deform and unseal upon impact such that the marking material disperses forward via hydraulic action. | 08-28-2008 |
| 20080203017 | Chemical Clean For Membrane Filter - A method of cleaning a porous polymeric membrane having a feed side and a permeate side including the steps of introducing a fluid containing a cleaning agent to the permeate side of a membrane allowing the cleaning agent to contact the permeate side of the membrane for a predetermined time, and contact the pores of the membrane, or introducing a fluid containing a cleaning agent to the feed side of a membrane; applying a transmembrane pressure to force the fluid containing the cleaning agent from the feed side to the permeate side of the membrane; allowing the cleaning agent to contact the permeate side of the membrane for a predetermined time, and contact the pores of the membrane. Preferably a concentration gradient between the feed side fluid and the lumen side fluid containing the cleaning agent causes cleaning agent to diffuse into the feed side fluid. Pressure may be applied to the fluid containing a cleaning agent to dislodge, where present, dissolved and undissolved solid from the membrane pores. The pressure may be applied in a pulsed fashion, and can be by way of compressed air at a pressure not more than the membrane's bubble point. The methods of the present invention may be preceded by, or followed with a backwash. | 08-28-2008 |
| 20080203018 | Monopersulfate Treatment of Membranes - A method of improving the water permeability and/or cleaning a porous polymeric microfiltration or ultrafiltration membrane, preferably a hydrophobic/hydrophilic blended membrane, eg P VdF/PVP comprising the step of contacting the porous polymeric membrane with a source of monopersulfate, preferably an aqueous solution of | 08-28-2008 |
| 20080203019 | MEMBRANE BATCH FILTRATION PROCESS - A membrane batch filtration process has a step of reducing the water level in the tank by permeation prior to emptying the tank to reduce the volume of water drained after each batch. Permeation may continue even after a portion of the membranes is exposed to air to further lower the water level. The membranes may be backwashed after the water level has been lowered. The water level may be lowered again after the backwash. The tank drain may begin with a portion of the membranes exposed to air. | 08-28-2008 |
| 20080217243 | METHOD FOR CLEANING FOREIGN MATERIALS FILTERING APPARATUS - In a method for cleaning the foreign materials filtering, foreign materials collected in a foreign materials filtering space can be easily removed under a filter unit is separated from or is mounted at a filter cover unit. As a result, can be solved the conventional problems that a net filter has to be kept inside out at the time of a cleaning process to cause a user's hands to become dirty, and there is a difficulty in removing foreign materials from the net filter due to a fibrous characteristic of the net filter. Accordingly, a cleaning operation for the foreign materials filtering apparatus can be facilitated. | 09-11-2008 |
| 20080217244 | Water Treatment Method Comprising a Rapid Settling Step Followed by a Filtration Step Directly on Micro- or Ultra-filtration Membranes, and Corresponding Device - A method for treating water includes directing the water to a ballasted flocculation system and mixing a coagulant, flocculant and a ballast with the water. Solids are separated from a clarified effluent at a speed greater than 15 m/h. The method further includes filtering the clarified effluent with one or more microfiltration membranes or ultrafiltration membranes to produce filtered water. Thereafter directing the filtered water to an RO unit or a nanofiltration membrane or membranes and subjecting the filtered water to filtration by the RO unit or the nanofiltration membrane or membranes. | 09-11-2008 |
| 20080237125 | METHOD OF CLEANING MEMBRANES - The present invention relates a method for cleaning polymeric microfiltration membranes and membrane units, and to compositions useful in such methods. The compositions include at least one soluble sulfite reducing agent and a compatible solvent. | 10-02-2008 |
| 20080251455 | Cyclic Aeration System for Submerged Membrane Modules - An aeration system for a submerged membrane module has a set of aerators connected to an air blower, valves and a controller adapted to alternately provide a higher rate or air flow and a lower rate of air flow in repeated cycles. In an embodiment, the air blower, valves and controller, simultaneously provide the alternating air flow to two or more sets of aerators such that the total air flow is constant, allowing the blower to be operated at a constant speed. In another embodiment, the repeated cycles are of short duration. Transient flow conditions result in the tank water which helps avoid dead spaces and assists in agitating the membranes. | 10-16-2008 |
| 20080257822 | Reduced Backwash Volume Process - A method of backwashing a membrane filtration module, where the module includes one or more membranes located in a feed-containing vessel. The membranes having a permeable wall which is subjected to a filtration operation wherein feed liquid containing contaminant matter is applied to one side of the membrane wall and filtrate is withdrawn from the other side of the membrane wall. The method includes the steps of suspending the filtration operation; aerating the membrane surface with gas bubbles to dislodge fouling materials therefrom; recommencing the filtration operation while suspending the flow of feed liquid to the feed-containing vessel for a predetermined period; again suspending the filtration operation; performing a liquid backwash of the membrane wall to dislodge fouling materials therefrom; removing at least some of the liquid containing the dislodged contaminant matter from the feed-containing vessel; and then recommencing the filtration operation. | 10-23-2008 |
| 20080308494 | Fluid sampling interface apparatus - A sampling apparatus and method for sampling is provided that achieves automatic, aseptic, extractive sampling of fluid samples from fluid sources containing high solids and/or high viscosity fluid without failing due to adverse interactions between the fluid and the sampling device such as clogging or fouling due to mechanical means or to physicochemical reactions between the fluid and the materials of construction of the sample device. | 12-18-2008 |
| 20080314833 | COAGULANT DOSING PROCESS FOR MEMBRANE FILTRATION - A filtration process has a coagulation step and a membrane filtration step. The membrane filtration step has a permeation step followed by a cleaning step. In the coagulation step, a coagulant is added to feed water during a period of time beginning generally at the start of the permeation step and ending in a range from about 50% to 85% of the duration of the permeation step. | 12-25-2008 |
| 20090001018 | Operating Strategies in Filtration Processes - A method of operating a membrane filtration system having a number of repeated operation cycles, the method including the step of varying the values of one or more operating parameters of the system associated with a particular operation cycle between and/or during one or more repetitions of the operation cycle. Membrane filtration systems operating in accordance with the method are also disclosed. | 01-01-2009 |
| 20090008330 | Method and a System for Performing Maintenance on a Membrane Used for Pressure Retarded Osmosis - A method and system for performing maintenance on a membrane having semi-permeable properties and is used in a pressure retarded osmosis PRO, the membrane having a high pressure first side and second side of lower pressure. A time controllable first valve or pump ( | 01-08-2009 |
| 20090050563 | Treatment method for reverse osmosis filtration systems - A method for cleaning and maintaining reverse osmosis membrane filters by injecting sulfurous acid into water and then sequentially filtering the acidified water through membrane filters to reduce alkalinity scaling, add sufficient SO | 02-26-2009 |
| 20090057222 | MEMBRANE CARD AND METHOD FOR THE PRODUCTION AND USE THEREOF - Processes are provided for producing porous track membranes, membrane cards, membrane packages, separation elements, separation units and separation systems, for using the same for the separation of materials from fluids, and for determining the maximum pore diameter of membranes. Porous track membranes are produced by exposing a polymeric film to a bombardment of heavy ions to provide the film with a track density, etching pores into the resulting tracked film with an etching solution to provide the film with a density of the pores corresponding to the track density and laminating the resulting porous track membrane to a porous backing by means of an adhesive to produce membrane cards. Membrane packages and a turbulizer are spirally wound around a fluid collection tube to form a separation unit. The separation unit is included in a separation system with a processed fluid accumulator, pipes for the source, unprocessed, and processed fluids, a pressure transducers in fluid communication with the pipes for the processed and unprocessed fluids to control the timing of back flushing of the separation system when the membranes reach a high level of retention of materials separated from the source fluid. | 03-05-2009 |
| 20090057223 | APPARATUS AND METHOD FOR TREATING INJECTION FLUID - An apparatus for treating a fluid to be injected into a subterranean hydrocarbon-bearing formation includes a filtration unit having one or more filtration membranes including either or both ultra-filtration membranes and microfiltration membranes, and an ionic species removal plant, wherein fluid to be injected is first treated by the filtration unit and then treated by the ionic species removal plant. In a preferred embodiment, the ionic species removal plant is a sulfate removal plant which incorporates nano-filtration membranes. A method of treating fluid to be injected into a subterranean formation is also disclosed. A cleaning system and method for use in an apparatus for treating injection fluid is also disclosed. | 03-05-2009 |
| 20090065432 | METHOD AND APPARATUS FOR REMOVING METAL SULPHIDE PARTICLES FROM A LIQUID STREAM - The invention provides a method for removal of metal sulphide particles from a liquid stream comprising a solvent and metal sulphide particles, using a filter system comprising at least one membrane, the method comprising contacting the liquid stream with the membrane, thereby transferring metal sulphide particles from the liquid stream onto the membrane surface to obtain a liquid stream depleted of metal sulphide particles and a filter system comprising a membrane enriched in metal sulphide particles. The invention further provides an apparatus for removal of metal sulphide particles from a liquid stream comprising a solvent and metal sulphide particles, wherein the apparatus comprises a solvent regenerator column ( | 03-12-2009 |
| 20090071901 | SYSTEM AND METHOD FOR FILTERING LIQUIDS - In one aspect, the invention is directed to methods and systems for filtering water using membranes. The methods and systems provide for controlling water levels in a tank with membranes immersed therein to control any of various conditions in the tank, such as the gas flow from aerators in the tank, the level of circulation of water in the tank, and the residence time of bubbles in the tank. | 03-19-2009 |
| 20090101575 | Liquid To Liquid Biological Particle Concentrator - A rapid one-pass liquid filtration system efficiently concentrates biological particles that are suspended in liquid from a dilute feed suspension. A sample concentrate or retentate suspension is retained while eliminating the separated fluid in a separate flow stream. Suspended biological particles include such materials as proteins/toxins, viruses, DNA, and/or bacteria in the size range of approximately 0.001 micron to 20 microns diameter. Concentration of these particles is advantageous for detection of target particles in a dilute suspension, because concentrating them into a small volume makes them easier to detect. Additional concentration stages may be added in “cascade” fashion, in order to concentrate particles below the size cut of each preceding stage remaining in the separated fluid in a concentrated sample suspension. This process can also be used to create a “band-pass” concentration for concentration of a particular target size particle within a narrow range. | 04-23-2009 |
| 20090107915 | TREATMENT PROCESS AND SYSTEM FOR WASTEWATER, PROCESS WATERS, AND PRODUCED WATERS APPLICATIONS - A method for the removal of contaminants from a contaminated water stream, by pretreating the contaminated water stream to yield a pretreated water stream, wherein pretreating comprises passing the contaminated water stream to at least one electrocoagulation cell wherein coagulation of contaminants is promoted, yielding an electrocoagulated stream; and separating coagulated contaminants from the electrocoagulated stream. | 04-30-2009 |
| 20090107916 | MODULE CLEANING METHOD - An aeration/backwash device ( | 04-30-2009 |
| 20090114593 | Method for Filling and Rinsing a Set of Blood Lines - The invention relates to a method for the filling and flushing of a blood tube set, comprising a pump segment for a blood pump, an arterial line connected to an inlet of a dialysis machine and a venous line connected to an outlet of a dialysis machine, via a substituate line. In this connection, it comprises the steps of the connection of the arterial line to the venous line and of the connection of these two lines to a rinse port, connection of the substituate line to a substituate port, opening of the rinse port, filling the arterial and venous lines, flushing the arterial and venous lines, closing of the rinse port, circulation of the substituate in the circuit of arterial line, dialysis machine and venous line by the blood pump, with it being characterized in that the filling and/or the flushing of the arterial and venous lines take/takes place simultaneously, with substituate being supplied from the substituate line. | 05-07-2009 |
| 20090120873 | FILTRATION WITH INTERNAL FOULING CONTROL - Filtration processes and systems are provided for the separation of a filterable fluid stream by a filtration membrane module with uniform transmembrane pressure and flux along the membrane and internal control of membrane fouling via intermittent periodic reduction of the pressure differential between the permeate and retentate sides of the membrane and/or backwashing cycles during separation, recovery, and/or purification of proteins, peptides, nucleic acids, biologically produced polymers and other compounds or materials from aqueous fluids. | 05-14-2009 |
| 20090127193 | Dialysis Systems and Methods - This disclosure generally relates to dialysis systems and related methods. In one aspect of the invention, a dialysis system includes a device configured so that a medical fluid can pass therethrough, and the device is adapted to remove one or more substances from the medical fluid as the medical fluid passes through the device. The dialysis system can also include a sodium control system adapted to alter a sodium concentration of the medical fluid. | 05-21-2009 |
| 20090134092 | MEMBRANE FILTRATION DEVICE AND PROCESS - An element for use in ultrafiltration or microfiltration of potable water has a large number of small diameter hollow fibre membranes attached between two headers. Side plates attached to the sides of the headers define vertical flow channels containing the membranes. The elements may be placed side by side and stacked on top of each other to form cassettes having continuous vertical flow channels through the entire cassette. The membrane modules or cassettes may be arranged to cover a substantial part of the cross sectional area of an open tank. Tank water may flow upwards or downwards through the flow channels. A tank may be deconcentrated by at least partially emptying and refilling the tank with fresh water while permeation continues. Excess tank water created during deconcentration may flow generally upwards through the modules and out through a retentate outlet or overflow at the top of the tank. | 05-28-2009 |
| 20090145845 | METHOD AND APPARATUS FOR THE FILTRATION OF BIOLOGICAL SAMPLES - A separation module and method are disclosed for processing a liquid sample and providing high conversion by operating a single-pass tangential-flow process without a recirculation loop. In one embodiment, the separation module includes three reservoirs and has at least one long, thin channel with a large ratio of channel membrane area to: channel void volume; volume of a sample feed reservoir; and volume of the feed sample. In another embodiment, the separation module includes two reservoirs and a hydrophobic vent. The single-pass process provides high conversion while operating with relatively low pressure sources. | 06-11-2009 |
| 20090152197 | System for Energy Recovery and Reduction of Deposits on the Membrane Surfaces in (Variable Power and Variable Production) Reverse Osmosis Desalination Systems - A method and a device for desalination, that operates with reverse osmosis membranes ( | 06-18-2009 |
| 20090152198 | MEMBRANE FILTER FOR WATER TREATMENT - The invention relates to a membrane filter for water treatment, comprising a head piece including a permeate collecting chamber with a permeate outlet, and at least one fiber bundle made from capillary membranes, which are secured into the head piece with an end that is open towards the permeate collecting chamber and sealed on the opposite end thereof. The head piece contains an air duct to which the mouth piece that protrudes into the fiber bundle is connected with at least one air outlet. At its other end, the fiber bundle terminates in freely movable manner in the untreated water. | 06-18-2009 |
| 20090166290 | AUTOMATED LOW VOLUME CROSSFLOW FILTRATION - The invention provides an automated crossflow filtration method and system for separating a component of interest from one or more other components in a solution. The invention is of particular use in the field of protein separations and concentration, where specific proteins must be separated and purified from cell lysates and cultures. The system may be under the control of a computer software programme. | 07-02-2009 |
| 20090178972 | Use of an Adsorbent for the Removal of Liquid, Gaseous and/or Dissolved Constituents From a Process Stream - A method for removing liquid, gaseous and/or dissolved constituents from an aqueous stream includes contacting the aqueous stream with a porous material and then contacting the aqueous stream with an adsorbent material. The porous material includes pores having an average diameter of approximately 0.01 μm to approximately 50 μm and an extraction liquid immobilized within at least a portion of the pores. | 07-16-2009 |
| 20090188860 | Use of antimicrobials in water technology - The use of dihalogeno-hydroxydiphenyl ethers as antimicrobial agents in water treatment processes, such as in purification and decontamination of drinking or waste water, is claimed. Preferably the water treatment is performed in a membrane filtration system. The antimicrobial agents protect the membrane system against bacterial and/or algal decay and assist in maintaining a high efficiency of the membrane filtration process. Methods of maintaining membrane filtration efficiency using dihalogeno-hydroxydiphenylethers as well as aqueous antimicrobial rinsing liquors comprising dihalogeno-hydroxydiphenylethers are also claimed. | 07-30-2009 |
| 20090188861 | Preventing and cleaning fouling on reverse osmosis membranes - A method of controlling fouling of a reverse osmosis membrane disposed in an aqueous medium by an inorganic foulant involves providing a fouling control agent comprising an acidic polysaccharide such as alginic acid fouling control agent dissolved in the aqueous medium in an amount effective to reduce, reverse, or prevent fouling by an inorganic foulant. | 07-30-2009 |
| 20090194477 | INTERMITTENT GAS FLOW APPARATUS AND MEMBRANE SEPARATION APPARATUS - Intermittent gas flow and membrane separation apparatus and methods of use including an internal gas chamber including an upper wall; at least one inlet for supplying gas to the internal gas chamber; a column pipe that extends above the upper wall of the internal gas chamber, the column pipe including a lower end portion including a lower end portion opening in the internal gas chamber, the column pipe linking the internal gas chamber to an area external to the internal gas chamber for fluid flow between the internal gas chamber and the external area; an auxiliary pipe including one end portion connected to the column pipe for fluid flow between the auxiliary pipe and the column pipe, and another end portion branched off from the column pipe, the another end portion including an opening located in the internal gas chamber at a position higher than the lower end portion opening of the column pipe by a predetermined height; and an auxiliary pipe external tubular member including a closed end, the auxiliary pipe external tubular member surrounding the another end portion of the auxiliary pipe with the closed end being positioned below the opening in the another end portion of the auxiliary pipe, and spaced from the another end portion by a predetermined distance permitting fluid flow into the space between the wall of the tubular member and the auxiliary pipe. | 08-06-2009 |
| 20090194478 | Reverse Osmosis System - Embodiments of the invention provide a reverse osmosis system including a feed water inlet, a reverse osmosis module coupled to the feed water inlet, and at least one blend valve. The blend valve can be coupled to a permeate outlet and the feed water inlet and can be capable of blending the feed water and the permeate water to produce mixed water. The blend valve can be adjusted to achieve a desired TDS level in the mixed water. | 08-06-2009 |
| 20090200233 | METHODS AND DEVICES FOR THE REMOVAL OF ORGANIC CONTAMINANTS FROM WATER - Compositions, methods and devices for the removal of organic contaminants from fluids using hydrophobic micro-porous adsorbents, which are regenerated by advanced oxidation. | 08-13-2009 |
| 20090200234 | METHODS FOR CLEANING SURFACES WITH ACTIVATED OXYGEN - The present invention provides methods for cleaning surfaces that are sensitive to high temperatures and/or that have pH limitations. Exemplary surfaces to be cleaned using the methods of the present invention include membranes. The methods of the present invention include applying an active oxygen use solution including an active oxygen source to the surface. An activator complex and an alkaline override use solution are applied to the surface, either in combination, or in a stepwise manner, before, after or simultaneously with the active oxygen use solution. | 08-13-2009 |
| 20090206035 | Vinylidene Fluoride Resin Hollow Filament Porous Membrane, Water Filtration Method Using the Same, and Process for Producing Said Vinylidene Fluoride Resin Hollow Filament Porous Membrane - A hollow-fiber porous membrane, comprising a hollow fiber-form porous membrane in a network texture of vinylidene fluoride resin showing a pore size distribution in a direction of its membrane thickness including an outer surface-average pore size P1 as measured by a scanning electron microscope and a membrane layer-average pore size P2 as measured by half-dry method giving a ratio P1/P2 of at least 2.5. The hollow-fiber porous membrane is excellent in long-term water filtration performance including efficiency of regeneration by air scrubbing. The hollow-fiber porous membrane is produced through a process, wherein a mixture of vinylidene fluoride resin, a plasticizer and a good solvent for vinylidene fluoride resin, is melt-extruded in a hollow-fiber film and cooled and formed into a solidified film within a cooling medium containing at least a certain proportion of a good solvent for vinylidene fluoride resin. | 08-20-2009 |
| 20090206036 | METHOD FOR CLEANING RECLAIMED WATER REUSE DEVICE - A method for cleaning a reclaimed water reuse device, the reclaimed water reuse device comprising a clean water supply device, a first aeration device, a backwash device and a membrane module, the method comprising detecting an operating signal of the clean water supply device; enabling the first aeration device or the backwash device according to the operating signal, so as to perform backwash of the membrane module; and completing washing back and restoring to a normal operating state. | 08-20-2009 |
| 20090211973 | Method and Apparatus for Repositioning Flow Elements In a Tapered Flow Structure - A method for operating a tapered flow pressure driven arrangement containing a plurality of membrane modules, which comprises positioning said membrane modules in at least two successively arranged flow stages, such that the number of membrane modules operating in parallel in a given flow stage is greater than their number in the consecutive flow stage, passing a feed stream through a flow stage to generate a permeate and a concentrate, directing said concentrate to the consecutive flow stage and passing said concentrate therethrough, while periodically replacing one or more of the membrane modules belonging to said consecutive flow stage with one or more membrane modules belonging to the previous flow stage, wherein the periodicity of said replacement is such that the surface of membranes disposed in said consecutive flow stage is exposed to super-saturation conditions associated with the passage of said concentrate for a period of time that is shorter than the time required for said concentrate to precipitate therefrom one or more sparingly soluble salts and/or minerals, onto the surface of the membranes in said consecutive flow stage under said super-saturation conditions, or before deposit of organic substances can occur in the first of said two or more successively arranged flow stages. An apparatus for carrying out the aforementioned method is also provided. | 08-27-2009 |
| 20090211974 | WATER CLARIFYING APPARATUS AND IMPLEMENTING METHOD - The invention concerns a water clarifying device comprising a flotation zone (c), a membrane-based filtering zone (e) and extracting means (d), the flotation zone (c) and the membrane-based filtering zone (e) having a common partition wall (P), the common partition wall (P) including in its lower part an opening (o) directly allowing through flotated water towards the filtering zone (e), thereby feeding the membranes with flotated water from down upwards both in filtering phase and in backwashing phase. | 08-27-2009 |
| 20090250397 | WATER SOFTENER WITH INTEGRATED WATER FILTRATION - Systems and methods for filtering and softening water in combination are disclosed. The systems may include a water filtering system, having a water filter and a water softening system connected to the water filtering system. In addition, a controller may be connected to the water filtering system and the water softening system via wired or wireless connections. The methods may include filtering incoming water, monitoring the hardness of the incoming water, and softening the incoming water when the water hardness is above a maximum level. Furthermore, the performance of the water filtering system may be altered in response to the performance of the water softening system. In addition, the performance of the water softening system may be altered in response to the performance of the water filtering system. | 10-08-2009 |
| 20090250398 | SEAWATER DESALINATION SYSTEM AND METHOD - Desalination system includes a submersible module defining a water-receiving interior and including openings leading from the interior to an exterior, reverse osmosis (RO) membranes arranged in each opening such that the RO membrane is exposed to seawater when the module is submersed, a pump arranged in connection with the interior of module, and a movement system for adjusting the vertical depth at which the module is submersed. The movement system can move the module in vertical and horizontal directions, in any predetermined pattern, or in vertical—horizontal planes defined by the movement system from one location to another location to prevent an elevated salt concentration in an area adjacent the RO membranes and to thereby maintain the osmotic pressure of the seawater in the area adjacent the RO membranes low. | 10-08-2009 |
| 20090255872 | AERATING DEVICE FOR A WATER FILTERING SYSTEM WITH IMMERSED MEMBRANES, INCLUDING A FLOOR PROVIDED WITH MEANS FOR INJECTING A GAS AND AT LEAST ONE PRESSURE BALANCING SYSTEM - An aerating device for a water treatment system includes an upper and lower chamber separated by a partition. The upper chamber includes a plurality of immersed membranes for removing contaminants from the water. The lower chamber includes a gas inlet and a water inlet for directing gas and water to be treated respectively into the lower chamber. The water inlet is disposed at a lower depth in the lower chamber than the gas inlet. A plurality of air dispersers extend through the partition from the lower chamber to the upper chamber for directing gas from the lower chamber to the upper chamber to aerate the immersed membranes. Finally, the device includes at least one passageway extending through the partition from the lower chamber to the upper chamber for directing water to be treated from the lower chamber to the upper chamber. | 10-15-2009 |
| 20090255873 | LOW PRESSURE BACKWASH - A method of backwashing a membrane filtration system comprising at least one permeable hollow membrane, the method comprising the step of applying a low-pressure gas to the permeate remaining present in the system when the filtration process is stopped or suspended to provide liquid for backwashing the pores of the membrane during a backwashing process. | 10-15-2009 |
| 20090261038 | Steam-Sterilizable Blood Separating Device - The invention relates to a device ( | 10-22-2009 |
| 20090266762 | METHOD FOR OPERATING REVERSE OSMOSIS MEMBRANE FILTRATION PLANT, AND REVERSE OSMOSIS MEMBRANE FILTRATION PLANT - A method for operating a reverse osmosis membrane filtration plant having a raw water intake unit, a pre-treatment unit, and a reverse osmosis membrane filtration unit having a reverse osmosis membrane module in this order, the method including: disposing a biofilm formation base material under conditions that reverse osmosis membrane supply water and/or reverse osmosis membrane non-permeated water in the reverse osmosis membrane filtration unit are/is flowed at a linear speed equal to a non-permeated water linear speed in the reverse osmosis membrane module of the reverse osmosis membrane filtration unit; evaluating a biofilm amount on the biofilm formation base material at a frequency of from once a day to once in six months; and controlling the method for operating a reverse osmosis membrane filtration plant based on results of the evaluation. | 10-29-2009 |
| 20090314712 | MEMBRANE FILTRATION OF A PRODUCT - The invention refers to a method for membrane filtration of a product in a membrane plant ( | 12-24-2009 |
| 20090314713 | Cross-flow filtration apparatus with biocidal feed spacer - A cross-flow filtration apparatus is provided. The cross-flow filter is a spiral wound filter that includes a semi-permeable membrane wrapped around a perforated central tube. The semi-permeable membrane includes a feed spacer and a membrane. The feed spacer is a biocidal feed spacer with a biocidal agent impregnated within the feed spacer to prevent biofouling of the feed spacer and the membrane. | 12-24-2009 |
| 20100000941 | SIMPLE GAS SCOURING METHOD AND APPARATUS - A method of cleaning a membrane ( | 01-07-2010 |
| 20100000942 | MONOPERSULFATE TREATMENT OF MEMBRANES - A method of improving the water permeability and/or cleaning a porous polymeric membrane (such as a microfiltration or ultrafiltration membrane comprising the step of contacting said a porous polymeric membrane with a source of monopersulfate and a halide ion, such as chloride and optionally a base. The source of monopersulfate may be potassium monopersulfate in conjunction with potassium hydrogen sulfate and potassium sulfate, ie a triple salt of formula 2KHSO | 01-07-2010 |
| 20100012585 | MEMBRANE FILTRATION PROCESS AND DESIGN - A membrane filtration system ( | 01-21-2010 |
| 20100018921 | Reverse osmosis water recover method - A method for cleaning and maintaining reverse osmosis membrane filters by injecting sulfurous acid into water to form sulfurous acid (H | 01-28-2010 |
| 20100025327 | CYCLIC AERATION SYSTEM FOR SUBMERGED MEMBRANE MODULES - An aeration system for a submerged membrane module has a set of aerators connected to an air blower, valves and a controller adapted to alternately provide a higher rate or air flow and a lower rate of air flow in repeated cycles. In an embodiment, the air blower, valves and controller, simultaneously provide the alternating air flow to two or more sets of aerators such that the total air flow is constant, allowing the blower to be operated at a constant speed. In another embodiment, the repeated cycles are of short duration. Transient flow conditions result in the tank water which helps avoid dead spaces and assists in agitating the membranes. | 02-04-2010 |
| 20100044309 | Dynamic Filtration Device Using Centrifugal Force - The present invention generally relates to a filtration system having one or more apparatuses for filtering gases, liquids, or fluids (e.g., water) to remove particulate matter, and methods of making and using the apparatus. More particularly, embodiments relate to apparatuses and methods for applying centrifugal force(s) to push a fluid or gas to be filtered through a porous membrane or filter within the apparatus to separate particulate matter therefrom. The present invention takes advantage of the Coriolis effect within a cylindrical filter radiating out from a rotating central body. The filtration apparatus provides an energy efficient system for microfiltration (or other filtration process) to remove contaminants from gases and fluids, such as waste water. | 02-25-2010 |
| 20100051544 | Apparatus and method for backwashing filter membrane modules - An apparatus and a method for backwashing filter membrane modules arranged in parallel in the form of a plurality of module rows within a module rack and supplyable with raw water through supply/drain ports at each end face via respectively associated supply/drain lines, and each including a drain port on a wall side for the filtrate, to which a filtrate collection line is connected for draining the filtrate, wherein valve means are provided to control at least one filtration and backwashing mode, wherein, in the backwashing mode, a supply-side control valve of the first supply/drain lines carrying raw water of a module row is closed, but an associated drain-side control valve of the other supply/drain line of one module row serving to drain backwashing water is open, whereas the remaining supply-side control valves in the supply line carrying raw water of the remaining module rows are open, to ensure backwashing of the one module row of the module rack by the filtrate simultaneously produced by the other module rows. | 03-04-2010 |
| 20100051545 | MEMBRANE MODULE PROTECTION - A filtration system for removing fine solids from a liquid suspension comprising a vessel for containing the liquid suspension, one or more permeable, membranes ( | 03-04-2010 |
| 20100084338 | METHOD AND APPARATUS FOR TREATING BALLAST WATER - At the time of loading a ship, ballast water is sent to a ceramic filter membrane having a mesh of 9 to 12 μm by a filtration pump, and at the time of unloading, ballast seawater is sent to the membrane by the filtration pump to be filtrated under pressure. Thus, marine organisms larger in size than this mesh are removed. The permeated water containing marine organisms smaller in size than the mesh is sterilized with a chemical agent made of chlorine or ozone in a facility for sterilizing with chemical agent, and then discharged into the sea or poured into the ballast tank. With this, it is possible to purify a large amount of ballast water, in a short time, into a level at which the water quality standard according to the guideline can be cleared without requiring any large-sized facility or any high-concentration chemical agent. | 04-08-2010 |
| 20100089829 | MEMBRANE CLEANING METHOD AND APPARATUS - A membrane cleaning apparatus comprising two electrode plates and a filtration unit is provided, wherein the filtration unit is disposed between the electrode plates. The filtration unit comprises a supporting plate and a membrane, and the membrane is disposed on the support plate. This invention can effectively clean the fouling on the membrane by applying an electric field in the membrane region and performing a back flushing process on the membrane. Moreover, a membrane cleaning method is also provided. | 04-15-2010 |
| 20100096325 | METHOD OF OPERATING MEMBRANE SEPARATOR - A method of operating a membrane separator, in which a membrane module comprising a large number of exposed hollow fiber membranes is installed in an untreated water chamber, for making possible stable membrane filtering operation while maintaining a high yield by minimizing loads of the filter membranes and performing effective washing is to be provided, the method including a filtering step at which untreated water is filtered by giving a differential pressure between the primary side (untreated water side) and the secondary side (treated water side) of the hollow fiber membranes, a physical washing step of gas washing by ejecting a gaseous washing medium onto the primary side of the membrane module and of back-pressured water washing by feeding a backwashing medium from the secondary side of the hollow fiber membranes and letting it pass to the untreated water side of the hollow fiber membranes, and a drain step of discharging drain in the chamber out of the system after repeating twice or more the filtering step and the physical washing step. | 04-22-2010 |
| 20100096326 | METHOD TO CONTROL REVERSE OSMOSIS MEMBRANE BIOFOULING IN MUNICIPAL WATER PRODUCTION - A method of treating water for municipal use comprises treating the feedwater stream on the feed side of a reverse osmosis membrane with a non-oxidizing, bromine-containing biocide in the substantial absence of a reducing agent, such that biofouling of the membrane is reduced or prevented, and measuring the produced water stream on the permeate side for the presence of bromine-containing compounds. Advantages may include preservation of the membrane, production of water that meets applicable regulations for safe drinking, and simplified processing without additional steps to remove the biocide or its degradation products from the produced water. | 04-22-2010 |
| 20100101997 | METHOD OF ISOLATING TARGET SUBSTANCE USING MEMBRANE AND APPARATUS THEREFOR - A separation apparatus using a membrane for diafiltration, which provides precise fractionation of a target substance by monitoring and regulating permeability of the target substance based on measurement values and analytical values indicating separation status, such as physical values and concentration of a permeate liquid, a circulating liquid and an internal circulating liquid in a membrane device. A diafiltration process including adding a cleaning liquid to an treating liquid which contains multiple target substances and extracting a target substance into the permeate liquid supplied from a membrane separation apparatus to fractionate the target substance from other target substances remaining in a residual liquid. In the present invention, permeability of the target substance is controlled by regulating or controlling at least one operating parameter, such as a flow rate of the permeate liquid, operating pressure and temperature of the membrane separation apparatus, and concentration and amount of a circulating liquid, to a predetermined range based on a separation status index and/or a progress index of a separating operation. | 04-29-2010 |
| 20100101998 | Method for Treating Ship Ballast Water With Membrane - A method for treating ship ballast water with a membrane, which can easily separate and reliably remove a fouling substance attached to a membrane and maintain the membrane flux for long periods. | 04-29-2010 |
| 20100108601 | Method for Treating Ballast Water with a Membrane - To provide a method for treating ballast water with a membrane, which can reliably remove a fouling substance derived from a gel-like substance and a fouling substance of mineral origin, the fouling substances attached to a membrane, by separating or breaking down the fouling substances, and can maintain the membrane flux for long periods. | 05-06-2010 |
| 20100116736 | MECHANICAL AXIAL VIBRATION IN MEMBRANE SEPARATION TREATMENT OF EFFLUENTS - Apparatus and methods are disclosed for mechanical axial vibration in membrane separation treatment processes. The apparatus includes a separation membrane element having an axial dimension, a membrane support structure having the element therein, and means for vibrating the membrane element (hydrodynamically or using motors) in the axial dimension. | 05-13-2010 |
| 20100126933 | WASHER BATH USING CENTRIFUGE AND ULTRA FILTER - A part washing apparatus includes a centrifugal filter and an ultra filter provided as a single base unit. A washing chamber is provided to enclose one or more industrial parts for cleaning with a washing solution, which is collected in a washer bath. The washing solution is then pumped through a centrifugal filter to remove contaminants from the washing solution and subsequently pumped through an ultra filter a filter configured to remove further contaminants from the washing solution. | 05-27-2010 |
| 20100133181 | SYSTEMS AND METHODS FOR PROCESSING COMPLEX BIOLOGICAL MATERIALS - Method and systems, for processing biological material, that contain a biological material in a vessel; add an aggregating agent to the material in the vessel and allow the material to separate into two or more distinct submaterials; extract one or more of the submaterials from the vessel; automatically transport one or more of the submaterials remaining in the vessel to a filtration device; and collect a resulting target retentate into a target retentate receptacle. | 06-03-2010 |
| 20100133182 | MICROSPHERIC TIO2 PHOTOCATALYST - The present invention refers to titanium oxide microspheres having photocatalytic properties which can, for example, be used in a method for cleaning wastewater which uses a submerged membrane reactor. | 06-03-2010 |
| 20100133183 | FILTRATION SYSTEM - A filtration system includes a vessel for housing at least two filtration elements. One or more of the filtration elements is a reverse osmosis membrane or a nanofiltration membrane and one of the other filtration elements is a microfiltration or ultrafiltration membrane. The vessel has an inlet port for providing a liquid feed to the filtration elements, an outlet port for directing a permeate produced by the elements from the vessel and an outlet port for directing a concentrate produced by the elements from the vessel. A number of vessels can be provided in a parallel arrangement and/or a series arrangement and the vessels can be arranged so as to allow regeneration of the microfiltration or ultrationfiltration membranes from another vessel in the arrangement. | 06-03-2010 |
| 20100133184 | CLEANING AGENT FOR SEPARATION MEMBRANE, PROCESS FOR PREPARING THE CLEANING AGENT, AND CLEANING METHOD - Provided is a cleaning agent or cleaning method of a separation membrane which has cleaning effects equal or superior to those of conventional cleaning methods in cleaning a separation membrane used for filtration of drinking water, industrial water, river water, lake water, groundwater, reservoir water, secondary effluent, waste water, sewage water or the like; does not include a hypochlorite so that it neither generates a toxic gas nor adversely affects the human health; and needs less cleaning time owing to elimination of a rinsing step with a large amount of water. The cleaning agent or cleaning method according to the present invention is therefore safe and economical. Disclosed by the present invention is a preferred cleaning agent containing hydrogen peroxide, a heavy metal compound and a hydroxydicarboxylic acid, wherein the hydroxydicarboxylic acid is selected from the group consisting of malic acid, tartaric acid, tartronic acid, citramalic acid, dioxymaleic acid and dioxymalonic acid, while the heavy metal compound is an iron ion. | 06-03-2010 |
| 20100140170 | Filter cleaning method - A method cleans a plurality of filters in parallel, each a filter having an inlet side and an outlet side separated by a filter barrier. In an operational phase, water is filtered using a plurality of the filters, by passing the water through the filter, from the inlet side to the outlet side. These filters may be a hollow fiber membrane. In a cleaning phase, at least one of the filters is cleaned while the other filters are filtering water in the operational phase. Each filter is cleaned by supplying sodium hypochlorite to the inlet side of the filter when the filter is off-line. The inlet side of the filter is allowed to soak in the sodium hypochlorite for at least 30 seconds without the sodium hypochlorite being pressurized through the filter barrier during the soaking process. This oxidizes organic contaminates near the surface of the filter. The filters are cycled through the cleaning phase such that each filter is repeatedly cleaned while other filters are filtering in the operational phase. | 06-10-2010 |
| 20100155329 | SYSTEMS AND METHODS FOR FORWARD OSMOSIS FLUID PURIFICATION - A process for purification of fluids, for example, desalination of seawater or brackish water, using organic solutes in a concentrated water solution for use in a forward osmosis process, to extract fresh water out of salt water through the forward osmosis membrane, and subsequently separating the organic solutes out of the diluted forward osmosis permeate by cloud point extraction, thereby regenerating a concentrated organic solution for recycling to the forward osmosis process, and fresh water for potable water use. | 06-24-2010 |
| 20100170847 | MEMBRANE CLEANING USING AN AIRLIFT PUMP - A membrane module ( | 07-08-2010 |
| 20100176056 | METHOD FOR PREVENTING BIOFOULING ON SURFACES USING ULTRAVIOLET PRE-TREATMENT - A method for reducing bio-fouling formation on a liquid-contacting surface by pre-designed pretreatment of the liquid with UV light is provided. The method may include flowing liquid through a conduit having ultraviolet-transparent walls; exposing the liquid within the conduit to ultraviolet (UV) light rays from a polychromatic light source that emits in the spectral band of 200 nm to 300 nm and produces effective UV-Dose of above 40 mJ/cm | 07-15-2010 |
| 20100187174 | METHOD OF FRACTIONATING OXIDIC NANOPARTICLES BY CROSSFLOW MEMBRANE FILTRATION - A method of fractionating a dispersion of oxidic nanoparticles wherein at least one step of the method is a membrane crossflow filtration step, the flow of the dispersion over the membrane being brought about by means of driven rotating parts; and dispersions of oxidic nanoparticles that are obtainable by the method. | 07-29-2010 |
| 20100193435 | Method for the Filtration of a Fluid - A method for the filtration of a fluid applying a certain preferred setting of one or more process parameters (e.g. a minimal concentration of coagulants) while maintaining desirable process performance by regulating the initial filtration resistance. This is achieved by a feedback controller. Applying the invention on in-line coagulation during membrane filtration has shown, that the initial resistance of the last filtration before the chemical cleaning phase can be controlled within an accuracy of approximately 3% (of the total resistance) or 9% (of the fouling resistance). Compared to current dosing strategy, a significant reduction in coagulant consumption can be achieved. | 08-05-2010 |
| 20100193436 | Pre-treatment reverse osmosis water recovery method for brine retentate metals removal - A pre-treatment method for cleaning and maintaining reverse osmosis membrane filters by injecting sulfurous acid into waters with suspended solids in a liquid fraction to be filtered to form sulfurous acid (H | 08-05-2010 |
| 20100200503 | CLEANING METHOD FOR SIMPLE FILTRATION SYSTEMS - A method of cleaning a permeable, hollow membrane ( | 08-12-2010 |
| 20100200504 | METHOD AND DEVICE FOR THE PURIFICATION OF AN AQUEOUS FLUID - A method and device for the cleaning of spiral wound membranes. In the device two or more spiral wound membranes are included in series in pressure tubes. The membranes are cleaned by longitudinal rinsing with water, in which a well-dissolvable gas has been dissolved. In the device for the purification of an aqueous fluid with spiral wound membranes, the membranes can be longitudinal rinsed with water, in which a well-dissolvable gas has been dissolved. As gas that is well-dissolvable preferably CO | 08-12-2010 |
| 20100200505 | MEMBRANE FILTER FOR WATER TREATMENT - The invention relates to a membrane filter for water treatment, comprising a head piece including a permeate collecting chamber with a permeate outlet, and at least one fiber bundle made from capillary membranes, which are secured into the head piece with an end that is open towards the permeate collecting chamber and sealed on the opposite end thereof. The head piece contains an air duct to which the mouth piece that protrudes into the fiber bundle is connected with at least one air outlet. At its other end, the fiber bundle terminates in freely movable manner in the untreated water. | 08-12-2010 |
| 20100213124 | SUBMERGED MEMBRANE SEPARATION APPARATUS AND METHOD FOR OPERATION THEREOF - A submerged membrane separation apparatus is provided that includes a separation membrane module and fine bubble diffusing tubes placed vertically below the module that can evenly and uniformly produce fine bubbles from vertically below the separation membrane module, even when the separation membrane module is large. The apparatus includes: a plurality of fine bubble diffusing tubes placed vertically below the separation membrane module; and a plurality of gas supply pipes for supplying gas to the fine bubble diffusing tubes, wherein the plurality of gas supply pipes are opposed to each other so that a region vertically below the separation membrane module is held between them, the plurality of fine bubble diffusing tubes are connected to the gas supply pipes and extend in a direction intersecting with the membrane surface of the separation membrane element, and the fine bubble diffusing tubes opposed to one another have front ends placed adjacent to one another or have front end portions overlapping one another. | 08-26-2010 |
| 20100224558 | Water Filtration System - A water filtration system includes a raw water line, a purified water line, and a plurality of water filtration units. The filtration units are connected in parallel between the raw water line and the purified water line. Each of the filtration units has a water filter disposed between and separating a raw water side of the unit connected to the raw water line and a purified water side of the unit connected to the purified water line. The raw water side of each unit has a drain opening. The system furthers includes a plurality of raw water valves each disposed between the raw water line and the raw water side of one of the plurality of units, a plurality of purified water valves each disposed between the purified water line and the purified water side of one of the plurality of units, and a plurality of drain valves each disposed to control flow through the drain opening of one of the plurality of units. | 09-09-2010 |
| 20100237011 | BLOOD TREATMENT SYSTEMS AND RELATED METHODS - This disclosure relates to blood treatment systems and related methods. The systems can include a blood pump arranged to move blood through a blood filter, a pressure sensor arranged to measure pressure of blood flowing through a fluid line between the blood pump and the blood filter, and a controller configured to activate a rinse pump to move rinse fluid through the blood filter based at least in part on the pressure of blood flowing through the fluid line as measured by the pressure sensor. | 09-23-2010 |
| 20100237012 | METHOD FOR CLEANING FILTER MEMBRANES - A method for cleaning process apparatus used for production of liquids, especially for cleaning filters, for example membrane filters. The apparatus is contacted with a solution of periodate. It is especially preferred that the cleaning process is carried out at a temperature between 15 and 95° C. | 09-23-2010 |
| 20100258502 | Advanced Oxidation Enhancements and High Temperature treatment of Contaminated Media - Disclosed herein are decontamination techniques that use a chemical that acts as an oxygen source and adsorption/binding agent in a UV reactor to bring together organic contaminant molecules and TiO | 10-14-2010 |
| 20100270236 | DEEP WATER DESALINATION SYSTEM AND METHOD - A cost effective continuous deep water desalination method and system that can use reverse osmosis, and use the difference in the relative density of fresh and salt water to raise desalinized water through a header into an inshore gathering line. The desalinized water can flow to shore via a gravity-driven elevation change. Inertial energy from the gravity drop can be captured prior to deposit to an aquifer or pumping to the land surface. This energy can be used to help drive the system. Wind, solar, and wave energy can also be captured to provide mechanical or electrical power to assist in driving the system. Back flushing the system can be performed through forcing the fresh water or air back through the system and thus force buildup off the membrane. | 10-28-2010 |
| 20100276365 | System and method for removing organic contaminants from water - A method and system for removing organic contaminants from water by use of a panel of hydrophobic polymer membranes which resist degradation when exposed to aggressive oxidizing solutions and that can be used to decompose the organic contaminants while fostering selective-permeation by the organic contaminants are disclosed. | 11-04-2010 |
| 20100282675 | SYSTEM AND METHOD FOR REVERSIBLE CATION-EXCHANGE DESALINATION - Desalination is accomplished by subjecting feed saline water to a cation exchanger in magnesium form where sodium and scale-forming cations are at least partially exchanged for non-scale-forming magnesium ions. This ion exchange also reduces the osmotic pressure of the solution. When the resultant solution is subjected to a pressure-driven membrane desalination process, scaling is reduced and desalinated water is efficiently produced at a lower pressure. After desalination, the concentrated waste water, which contains higher concentrations of ions such as magnesium and sodium, is used to regenerate the depleted cation exchanger back into magnesium form. This regeneration permits the process to be self-sustainable. | 11-11-2010 |
| 20100282676 | DESALINATION SYSTEM AND ELEMENTS THEREOF - According to one aspect of the present invention, there is provided a desalination system comprising a plurality of elongated pressure vessels (PV). Each PV has a longitudinal axis, oriented such that the longitudinal axis thereof is of a vertical orientation. Each of the PVs is adapted to receive therein a plurality n of desalination membranes. The membranes located above the lowermost membrane within the PV have a total weight allowing them to function as a mechanism limiting axial expansion of the lowermost membrane, whereby the PV is free of any additional limiting mechanism. | 11-11-2010 |
| 20100300968 | MEMBRANE CLEANING WITH PULSED GAS SLUGS - Aspects and embodiments of the present application are direction to systems and methods for treating fluids and to systems and methods for cleaning membrane modules used in the treatment of fluids. Disclosed herein is a membrane filtration system and a method of operating same. The membrane filtration system comprises a plurality of membrane modules positioned in a feed tank, at least one of the membrane modules having a gas slug generator positioned below a lower header thereof, the gas slug generator configured and arranged to deliver a gas slug along surfaces of membranes within the at least one of the membrane modules and a global aeration system configured to operate independently from an aeration system providing a gas to the gas slug generator, the global aeration system configured and arranged to induce a global circulatory flow of fluid throughout the feed tank. | 12-02-2010 |
| 20100314316 | HALOGENATED AMIDES AS BIOCIDES FOR TREATING WATER SYSTEMS CONTAINING REDUCING AGENTS - Methods are provided for controlling microorganisms in water systems that contain reducing agent(s). The methods comprise treating the water system with an effective amount of a compound of the formula I: | 12-16-2010 |
| 20110006003 | CYCLIC AERATION SYSTEM FOR SUBMERGED MEMBRANE MODULES - An aeration system for a submerged membrane module has a set of aerators connected to an air blower, valves and a controller adapted to alternately provide a higher rate or air flow and a lower rate of air flow in repeated cycles. In an embodiment, the air blower, valves and controller, simultaneously provide the alternating air flow to two or more sets of aerators such that the total air flow is constant, allowing the blower to be operated at a constant speed. In another embodiment, the repeated cycles are of short duration. Transient flow conditions result in the tank water which helps avoid dead spaces and assists in agitating the membranes. | 01-13-2011 |
| 20110042311 | MEMBRANE SYSTEM - According to the present invention there is provided a method and apparatus for treating a contaminated liquid, the method comprising feeding said liquid to a treatment tank containing a treatment medium in the form of a filtration membrane or a reactive surface, applying a siphon to said treatment tank to draw said liquid through said treatment medium, and discharging the resultant treated liquid from the treatment tank, wherein said siphon is actuated upon said treatment tank reaching a predetermined head pressure or level. The invention also provides a treated liquid when so treated by the inventive method or apparatus. | 02-24-2011 |
| 20110042312 | PROCESS CONTROL FOR AN IMMERSED MEMBRANE SYSTEM - An immersed membrane system or process may use measured or calculated process information to optimize one or more process operating parameters to improve performance or reduce operating costs. An on-line process control system or method may use the resistance in series method in operating an immersed membrane water treatment system. A process control system or process may consider resistance values and adjust operational parameters such as membrane aeration frequency factor, membrane aeration flow, permeate flux, permeation duration, backwash flow and duration, relaxation duration or maintenance or recovery chemical cleaning frequencies in order to reduce the operational costs related to membrane fouling removal. | 02-24-2011 |
| 20110049047 | GAS SPARGER FOR AN IMMERSED MEMBRANE - A gas sparger produces an intermittent flow of bubbles even if provided with a continuous gas flow. The sparger has a housing to collect a pocket of gas and a conduit to release some of the gas from the pocket when the pocket reaches a sufficient size. Optionally, a cover over an outlet from the conduit may break up or distribute the released gas. A large sparger for use with a commercial membrane module can comprise a plurality of smaller units. | 03-03-2011 |
| 20110049048 | WATER PURIFICATION SYSTEM - The present invention concerns a water purification system comprising an ultrafiltration unit, a reverse osmosis unit, and a tank. The ultrafiltration unit is upstream of the tank on an operation conduit and the tank is upstream of the reverse osmosis unit on a reverse osmosis conduit. A backwash conduit is situation between said tank and said ultrafiltration unit. | 03-03-2011 |
| 20110049049 | WATER PURIFICATION SYSTEM SKID - The present invention concerns a water purification system comprising a tank section and a membranes section, wherein the tank section can be positioned with respect to the membranes section to accommodate the specific requirements of the location housing the water purification system. | 03-03-2011 |
| 20110062081 | Process for Treating Waste From a Membrane Filtration Plant - The subject of the invention is a water treatment process, comprising a first pretreatment step that produces pretreated water and sludge, said pretreated water then undergoing at least one membrane filtration step that produces waste and a permeate, said permeate being conveyed to a potabilization system characterized in that said first pretreatment step comprises a first coagulation/flocculation step, and in that said waste resulting from said membrane filtration step undergoes a treatment phase that includes at least one second coagulation/flocculation step followed by a settling step that produces sludge, said settling step being preceded by at least one step of adsorption onto at least one portion of said sludge resulting from the pretreatment and/or onto a portion of said sludge originating from said settling step, said adsorption step targeting a reduction of the phosphonates contained in said waste resulting from said membrane filtration step, said process resulting in treated waste and in excess sludge. | 03-17-2011 |
| 20110094962 | REGENERATABLE FILTER FOR EXTRACORPORAL TREATMENT OF LIQUIDS CONTAINING PARTICLES AND USE THEREOF - The invention relates to a regeneratable filtering and adsorbing system, combining the properties of membrane filtration with those of particle-based adsorption in a closed housing. | 04-28-2011 |
| 20110094963 | MEMBRANE SEPARATION METHOD AND MEMBRANE SEPARATION DEVICE - To provide a membrane separation method capable of attaining reduced adsorption of a membrane-fouling substance contained in treatment water onto the surface of a separation membrane during membrane separation of the treatment water, to thereby lead retarded deterioration in membrane separation performance, and a membrane separation apparatus for performing the method. In the membrane separation method, to treatment water, a particulate cationic polymer which swells in water but does not substantially dissolve therein is added, and the treatment water is subjected to membrane separation. | 04-28-2011 |
| 20110094964 | MEMBRANE FILTER FOR WATER TREATMENT - The invention relates to a membrane filter for water treatment, comprising a head piece including a permeate collecting chamber with a permeate outlet, and at least one fiber bundle made from capillary membranes, which are secured into the head piece with an end that is open towards the permeate collecting chamber and sealed on the opposite end thereof. The head piece contains an air duct to which the mouth piece that protrudes into the fiber bundle is connected with at least one air outlet. At its other end, the fiber bundle terminates in freely movable manner in the untreated water. | 04-28-2011 |
| 20110100909 | METHOD AND APPARATUS FOR LIMITING DIAFILTRATE WASTE - The present invention describes a process and a device for saving diafiltrate by partial regeneration using adsorbers. An object of the invention is to decrease the requirement of dialysate and/or substituate in the depletion of a substance of class X by means of special microstructured adsorption/filtration devices. An object of the invention is also to enable control of the concentration of a substance group X by hemodialysis and/or hemofiltration, such that by partial recirculation of the diafiltrate in the regeneration circuit, the net throughput of diafiltrate can be kept lower. The process serves for saving dialysate and/or substituate solution in control of the concentration of a substance group X in a complex biological liquid compartment, wherein the net throughput of dialysate and/or substituate is minimized by some of the diafiltrate being regenerated by an internal regeneration cycle (RKL) which is able to deplete substrates or products (substance group Y) of the substance group X in the biological liquid compartment. | 05-05-2011 |
| 20110100910 | CERAMIC DEAD-END FILTER, A FILTER SYSTEM, A METHOD OF FILTERING AND A METHOD OF PRODUCING A CERAMIC DEAD-END FILTER - The invention relates to a ceramic dead-end filter for filtration of liquid. The ceramic dead-end filter comprises at least one ceramic filter membrane having a first side with a front surface and a second side. The ceramic membrane comprises a selective front layer providing said front surface and the selective front layer comprises a maximum pore size diameter of about μm or smaller, for example between about 0.5 nm and about 25 μm. The ceramic dead-end filter of the invention provides an effective filtration with a high flux and a long durability. The filter can furthermore be regenerated in a simple way. The invention also relates to filtration system comprising such ceramic dead-end filter, a method of performing the filtration process as well as a method of producing the filter. | 05-05-2011 |
| 20110139715 | Membrane System Backwash Energy Efficiency - A method of backwashing a membrane filtration system comprising at least one permeable membrane, preferably a hollow fibre membrane, the method comprising the step of applying a pressurised gas at a variable pressure to permeate remaining present in the system when filtration process is stopped or suspended to provide liquid for backwashing pores of the permeable membrane during a backwashing process. Also provided are methods of filtering solids from a liquid suspension using alternating liquid backwash pressures. | 06-16-2011 |
| 20110163029 | METHOD FOR SUBSTANCE SEPARATION USING A CELLULOSE HYDRATE MEMBRANE IN SIZE EXCLUSION CHROMATOGRAPHY - There is proposed a separation method for mixtures of materials, using a cellulose hydrate membrane having a porous double structure which consists of micropores having a diameter in the range from >100 nm to 20 μm and ultrapores which have a diameter of <100 nm and which are not accessible to Blue Dextran having an average molecular weight Mw of 2 000 000, wherein the fraction of the volume of the ultrapores is more than 15% of the entire pore volume accessible to water, and wherein, in a preferred embodiment, sulfonic acid ligands are bonded to the membrane. | 07-07-2011 |
| 20110186512 | PROCESS FOR DISINFECTING A FILTRATION WORKS FOR PRETREATMENT OF SALTWATER, AND INSTALLATION FOR THE IMPLEMENTATION THEREOF - Method for disinfecting a filtration works (F) for the pretreatment of salt water, particularly seawater, upstream of a water desalination unit ( | 08-04-2011 |
| 20110186513 | WATER TREATMENT SYSTEMS AND METHODS - Water treatment systems and methods are provided to minimize membrane fouling and the required maintenance that results therefrom. A water treatment system includes a pressure vessel with a plurality of spaced-apart membranes disposed therein, and an impeller or other means for circulating feed water through the interior of the vessel and past the membranes. Antifouling particles (such as diatomaceous earth or activated carbon) and/or pellets can be added to the feed water inhibit membrane fouling and extend the useful life of the membranes. | 08-04-2011 |
| 20110210068 | Water Dispensing Methods and Systems - A method includes performing at least two of the following three treatments to produce at least two types of treated water: reverse osmosis, alkalinization, and carbon filtration. The types of treated water are individually dispensed at different times from a common spout. A method includes individually cooling the types of treated water at different times in a common cold tank prior to dispensing. The common cold tank is purged prior to cooling a different type of treated water. A method includes treating water by electrolysis to produce alkaline water and acidic water and producing at least one additional type of treated water by reverse osmosis or carbon filtration. Consumer containers are rinsed with the acidic water. A system includes: a dispensing unit, a treatment unit remotely located from the dispensing unit, treated water supply lines connecting the treatment unit to the dispensing unit, and a process control unit. | 09-01-2011 |
| 20110220571 | METHOD OF MAKING AND USING ADSORBENT TO REMOVE HEAVY METAL FROM WASTE WATER - The present disclosure describes using the naturally present dissolved chemicals as precipitants from local water sources to form an adsorbent. The adsorbent may be collected and used at the right pH and temperature to purify and remove heavy metals from waste water. Once the heavy metals are removed the concentration of the heavy metals are estimated in the reusable water. The local authority acceptable level heavy metal containing reusable water is reclaimed for non-human consumption. This disclosure enables to conserve water and provide a cheap and an effective method to decontaminate industrial waste water. | 09-15-2011 |
| 20110220572 | FILTERING SYSTEM AND METHOD - Disclosed is a filtering system and method which facilitates to maximize cleaning efficiency, minimize heat energy consumption for cleaning, and shorten cleaning time by a concentrated heating only in a filtering membrane for a maintenance cleaning or recovery cleaning, wherein the filtering system comprises a membrane module including a filtering membrane; an air supplying means for cleaning the filtering membrane; and a heater for heating air supplied from the air supplying means. | 09-15-2011 |
| 20110240554 | MULTI-STAGE SEAWATER DESALINATION APPARATUS AND OPERATION CONTROL METHOD OF MULTI-STAGE SEAWATER DESALINATION APPARATUS - Included is a high-pressure pump P | 10-06-2011 |
| 20110253627 | SYSTEM AND METHOD FOR FILTERING - A system and method for filtering is disclosed, which is capable of accomplishing a filtering operation at a high recovery rate of 96% or more, and realizing a compact and simplified system structure, the system comprising a water bath including an inlet and a discharging hole, wherein feed water to be treated is supplied to the inside of the water bath through the inlet, and concentrated water is discharged out through the discharging hole; and plural membrane cassettes including first and second membrane cassettes submerged into the feed water contained in the water bath, wherein the first membrane cassette is positioned nearest to the inlet, and the second membrane cassette is positioned nearest to the discharging hole, wherein the first membrane cassette treats the feed water with a first impurity concentration; the second membrane cassette treats the feed water with a second impurity concentration; and the first impurity concentration is smaller than the second impurity concentration. | 10-20-2011 |
| 20110259823 | Water filtration system - A water or liquid substance filtration device is disclosed which removes microorganisms and organic contamination and sterilizes the containers and water lines after the unit. The unit is portable, or can be mounted stationary. The unit has a five-stage filtration and sterilization system controlled by an independent onboard computer system that can link to a central computer system to keep track of all independent units. The unit will physically filter out of the water contaminants that can be reused, destroyed, or flushed down a safe drain. It can also be modified to filter for a certain size of particulate, making recovery of certain substances possible. The unit has a self-diagnostic system that can determine if the unit is operating properly and can shut down a part thereof if one of the capillary units fails. The system is hydrophilic, can run at low pressures and can be designed from low to extremely high volumes. The unit uses ozone to disinfect containers and water lines. | 10-27-2011 |
| 20110266216 | METHOD FOR SANITIZING AN ELECTRODEIONIZATION DEVICE - The present invention has the technical effect of disinfecting an EDI device of a water purification system. The present invention may be applied to an EDI device having an internal chamber comprising ion exchange components. The internal chamber may also comprise a plurality of ion selective membranes positioned between the anode and the cathode compartments. As illustrated and described herein, embodiments of the present invention seek to sanitize the EDI device without sanitization chemicals or a water supply. | 11-03-2011 |
| 20110266217 | METHOD FOR CLEANING FILTER SEPARATION SYSTEMS - High shear separations of suspensions and colloid suspensions may be preformed using a fouling reduction agent to optimize the separations. The fouling reduction agents are solids. Exemplary of such solids are powdered cellulose, clays, diatomaceous earth and the like. Process streams which may treated include refinery process waste water, chemical process waste water, food processing waste water, power generation waste water, chemical product streams, and chemical intermediate streams. | 11-03-2011 |
| 20110266218 | DETERMINING BIOFILM THICKNESS IN A MEMBRANE SUPPORTED BIOFILM REACTOR - A method of assessing biofilm thickness in a membrane supported biofilm reactor (MSBR) of the type comprising a lumen containing a gas phase, a liquid phase, and a gas permeable membrane providing an interface between the gas and liquid phases, the method comprising the steps of charging the lumen with an inert gas, closing the lumen to establish an initial elevated pressure in the lumen, measuring the rate of change of pressure within the lumen, and correlating the rate of change of pressure (dP/dt) with biofilm thickness. The step of correlating dP/dt with biofilm thickness involves correlating dP/dt with the rate of diffusion of the inert gas (dn/dt), correlating dn/dt with an overall mass transfer coefficient (K), correlating K with the mass transfer coefficient of the biofilm (ICB), and correlating kβ with the biofilm thickness. Also described is a membrane supported biofilm reactor (MSBR) of the type comprising a gas permeable membrane providing an interface between a lumen containing a gas phase, and a liquid phase, characterised in that the MSBR comprises means for flushing the lumen with an inert gas, means for closing and re-opening the lumen, and means for detecting intra-membrane pressure within the lumen. The means for detecting intra-membrane pressure is provided by a pressure transducer. | 11-03-2011 |
| 20110278224 | WASTEWATER SEPARATION SYSTEM AND METHOD USING THE SAME - A solid-liquid separation system for chemically-precipitated heavy metal wastewater having a membrane module disposed in a filter zone of a chemical reaction tank, a water outlet pipe of the membrane module, a pressure gauge with electric contact, a suction pump, a water inlet pipe of the suction pump, a backwashing pump, and a backwashing pipe. The membrane module, the water outlet pipe of the membrane module, the pressure gauge with electric contact, the water inlet pipe of the suction pump, and the suction pump are directly connected in sequence to form a membrane module water production system. The water outlet pipe of the membrane module, the pressure gauge with electric contact, the backwashing pipe, and the backwashing pump are directly connected in sequence to form a backwashing system. A method for treating chemically-precipitated heavy metal wastewater using the separation system is also provided. The separation effect is very good. | 11-17-2011 |
| 20110278225 | METHOD FOR PURIFYING WATER BY CYCLIC IONIC EXCHANGE - The present invention provides a method for purifying or softening water comprising: passing a specific volume of feedwater through at least one service column comprising a strong acid cationic exchange resin capable of binding divalent cations that are present in the feedwater, wherein the loading of the divalent cations on the resin is restricted to about 1 to 25% of the available ion exchange sites on the resin, and the total dissolved solids in the feedwater is greater than 100 mg/l; feeding the water exiting the service column to a reverse osmosis membrane or a nanofiltration membrane to produce permeate water stream and a reject water stream; and passing all or some of the volume of the reject stream corresponding the specific volume of feedwater through at least one off-line column capable of binding monovalent cations; wherein the chemical equivalent ratio of monovalent to divalent cations in the water exiting the service column is greater than 20 to 1; wherein no external source of regenerant salt is used. The inventive method allows for multiple softening/regeneration cycles so that steady state hardness leakage is achieved that is lower than obtainable with conventional ion exchange softening systems. | 11-17-2011 |
| 20110290723 | METHOD AND PLANT FOR MANAGING THE CLOGGING OF MEMBRANE MODULES AND FILTRATION MEMBRANES - The invention relates to a method for managing the plugging of membrane modules and of filtration membranes, in particular for nanofiltration, ultrafiltration or reverse osmosis for desalinating water, which comprises carrying out consecutive rinsing operations for controlling clogging, in particular biological clogging: evaluating the thickness of the biofilm; starting a rinsing operation at the latest when the evaluated thickness of the biofilm exceeds a first predetermined setpoint value for the biofilm thickness and stopping the rinsing operation not before the biofilm thickness has become lower than a second predetermined setpoint value lower than the first one for the biofilm thickness. | 12-01-2011 |
| 20110309016 | DESALINATION METHOD AND APPARATUS - A desalination apparatus, and a method of using same, comprising a porous inorganic molecular sieve membrane including a retentate side and a permeate side and a salty water inlet to direct salty water to the retentate side of the porous inorganic membrane wherein water passing through the membrane, from the retentate side to the permeate side, is removed as a vapour from the permeate side of the membrane to maintain the permeate side of the membrane at a low water vapour pressure. The present membranes allow the desalination of water at relatively high flux rates without the need for large applied pressures. | 12-22-2011 |
| 20110315631 | MULTI-USE HIGH WATER RECOVERY PROCESS - Disclosed is a versatile multi-use high water recovery process that integrates the use of water purification membranes including reverse osmosis and nanofiltration with ion exchange water softening resins in a number of configurations that optimize operation and achieve maximum membrane permeate recoveries while eliminating the use of fresh water, sodium chloride and other chemicals needed to regenerate the IX resin. The invention provides process mobility and flexibility that enable selection of optimum process configurations and features to address variability in the Influent Water quality. | 12-29-2011 |
| 20110315632 | MEMBRANE FILTRATION SYSTEM - A membrane system is disclosed. The membrane system may include a treatment process wherein both at least a portion of a permeate output of the membrane system and a concentrate output of the membrane system are recirculated back to an input of the membrane system. The membrane system may include a treatment process wherein a higher level permeate is used to treat the membrane system. The membrane system may include a storage reservoir to store at least a portion of the concentrate output of a purge cycle of the membrane system. | 12-29-2011 |
| 20120000851 | WATER TREATMENT SYSTEMS AND METHODS - Water treatment systems and methods are provided to minimize membrane fouling and the required maintenance that results therefrom. A water treatment system includes a pressure vessel with a plurality of spaced-apart membranes disposed therein, and an impeller or other means for circulating feed water through the interior of the vessel and past the membranes. Antifouling particles (such as diatomaceous earth or activated carbon) and/or pellets can be added to the feed water inhibit membrane fouling and extend the useful life of the membranes. A pressure differential across the membranes can be periodically reduced or eliminated, for example by closing a permeate valve, while the feed water continues to circulate. | 01-05-2012 |
| 20120006747 | Methods of Dynamic Filtration Using Centrifugal Force and Methods of Making a Dynamic Filtration Device - The present invention generally relates to a filtration system having one or more apparatuses for filtering gases, liquids, or fluids (e.g., water) to remove particulate matter, and methods of making and using the apparatus. More particularly, embodiments relate to apparatuses and methods for applying centrifugal force(s) to push a fluid or gas to be filtered through a porous membrane or filter within the apparatus to separate particulate matter therefrom. The present invention takes advantage of the Coriolis effect within a cylindrical filter radiating out from a rotating central body. The filtration apparatus provides an energy efficient system for microfiltration (or other filtration process) to remove contaminants from gases and fluids, such as waste water. | 01-12-2012 |
| 20120031838 | PROCESS FOR PRODUCING RECLAIMED WATER AND SYSTEM FOR PRODUCING RECLAIMED WATER - The process includes operation as follows: putting ozone generated by an ozone generator into raw water, in a normal mode, to subject the raw water to ozone treatment; injecting a flocculant into the raw water before or after the ozone treatment; filtering the raw water by a separation membrane after the ozone treatment and the injection of the flocculant; and intermittently setting cleaning mode to put a larger quantity of cleaning ozone than that in the normal mode into the raw water so as to intermittently increase the concentration of dissolved ozone, thereby cleaning the filtration membrane. | 02-09-2012 |
| 20120074059 | CLEANING METHOD FOR FILTRATION MEMBRANE AND MEMBRANE FILTRATION APPARATUS - There is provided a cleaning method for a hydrophobic filtration membrane used for membrane filtration of water to be treated such as seawater, discharged water and ballast water including a jelly-like suspended substance and clogged with the suspended substance in the water to be treated, the filtration membrane being brought into contact with limonene-containing water, or backwashing of the filtration membrane with a cleaning liquid being done, and then, a flow having air taken therein being applied onto a surface of the filtration membrane or a water stream from an eductor nozzle being sprayed onto the filtration membrane. There is also provided a membrane filtration apparatus capable of efficiently performing the above-mentioned cleaning method. | 03-29-2012 |
| 20120074060 | DEVICE AND METHOD FOR WATER FILTRATION USING RECYCLED MEDICAL FILTERS - A water filtration system uses previously used medical filters, such as dialysis filters, for water purification. After medical use the filters are cleaned and sterilized and mounted singly or in groups so as to receive input water under pressure. The system produces sterile filtered water. | 03-29-2012 |
| 20120091060 | FILTRATION METHOD AND DEVICE - A filtration method for a filtration device, the filtration device including a process tank, at least one feed line feeding a medium to be processed into the process tank, and at least one filtration arrangement arranged in the process tank. The process tank includes at least one drain and is configured such that filtration of the medium is accomplished such that a retentate remains in the process tank until the retentate is released after completion of the filtration. The filtration method includes the steps of: filling the process tank with the medium to be filtered and producing one of a predefined transmembrane pressure and constant permeate flow at the at least one filtration arrangement; and filtering the medium in the process tank via the at least one filtration arrangement until a predefined limit value for a mass fraction of solid material is reached. | 04-19-2012 |
| 20120103898 | Device And Method For Drinking Water Purification - The invention relates to a device ( | 05-03-2012 |
| 20120103899 | MAPLE TREE SAP REVERSE OSMOSIS DEVICE - A maple sap reverse osmosis device has a support rack configured and sized to rest atop a tank. The support rack supporting a reverse osmosis device. The reverse osmosis device has a pump line and a dump line both located within the tub. The pump line being located at an upper region of the tank. A pumping means to pump the maple sap from the pump line. The pumping means pushing maple sap through an osmosis membrane. The dump pipe purging concentrate resulting from sap not passing through the osmosis membrane into the deepest region of the tub. | 05-03-2012 |
| 20120111794 | APPARATUS AND PROCESS FOR PRODUCING ELECTRICITY USING PRESSURE RETARDED OSMOSIS DURING DESALINATION OF SEA WATER - Sea water is not suitable for human consumption. Naturally present dissolved chemicals in sea water make it inconsumable. The precipitants and dissolved chemicals need to be separated from water to make it consumable. A combination of aeration system, filtration system, crystallizer, hydrophobic membrane carrying filter and pressure retarded osmosis system are used in various combination to desalinate the sea water. Pressure retarded osmosis process is also used to produce pressurized diluted brine which is further decompressed to by the turbine and used by the generators to produce electricity. Various heat exchange apparatus are used for energy conservation and efficient processing of water in a feasible way. The disclosure enables to purify water and provide an economical means for producing electricity. | 05-10-2012 |
| 20120125845 | DEVICE AND IMPLEMENTATION FOR SANITIZING A FLUID-DISPENSING APPLIANCE - An appliance such as a water dispenser is described that is configurable between a sanitation configuration and a filtering configuration. In one embodiment, the appliance comprises a fluid treatment assembly with an interface for receiving a treatment media such as a sanitizing media and a filtering media. One or more of the sanitizing media and the filtering media can be disposed in a treatment cartridge, the treatment cartridge being configured to engage the interface and to place in fluid communication the contents of the cartridge and a fluid that flows in the appliance. | 05-24-2012 |
| 20120160769 | WATER TREATMENT USING A BIPOLAR MEMBRANE - A method of water treatment comprising: providing an electrolysis device comprising an electrolysis vessel; providing feed streams to the first salt water chamber of the vessel, second salt water chamber of the vessel, acidic chamber of the vessel, and alkalic chamber of the vessel, the acidic chamber producing an acidic solution and the alkalic chamber producing an alkalic solution; directing at least a portion of the contents of the first and second salt water chambers into a precipitation tank; directing at least a portion of the alkalic solution into the precipitation tank, thereby increasing the pH in the precipitation tank to produce precipitate; and removing the precipitate from the precipitation tank. | 06-28-2012 |
| 20120168374 | CLEANING PROCESS FOR IMMERSION-TYPE SEPARATING MEMBRANE DEVICE, AND CLEANING SYSTEM FOR IMMERSION-TYPE SEPARATING MEMBRANE DEVICE - The invention provides a cleaning system and process for an immersion-type separating membrane device that allows convenient and reliable cleaning of contaminants that have adhered onto membrane surfaces of separating membrane devices. Cleaning is carried out by injecting the chemical solution from the filtered water side of the separating membrane device which is set in a tank, allowing matter that is to be removed, on the membrane surface of the separating membrane device, to be cleaned by a simple procedure without requiring large amounts chemicals. The chemical solution is injected with the values of X (kPa), as the pressure difference between membranes before the start of cleaning during filtration, and Y (kPa), as the initial pressure difference between membranes at the initial injection of the chemical solution during back pressure cleaning, satisfying the relationship −0.375X+30≦Y≦0.5X+80. | 07-05-2012 |
| 20120187043 | IMMERSION MEMBRANE APPARATUS CLEANING PROCESS AND IMMERSION MEMBRANE APPARATUS - During inline cleaning when filtering operation is suspended, a venting step is carried out in which the piping interior of a header piping system is vented above the water surface, and the venting step is followed by a pressurized cleaning step wherein chemical solution is supplied to the header piping system while removing gas from the piping interior, with continued supply of chemical solution to the header piping system even after the piping interior has been sealed and the gas removal has been suspended, for pressurized cleaning of the membrane units. As a result, the supplied chemical solution spreads smoothly throughout the piping interior of the header piping system so that it is equally supplied to each membrane unit or hollow fiber membrane module. | 07-26-2012 |
| 20120187044 | METHODS OF CLEANING MEMBRANE MODULES - A method and apparatus for backwashing a membrane filtration system wherein permeate remaining present in the filtration system wherein permeate remaining present in the filtration system when the filtration process is stopped or suspended is used to provide liquid for backwashing the membrane pores during a backwashing process. | 07-26-2012 |
| 20120205307 | FLUID TREATMENT APPARATUS AND METHOD - A method of treating a fluid comprises producing a permeate fluid ( | 08-16-2012 |
| 20120211418 | Slurry Concentration System and Method - A system and method for concentrating a slurry is disclosed. A preferred embodiment comprises a filter that is used to filter a slurry into a concentrate and a permeate. A portion of the permeate is used in a backflow operation of the filter once a pressure differential of 0.8 bar is obtained from the filter inlet to the permeate outlet of the filter. | 08-23-2012 |
| 20120228219 | SPIRAL WOUND MEMBRANE ELEMENT AND TREATMENT OF SAGD PRODUCED WATER OR OTHER HIGH TEMPERATURE ALKALINE FLUIDS - A spiral wound module is suitable for use with high temperature water that is also very alkaline or has a high pH, for example SAGD produced water. The module uses a polyamide-based membrane with a polysulfone or polyethersulfone backing material. For other components, the module uses primarily one or more of, EPDM; polyamide; polyphenylene oxide; polyphenylene sulfide; polysulfone; polyethersulfone; polysulfonamide; polyvinylidene fluoride; mylar; fiberglass; and, epoxy. Polyester is not used. Polypropylene is not used for the feed spacer. For example, a module may use a PVDF feed spacer, a nylon permeate spacer and a polysulfone center tube. The center tube may be provided with 4 rows of 0.063″ diameter holes and be rolled under high tension. | 09-13-2012 |
| 20120228220 | Molecular Separator - The present invention discloses a method and apparatus for separating particles and dissolved matter from an untreated fluid stream. Specifically, the present invention includes a first pressure source which transports untreated fluid or contaminated aqueous fluid into a separator annulus with a filter element disposed therein. The untreated fluid is placed under appropriate pressure sufficient to produce turbulent flow, increased particle kinetics and/or cavitation allowing the desired fluid to penetrate and pass into and through the filter media. The treated fluid is then transported to a collection tank. The contaminant matter retained by the filter media may be removed by the nearly instantaneous reverse pressurization of the separator annulus by a second pressure source thereby removing the contaminant particles away from contact with the filter media, and which may then be transported to a waste collection tank or a separator for further treatment. | 09-13-2012 |
| 20120228221 | METHOD OF CLEANING FILTRATION MEMBRANE - A method of cleaning a filtration membrane includes an alkaline treatment process for supplying an alkaline agent | 09-13-2012 |
| 20120261339 | RECYCLING METHOD AND DEVICE FOR RECYCLING WASTE WATER CONTAINING SLURRY FROM A SEMI-CONDUCTOR TREATMENT PROCESS, IN PARTICULAR FROM A CHEMICO-MECHANICAL POLISHING PROCESS - A method for recycling waste water containing slurry from a semiconductor treatment process; including: Filtration in which waste water containing the fresh slurry is continuously introduced into a circulation tank, during which time the mixed waste water is continuously extracted from the circulation tank, the extracted waste water is guided through an ultrafilter device and is concentrated by removing the fluid to form concentrated waste water and the concentrated waste water is introduced into the circulation tank and mixed with the contents of the circulation tank; and concentration in which the addition of fresh waste water to the circulation tank is essentially stopped when the mixed waste water is continuously extracted from the circulation tank, said extracted mixed water waster being introduced through the ultrafilter device and is concentrated by removing the fluid to form concentrated waste water and the concentrated waste water is introduced into the circulation tank. | 10-18-2012 |
| 20120273415 | BLOOD FLUID REMOVAL SYSTEM PERFORMANCE MONITORING - Monitoring of the performance of a blood fluid removal medium of a blood fluid removal device includes monitoring of condition, such as fluid flow rate or concentration of blood waste product, downstream of the medium. Upstream monitoring of the condition may also be performed to enhance the ability to determine whether the blood fluid removal medium is performing within predetermined ranges. | 11-01-2012 |
| 20120285885 | MEMBRANE CLEANING WITH PULSED GAS SLUGS - Aspects and embodiments of the present application are direction to systems and methods for treating fluids and to systems and methods for cleaning membrane modules used in the treatment of fluids. Disclosed herein is a membrane filtration system and a method of operating same. The membrane filtration system comprises a plurality of membrane modules positioned in a feed tank, at least one of the membrane modules having a gas slug generator positioned below a lower header thereof, the gas slug generator configured and arranged to deliver a gas slug along surfaces of membranes within the at least one of the membrane modules. The membrane filtration system may further comprise a global aeration system configured to operate independently from an aeration system providing a gas to the gas slug generator. The global aeration system may be configured and arranged to induce a global circulatory flow of fluid throughout the feed tank. | 11-15-2012 |
| 20120285886 | RECIPROCAL ENHANCEMENT OF REVERSE OSMOSIS AND FORWARD OSMOSIS - Periodically operating a forward osmosis (FO) semi-permeable membrane element in reverse osmosis (RO), to yield product extraction on a feed side of the membrane, to flush out a concentration polarization (salt concentration of the feed side and dilution of draw solution on the draw side) across the membrane. Utilizing treated waste water to generate the flushing solution of low osmotic pressure, and gauge pressurizing the flushing solution to the gauge pressure of the draw solution to keep a constant gauge pressure of the solutions. FO process is interrupted every 5-20 minutes for a 10-60 seconds long flushing RO process, thereby increasing the FO throughput five fold and recovering power from the increased throughput, i.e. from the osmotic pressure of the brine. | 11-15-2012 |
| 20120285887 | Purifying device for deeply treating printing and dyeing wastewater, and purifying process therefor - A purifying device and a process for deeply treating printing and dyeing wastewater are provided. The device includes a nanometer catalytic microelectrolysis system, a membrane filtration and separation system and a a membrane washing regeneration system. The method includes the following steps of: drawing the printing and dyeing wastewater by a first water pump ( | 11-15-2012 |
| 20120285888 | METHOD FOR PRODUCING POTABLE WATER AND/OR PURIFYING WATER INCLUDING THE ELIMINATION OF A TARGET COMPOUND AND FILTRATION WITHIN A FILTER DRUM - The invention relates to a method for treating water laden with pollutants for the purpose of making the water drinkable, said method including: an elimination step consisting of contacting said water laden with pollutants, within a stirred contact tank ( | 11-15-2012 |
| 20120298578 | SYSTEMS AND METHODS FOR FILTRATION - Filtration systems ( | 11-29-2012 |
| 20120318736 | SPIRAL-TYPE FILTRATION MODULE, AND LIQUID TREATMENT METHOD AND DEVICE EMPLOYING THE SAME - The present invention provides a spiral-type filtration module including a liquid collection tube, and one or more units each including a first filtration membrane, a permeated-liquid flow-path member, a second filtration membrane, and a raw-liquid flow-path member, which are laminated on each other, wherein the one or more units are wound around the liquid collection tube to form a spiral-type membrane element, and the spiral-type membrane element is housed in a substantially-cylindrical outer container. In the permeated-liquid flow-path member, there are formed partition members for inhibiting a permeated liquid from flowing in a module axial direction. | 12-20-2012 |
| 20120318737 | PROCESSES AND APPARATUS FOR INHIBITING MEMBRANE BIO-FOULING - Certain embodiments are directed to a process and apparatus for cleaning and/or regeneration of permeable or semipermeable membranes comprising modulating pressure of a feed stream feeding the permeable or semipermeable membrane and providing intermittent pressure pulses for cleaning and/or regeneration of the permeable or semipermeable membrane. | 12-20-2012 |
| 20120318738 | Autonomous Filter Element - An autonomous filter device and a method for improving the filter life and performance is disclosed. The filter element is equipped with one or more sensors, adapted to measure one or more characteristics. In response to the measured characteristic, the control logic within the filter element is able to determine an appropriate response. For example, the control logic may determine that a sudden, but temporary, blockage has occurred in the filter membrane. In response, the control logic may initiate a specific response designed to alleviate the blockage. The control logic will then determine the success of the response, based monitoring any change in the fluid characteristics. Based thereon, the control logic may alert the operator that the filter element must be replaced. Alternatively, if the response was successful in correcting the blockage, the control logic need not notify the operator, as the filter element is back to normal operating operation. | 12-20-2012 |
| 20120325742 | Gas Sparger for A Filtering Membrane - A gas sparger for a filtering membrane system produces an intermittent flow of bubbles even if provided with a relatively continuous gas flow. The sparger has a housing to collect a pocket of gas and a conduit to release some of the gas from the pocket when the pocket reaches a sufficient size. Optionally, a cover over an outlet from the conduit may break up or distribute the released gas. A large sparger for can comprise a plurality of smaller units or areas. The supply of gas to the sparger may vary in flow rate over larger periods of time in response to changes in conditions in the membrane system to change the time between consecutive bursts of bubbles. A gas supply pipe may have two or more outlets at different elevations in communication with each of two or more units or areas. The discharge of gas between two or more units or areas may be synchronized. One or more of a set of units or area may receive a supplied gas at a higher flow rate. | 12-27-2012 |
| 20130001162 | Apparatus, System, and Method for Forward Osmosis in Water Reuse - An apparatus, system, and method for desalinating water is presented. The invention relates to recovery of water from impaired water sources by using FO and seawater as draw solution (DS). The seawater becomes diluted over time and can be easily desalinated at very low pressures. Thus, a device consumes less energy when recovering water. The apparatus, system and method comprise an immersed forward osmosis cell. | 01-03-2013 |
| 20130015130 | PULSE AERATION FOR IMMERSED MEMBRANESAANM Breitner; JosephAACI ThornhillAACO CAAAGP Breitner; Joseph Thornhill CA - An assembly of modules on the order of a cassette or larger are aerated simultaneously in a series of air-on or high flow rate periods, each in the range of 0.5 to 20 seconds long, separated by longer air-off or low flow rate periods, each in the range of 5 to 40 seconds long. A plurality of aerators located in association with a plurality of modules are provided with a burst of air simultaneously from a shared air accumulator or pulsator connected to all of the aerators. The air accumulator or pulsator may be fed with a continuous supply of air. The plurality of modules may be connected together in a cassette or rack. The accumulator or pulsator may be located outside of a tank of water containing the membranes. | 01-17-2013 |
| 20130015131 | METHOD FOR WASHING SEPARATION MEMBRANE MODULE AND METHOD FOR GENERATING FRESH WATERAANM Onishi; TakashiAACI Iyo-gunAACO JPAAGP Onishi; Takashi Iyo-gun JPAANM Ikeda; KeiichiAACI Otsu-shiAACO JPAAGP Ikeda; Keiichi Otsu-shi JPAANM Okubo; KenichiAACI Otsu-shiAACO JPAAGP Okubo; Kenichi Otsu-shi JP - The present invention provides a method for washing a separation membrane module after filtering raw water containing particles having a hardness higher than that of a separation membrane. Thus, after completion of filtration, water at the primary side in a separation membrane module is drained to outside the system, backwash waste water in the separation membrane module is then drained while carrying out backwash, and any of the steps of:
| 01-17-2013 |
| 20130037484 | ENZYMATIC TREATMENT OF ALGINATE TO REDUCE MEMBRANE FOULING FOR WATER OR WASTEWATER PURIFICATION - This disclosure examines using alginate lyase to catalytically degrade alginate in order to decrease affinity and fouling potential to membranes of 0.2 and 0.02 μm pore size, respectively within a process line of a filtration system. Enzymatically treated alginate caused less fouling on both ultrafiltration and microfiltration membranes than original alginate. Enzymatically treated alginate is predicted to cause less fouling on both membranes within the pH range of approximately 3.0 to approximately 10.0. Without the presence of calcium cation, alginate lyase reduced the foulant resistance by more than 82% for both membranes. In the presence of 1 mM calcium cation, alginate lyase reduced the foulant resistance by more than 55%. In addition, the foulant structure composed of enzymatically treated alginate was more readily removed by backwashing, suggesting reversible fouling. The advantages of using enzymatic technique to control membrane fouling include high efficiency and no damage to the membrane materials. | 02-14-2013 |
| 20130043187 | HOLLOW FIBER MEMBRANE MODULE FOR USE IN A TUBULAR PRESSURE VESSEL - A hollow fiber membrane element may be used in a pressure vessel similar to those used with spiral wound elements, optionally as a replacement for a spiral wound element. A connecting sleeve is used to connect the insides of adjacent elements to each other or to one or more fittings in communication with the outside of the pressure vessel. The element has hollow fiber membranes suspended between two potting heads spaced apart by a cross flow tube that is open at the outside faces of both potting heads. The potting heads are each adapted to slide into an end of a connecting sleeve. A module has one or more hollow fiber elements located inside of a pressure vessel. At least one port is provided in communication between the outsides of the one or more elements and the outside of the vessel. An aerator may be provided on the bottom of the vessel. In an outside-in flow process, feed water enters through the port and flows to the outside of one or more elements while permeate is removed through a fitting at one or both ends of the module. In an inside-out process, feed water enters through a fitting and permeate is removed through a port. | 02-21-2013 |
| 20130048560 | MEMBRANE FILTER SYSTEM - A guide member for directing gas bubble flow along a membrane surface, the guide member having first and second side edges defining a channel for gas bubbles to flow along, the channel having an open bottom end through which the gas bubbles can enter the channel and an open top end through which the bubbles can exit the channel, and a diverting means adjacent the channel bottom end arranged to direct at least some of the incident gas bubbles in a first direction towards the channel bottom end. A membrane module assembly and a membrane filter system including the guide member. | 02-28-2013 |
| 20130056413 | MEMBRANE TREATMENT OF COOLING TOWER BLOW DOWN WATER - Blow down water from an evaporative cooling system, such as a cooling tower, is treated for re-use as cooling make up water. Water in or entering the cooling system is treated with chemicals, for example corrosion inhibitors, scale inhibitors, or biocides. These chemicals are preferably chosen to be compatible with ultrafiltration (UF) and reverse osmosis (RO) membrane systems. Blow down water is removed from the cooling systems and filtered first through a UF membrane unit. The UF membrane unit removes total suspended solids (TSS), microorganisms and organic contaminants, among other things, from the blow down water. Permeate from the UF membrane unit is then filtered through a reverse osmosis (RO) membrane unit to remove, for example, divalent ions and hardness from the water. The RO membrane unit is preferably operated at a high cross flow velocity to reduce fouling. Permeate from the RO system is returned to the cooling system as make up water. | 03-07-2013 |
| 20130056414 | METHOD AND APPARATUS FOR REDUCING THE TOTAL DISSOLVED SOLIDS OF A SOLUTION - Method and apparatus for reducing the total dissolved solids of a solution. A feed solution is conveyed to at least one first chamber of a unit, and a draw solution is conveyed to at least one second chamber thereof. A semi-permeable member arrangement is disposed between each of the first and second chambers. The draw solution has a greater molar concentration than does the feed solution. Solvent from the feed solution is drawn through the membrane arrangement into the draw solution, reducing the solute concentration of the draw solution and increasing the solid concentration of the feed solution. Paddles provide continuous sweeping of opposite external surfaces of the membranes to at least reduce solute depositions on the surface facing the feed solution chamber, and to remove liquid permeate molecules from that external surface of the membranes that faces a draw solution chamber. | 03-07-2013 |
| 20130056415 | NEGATIVELY CHARGED POROUS MEDIUM FOR REMOVING PROTEIN AGGREGATES - A negatively charged microporous filtration medium having a high charge density comprising a porous substrate and a polymerized cross-linked polymeric coating located on the inner and outer surfaces of the substrate. The coating may be formed from a reactant solution comprising negatively charged cross-linkable polymerizeable acrylamidoalkyl monomers and acrylamido cross-linking agents which are polymerized in situ on the substrate. The negatively charged microporous filtration medium are suitable for use as prefiltration membranes for selectively removing protein aggregates from a protein solution. | 03-07-2013 |
| 20130075331 | METHOD FOR FLUORESCENCE-BASED FOULING FORECASTING AND OPTIMIZATION IN MEMBRANE FILTRATION OPERATIONS - The present invention provides a fluorescence-based modeling method that is capable of capturing the dynamic changes of different membrane foulant fractions that occur in fluid filtration operations. Principal component analysis is utilized to de-convolute spectral information captured within fluorescence EEMs into principal component scores that are related to different known foulant groups. The principal component scores are then used as states within a system of differential equations representing approximate mass balances of the main foulant groups to obtain a dynamic forecasting of membrane fouling. Based on the fouling dynamics forecasted by this modeling method, an optimization strategy can be developed for estimating the optimal membrane back-washing scenario for minimizing energy consumption while maximizing clean fluid production. | 03-28-2013 |
| 20130153495 | SYSTEMS AND METHODS FOR PRIMING SORBENT-BASED HEMODIALYSIS USING DIALYSIS FLUID - A method for priming a hemodialysis treatment includes: providing a sorbent cartridge for cleaning spent dialysate fluid returning from a dialyzer; preparing a batch of dialysate in a quantity commensurate with being recycled through the sorbent cartridge multiple times; priming a dialysate circuit in fluid communication with the dialyzer using the batch of dialysate; and priming a blood circuit in fluid communication with the dialyzer using the batch of dialysate. | 06-20-2013 |
| 20130153496 | MEMBRANE CLEANING WITH PULSED AIRLIFT PUMP - A method of cleaning a membrane surface immersed in a liquid medium with a fluid flow, including the steps of providing a randomly generated intermittent or pulsed fluid flow along the membrane surface to dislodge fouling materials therefrom. A membrane module is also disclosed comprising a plurality of porous membranes ( | 06-20-2013 |
| 20130175217 | PULSE AERATION FOR IMMERSED MEMBRANES - An assembly of immersed filtering membrane modules on the order of a cassette or larger are aerated in a series of air-on or high flow rate periods, each in the range of 0.5 to 20 seconds long, separated by longer air-off or low flow rate periods, each in the range of 5 to 40 seconds long. A manifold is in fluid communication with one or more aerators. The manifold and aerators are located in association with the modules. The assembly of immersed filtering membrane modules are provided with a burst of air from the plurality of aerators. The aerators may be fed with a continuous supply of air. The modules may be connected together in a cassette or rack. Bubbles from the aerators may be redirected or dissipated with a deflector before they contact the modules. | 07-11-2013 |
| 20130186824 | Spiral Cross Flow Membrane Filtration Device And Process - Disclosed is a membrane filtration device and process affording high velocity cross flow membrane purging via cyclonic spiraling flow; hydraulically induced about stacked plate type membrane configurations. No piping, conduits or other flow impediments are enclosed to generate streamline or shadow depositions, and periodic reversals of cyclonic flow for enhanced membrane scouring and flushing may be employed. | 07-25-2013 |
| 20130193072 | WATER SEPARATION METHOD AND APPARATUS - A system for treating fractionated water from an oil and gas well. The system comprising a filter system, a diffusive membrane system, a plurality of membrane sensors, and at least one membrane controller. The filter system is fluidly connected to the diffusive membrane system, wherein the filter system comprises a plurality of straining filter banks. The diffusive membrane system comprises a plurality of membrane banks each having an inlet and an outlet. The plurality of membrane sensors are positioned at the outlet of each of the plurality of membrane banks, and the plurality of membrane sensors are configured to detect the total dissolved solids level at the outlet of each of the plurality of membrane banks. The at least one membrane controller is programmed to selectively disengage and isolate at least one of the plurality of membrane banks from fluid communication with the system upon detection if the total dissolved solids level at the outlet of one or more of the membrane banks is above about 20,000 ppm. A method is also provided. | 08-01-2013 |
| 20130213885 | FORWARD OSMOSIS SYSTEM AND PROCESS - A forward osmosis fluid purification system includes a cross-flow membrane module with a membrane, a channel on each side of the membrane which allows a feed solution and a draw solution to flow through separately, a feed side, a draw side including a draw solute, where the draw solute includes an aryl sulfonate salt. The system can be used in a process to extract water from impure water, such as wastewater or seawater. The purified water can be applied to arid land. | 08-22-2013 |
| 20130213886 | SYSTEM AND METHOD FOR FILTRATION - Disclosed are system and method for filtration which can minimize the contamination of the filtering membrane through a pretreatment and perform the pretreatment and the filtration with a filtering membrane in a single filtering unit so that any need for separate and additional space and facility for the pretreatment can be obviated. The system for filtration of the present invention comprises a fine bubble supplier for providing fine bubbles into the feed water. The pretreatment is performed by supplying the feed water to be treated into the filtering unit through a dynamic filtration layer which is formed in the filtering unit as the fine bubbles rise. | 08-22-2013 |
| 20130213887 | HOLLOW FIBER MEMBRANE FILTRATION DEVICE AND METHOD FOR WASHING HOLLOW FIBER MEMBRANE MODULE - The present invention provides a hollow fiber membrane filtration device including a hollow fiber membrane module in which a hollow fiber membrane bundle formed of a plurality of hollow fiber membranes is inserted into a cylindrical case having a plurality of side nozzles at a side surface of the cylindrical case, provided with a water feed/drainage function, an upper-end nozzle on an upper-end face of the cylindrical case, provided with a water feed/drainage function and a lower-end nozzle on a lower-end face of the cylindrical case, provided with a water feed/drainage function, and at least one-sided end of the hollow fiber membrane bundle is fixed to the cylindrical case by bonding with resin in a position higher than any of positions of the plurality of side nozzles, in which at least two of the plurality of side nozzles are communicated with each other through a piping. | 08-22-2013 |
| 20130220923 | NON-BLOCKING FILTRATION SYSTEM - A non-blocking filtration system wherein the suspension filtered continuously scrubs the filter, keeping it free of deposits of solid deposits while the filtrate is removed in a variety of biological and chemical applications, substantially reducing the cost of unit operations. | 08-29-2013 |
| 20130220924 | FRESH WATER GENERATION METHOD AND FRESH WATER GENERATION DEVICE - In order to prevent oxidation degradation of a semipermeable membrane and biofouling growth and avoid an increase in cost due to chemicals and the like, the present invention provides a fresh water production method including membrane-filtering raw water with a microfiltration/ultrafiltration membrane module, followed by performing membrane filtration with a semipermeable membrane unit, in which the membrane filtration in the microfiltration/ultrafiltration membrane module is temporarily interrupted, chlorine agent-containing water is fed from a secondary side of the microfiltration/ultrafiltration membrane module to perform back-pressure washing of the microfiltration/ultrafiltration membrane module, thereafter, an ammoniacal compound and/or an amino group-containing compound are added to a primary side of the microfiltration/ultrafiltration membrane module, and the membrane filtration in the microfiltration/ultrafiltration membrane module is resumed. | 08-29-2013 |
| 20130228514 | FILTRATION METHOD FOR OPERATING A FILTRATION MODULE WITH GAS FEED AT ITS PERMEATE SIDE TO PREVENT BACKFLOW OF PERMEATE - A method for operation of a filtration module | 09-05-2013 |
| 20130240440 | MEMBRANE SENSOR AND METHOD OF DETECTING FOULING IN A FLUID - A membrane sensor for detecting fouling, the membrane sensor comprising a first chamber having an inlet and an outlet; a second chamber having an outlet; only one membrane, the membrane being disposed between the first chamber and the second chamber for allowing fluid to permeate the membrane from the first chamber to the second chamber; a first pressure transducer configured for obtaining a first pressure upstream of the membrane; a second pressure transducer configured for obtaining a second pressure downstream of the membrane; and a resistance regulator configured for adjusting the second pressure. | 09-19-2013 |
| 20130248444 | METHOD AND A SYSTEM FOR SCALING CONTROL IN MEMBRANE SYSTEM OPERATION - A method is disclosed for scaling control in a membrane system operation. The method can be performed by a model in the control system of a plant. The method can include selecting one or more antiscalants corresponding to one or more components of the scale, based on one or more of feed water condition, membrane material, membrane fouling status and a kinetic study relating to a reaction between the antiscalants and the components of the scale. The composition of one or more selected antiscalants can be estimated based on an overall scaling rate constant. | 09-26-2013 |
| 20130264284 | SYSTEM AND METHOD FOR SEPARATING SOLIDS FROM FLUIDS - A system for separating solids from fluid including a solid-laden fluid including a base fluid, a first separator configured to receive the solid-laden fluid and separate the fluid into a solids portion and an effluent, and a membrane separator configured to receive the effluent and separate the effluent into a permeate and a concentrate is disclosed. A method for separating solids from fluid including obtaining a solid-laden fluid, wherein the solid-laden fluid comprises a base fluid, feeding the solid-laden fluid through a centrifuge, removing at least a portion of high gravity solids from the solid-laden fluids, flowing the solid-laden fluid through a membrane separator, removing at least a portion of low gravity solids from the solid-laden fluid, and collecting a permeate from the membrane separator is also disclosed. | 10-10-2013 |
| 20130264285 | PROCESS AND FACILITY TO TREAT CONTAMINATED PROCESS WATER - Process and facility for treating an aqueous solution containing substantial concentrations of a variety of contaminants, including solids, semi-solids, colloids, complexes, oligomers, polyvalents, organics and monovalents, and which tend to form gels and scale precipitates when their concentration levels are increased during treatment of the aqueous solution, the process comprising the steps of: a) feeding the aqueous solution to an ultrafiltration (UF) plant and recovering therefrom an UF permeate reduced in such suspended solids, semi-solids and colloids; b) feeding the UF permeate obtained from step (a) to a nanofiltration (NF) plant and recovering therefrom an NF permeate reduced in such complexes, oligomers, polyvalents and organics; and feeding the NF permeate obtained from step (b) to a first reverse osmosis (RO) plant and recovering therefrom an RO permeate reduced in such monovalents. The process and facility may be used for treating process water from wet process phosphate acid production. | 10-10-2013 |
| 20130264286 | BIOLOGICAL SAMPLE FILTERING SYSTEM AND METHOD FOR FILTERING BIOLOGICAL SAMPLES - A biological sample filtering system for filtering biological liquid samples includes: a sample-mounting box; a plurality of column units disposed in sample wells in the sample-mounting box; a filtrate-collecting container; a control valve connected to the sample-mounting box and the filtrate-collecting container; and a vacuum pump connected to the filtrate-collecting container for generating a vacuum in the box chamber that permits a liquid in the biological liquid samples to be flushed from the column units into the filtrate-collecting container. | 10-10-2013 |
| 20130270184 | METHOD AND SYSTEM FOR CLEANING MEMBRANE FILTERS - The disclosure relates to a system and method for cleaning filters, such as membrane filters. More particularly, a method and system are disclosed for retaining a plurality of small particulates, preferably in the shape of beads, which contact sludge or other despots on the membrane filters to remove unwanted debris that would otherwise form on the cleaning filters. In various embodiments, the plurality of small particulates are retained in a permeable enclosure formed of wedgewire. | 10-17-2013 |
| 20130277305 | SELECTIVELY PERFORATED GRAPHENE MEMBRANES FOR COMPOUND HARVEST, CAPTURE AND RETENTION - Devices and related methods for arresting and retaining molecules from solution upon the surface of a perforated graphene membrane with plural apertures selected to allow passage of the solutions' solvent while simultaneously arresting desired molecules upon the surface of the membrane. The method continues with arranging the perforated graphene membranes in a sequence of successively smaller plural aperture diameters to arrest and retain successively smaller molecules in series. The dislodging devices include electromagnetic, electromechanical and electrostatic configurations. | 10-24-2013 |
| 20130284669 | NEGATIVELY CHARGED POROUS MEDIUM FOR REMOVING PROTEIN AGGREGATES - A negatively charged microporous filtration medium having a high charge density comprising a porous substrate and a polymerized cross-linked polymeric coating located on the inner and outer surfaces of the substrate. The coating may be formed from a reactant solution comprising negatively charged cross-linkable polymerizeable acrylamidoalkyl monomers and acrylamido cross-linking agents which are polymerized in situ on the substrate. The negatively charged microporous filtration medium are suitable for use as prefiltration membranes for selectively removing protein aggregates from a protein solution. | 10-31-2013 |
| 20130284670 | DEMERCURIZATION OF SOLUTIONS BY ULTRAFILTRATION - The present invention provides a process for removal of mercury from a solution by ultrafiltration with filtration membranes having a pore size of less than or equal to 0.25 μm, for removing mercury from mercury-containing solutions, including alkali metal hydroxide solutions or alkali metal alkoxide solutions. | 10-31-2013 |
| 20130284671 | DEVICE FOR CARRYING OUT A METHOD FOR CONSERVING A BLOOD TREATMENT DEVICE, AND METHOD FOR CONSERVING A BLOOD TREATMENT DEVICE - The present invention relates to extracorporeal blood treatment devices and methods and devices for conserving extracorporeal blood treatment devices. In accordance with the present invention, an antifreeze agent in introduced only into that part of the dialysis liquid system of the blood treatment device that includes the volume lying upstream of a sterile filter with which sterile substituate is recovered from the dialysis liquid. Accordingly, that part of the dialysis liquid system that includes the volume lying downstream of the sterile filter is not filled with an antifreeze agent. The present invention makes it possible, after removal of the sterile filter, to easily and safely separate a substituate segment from the rest of the dialysis liquid system and drain off liquid located in the substituate segment. | 10-31-2013 |
| 20130306559 | CHEMICAL CLEANING METHOD FOR IMMERSED MEMBRANE ELEMENT - The present invention relates to a cleaning method for a submerged membrane element used in a membrane bioreactor treatment in which organic wastewater containing 1 mg/L or more of manganese is subjected a biological treatment in a bioreactor treatment tank and then subjected to solid-liquid separation by a membrane filtration device provided in the bioreactor treatment tank, in which after a first liquid containing an oxidizing agent is injected from a secondary side of the submerged membrane element to a primary side thereof and maintained for a certain period of time, the first liquid containing an oxidizing agent is suction-discharged from the secondary side to the outside of the system, and then a second liquid containing an acid is injected from the secondary side of the submerged membrane element to the primary side thereof and maintained for a certain period of time, followed by conducting suction filtration operation. | 11-21-2013 |
| 20130327711 | METHODS FOR SUSTAINABLE MEMBRANE DISTILLATION CONCENTRATION OF HYPER SALINE STREAMS - A novel method of producing concentrated streams or otherwise useful hypersaline brines from a source of non-potable or otherwise impaired water is provided. The method comprises feeding the source water into the feed side of a membrane distillation unit while simultaneously feeding a distillate stream through the receiving side of the distillation unit. The feed and receiving sides are separated by a hydrophobic, microporous membrane that allows water vapor to flux through the membrane to the receiving side. As the membrane becomes clogged with particulates, the unit can be subjected to stream flow reversal and/or temperature gradient reversal in order to remove those particulates and restore previous vapor flux levels, after which previous operations can be resumed. | 12-12-2013 |
| 20130334136 | CLEANING IN MEMBRANE FILTRATION SYSTEMS - A method of cleaning permeable, hollow membranes in an arrangement of the type wherein a pressure differential is applied across the walls of the permeable, hollow membranes immersed in a liquid suspension, the liquid suspension being applied to the outer surface of the porous hollow membrane to induce and sustain filtration through the membrane walls. The method of cleaning comprises the steps of applying a cleaning solution to one side of the membrane wall; applying a pressure differential across the membrane wall to cause flow of the cleaning solution through the wall from the one side of the membrane wall to the other side of the membrane wall and applying a reverse pressure differential across the membrane wall to cause flow of the cleaning solution through the wall from the other side of the membrane wall back to the one side of the membrane wall. | 12-19-2013 |
| 20130334137 | NON-DISPERSIVE OIL RECOVERY FROM OIL INDUSTRY LIQUID SOURCES - The present invention includes a method and system for separating oil from water and particulate contaminants from a oil/water/solid mixture, comprising: a solid removal system for removing small, medium and large solids from a oil/water/solid mixture to form a oil and water stream and a membrane contactor system for separating the oil from the water in the oil and water stream. | 12-19-2013 |
| 20130341270 | APPARATUS, SYSTEMS, AND METHODS FOR FLUID FILTRATION - The present disclosure relates, according to some embodiments, to apparatus, systems, and methods for reduction and/or removal of one or more contaminants (e.g., heavy metals, chromium, phosphorous, phosphorous compounds, nitrogen, nitrogen compounds) from a feed composition (e.g., a fluid). Apparatus, systems, and methods, in some embodiments, may be operable to decontaminate a fluid with comparatively little or no contaminant containing waste fluid. | 12-26-2013 |
| 20130341271 | Mechanical axial vibration in membrane separation treatment of effluents - Apparatus and methods are disclosed for mechanical axial vibration in membrane separation treatment processes. The apparatus includes a separation membrane element having an axial dimension, a membrane support structure having the element therein, and means for vibrating the membrane element (hydrodynamically or using motors) in the axial dimension. | 12-26-2013 |
| 20140008298 | DEVICES USING MEMBRANE MEDIATED FORWARD OSMOSIS - A forward osmosis device, method of manufacturing the forward osmosis device and method of using a solution produced using the forward osmosis device utilizes a forward osmosis membrane element positioned within a housing of the device between an input chamber and an output chamber to draw liquid from the input chamber to the output chamber via an osmotic process. The forward osmosis membrane element includes a layer of purifying additives on the forward osmosis membrane element to remove contaminants in the liquid as the liquid is to drawn through the forward osmosis membrane element. In an embodiment, the forward osmosis device is a forward osmosis intravenous (IV) bag. | 01-09-2014 |
| 20140014579 | SYSTEMS, METHODS AND APPARATUSES FOR CENTRALIZED FILTRATION OF WATER - A water filtration device comprising a water pump for providing water, a first carbon filter that receives water from the water pump, a first ball valve having a first opening connected to the first carbon filter, a first ultrafiltration membrane that receives water from the first carbon filter after it passes through the first opening, a second ball valve having a second opening and connected downstream from the first ultrafiltration membrane, a second ultrafiltration membrane that receives water from the first carbon filter through the second opening, said second ultrafiltration membrane being positioned downstream said first carbon filter, wherein water can flow simultaneously through the first ultrafiltration membrane and the second ultrafiltration membrane from the first carbon filter, a second carbon filter connected downstream from the first and second ultrafiltration membranes that receives and filters water from the first and second ultrafiltration membranes, resulting in producing purified water. | 01-16-2014 |
| 20140014580 | DIALYSIS DEVICE AND METHOD FOR OPERATING A DIALYSIS DEVICE - A dialysis unit includes both an inlet for guiding dialysis fluid in a direction of flow to a dialyser membrane and an outlet for discharging dialysate from the dialyser membrane. A heat pump configured to exchange thermal energy between a heat reservoir and the dialysis fluid in the inlet is coupled to the inlet. | 01-16-2014 |
| 20140014581 | Systems and Methods for Reducing Fouling in a Filtration System - A filtration system include a vessel and a filter element, a first port through which a feed stream can enter the vessel, a second port through which a reject stream can exit the vessel, and a third port through which a permeate can exit the vessel, and a valve system that can be configured to alternately pass the feed stream into the vessel through the first and second ports. | 01-16-2014 |
| 20140027379 | RO SYSTEM AND METHOD FOR DISINFECTING LINES OF THE RO SYSTEM - A circulation pump and an electrochemical ozone generator are integrated into the permeate return line of an RO system, and the permeate return line is connected in flow direction behind the circulation pump and the ozone generator by a recirculation line to the permeate supply line, which can form a closed circuit where the ozonized permeate circulates until all organic contaminants have been killed or decomposed by the ozone in that part of the line system. Valves are integrated, respectively, into the recirculation line and the permeate return line downstream of the branch of the recirculation line. During normal operation of the RO system, the recirculation line valve is connected for feeding connected dialysis devices while the permeate return line valve is open, so excessive permeate that was not taken by the dialysis devices can flow into the supply tank. Alternatively, the permeate can be discharged into an outlet. | 01-30-2014 |
| 20140048482 | METHOD FOR CLEANING CERAMIC FILTER - There is provided a method for cleaning a ceramic filter which can shorten an operation time required to clean the ceramic filter. The method for cleaning the ceramic filter includes: reducing a pressure of a space on a secondary side of the uncleaned ceramic filter, while supplying a cleaning medium to a space on a primary side of the uncleaned ceramic filter, thereby passing the cleaning medium through the ceramic uncleaned filter, so that the uncleaned ceramic filter is cleaned. | 02-20-2014 |
| 20140048483 | METHOD FOR CLEANING MEMBRANE MODULE - In a method for cleaning a membrane module including at least one of a microfiltration membrane and an ultrafiltration membrane through which raw water is membrane-filtered to obtain membrane filtrate, a chemical diffusion step is provided in which chemical-containing water is fed to a feed side of the membrane module and diffused from the feed side of the membrane module to a filtrated side of the membrane module is performed, and subsequently a backwashing step is provided in which the membrane module is backwashed by allowing the membrane filtrate to flow from the filtrated side to the feed side of the membrane module is performed, in which, in the chemical diffusion step, an execution time of the chemical diffusion step is controlled based on a concentration of the chemical diffused to the filtrated side of the membrane module. | 02-20-2014 |
| 20140054218 | System to Reduce the Fouling of a Catalytic Seawater Deoxygenation Unit - A system and process for reducing fouling in a catalytic bed-based deoxygenation unit include a filtration system having a plurality of selectively permeable membranes arranged to contact a raw seawater feed and provide a membrane permeate. The membrane permeate is comprised of a portion of the raw seawater feed from which contaminants, such as dissolved inorganic salts and organic constituents, have been removed by passing through the selectively permeable membranes. The system and process also include a catalyst bed-based deoxygenation unit that receives the membrane permeate. The filtration system may be a nanofiltration, microfiltration, ultrafiltration, or reverse osmosis membrane system. | 02-27-2014 |
| 20140054219 | ANOXIC MEMBRANE FILTRATION SYSTEM AND WATER TREATMENT METHOD - A system is provided for treating contaminated water. The system includes a bioreactor having an outlet for treated water and a filter coupled to receive treated water from the outlet of the bioreactor. The filter is configured to operate in an anoxic mode. The filter has: (a) a vessel configured to receive the treated water, (b) a membrane associated with the vessel and positioned to extract permeate from the received water, (c) a fluid outlet positioned to direct fluid toward the membrane to inhibit film build up on the membrane, (d) a fluid recirculator positioned to recirculate fluid between the vessel and the fluid outlet, and (e) an oxidant supply positioned to introduce an oxidant into the vessel, the oxidant supply being adjustable to control the oxidation-reduction potential of the received water in the vessel within a predetermined range. | 02-27-2014 |
| 20140054220 | Devices, systems, and methods for cleaning, disinfecting, rinsing, and priming blood separation devices and associated fluid lines - Systems and methods for providing for the automatic instrument-based rapid reprocessing of an intact extracorporeal circuit for use in hemodialysis. The system includes a manifold with connectors for engaging a dialyzer as well as venous and arterial blood lines. The manifold is adapted to be moved from a dialysis machine to a reuse instrument without removing the dialyzer and associated blood lines. The system allows for reprocessing of the extracorporeal circuit wherein prior to the next treatment, there is no residual chemical disinfectant requiring testing, the extracorporeal circuit is pre-primed, the levels in the bubble traps are set, and all of the required quality assurance tests are performed and recorded. | 02-27-2014 |
| 20140054221 | MEMBRANES WITH POLYDOPAMINE COATINGS - A membrane with rejection properties for mono and divalent-salts, BOD and COD good resistance to cleaning chemicals and maintaining high permeability for water. A polymeric coating prepared from polydopamine or hydroquinone or catechol or mixtures thereof, is deposited. In another embodiment, coating process steps and conditions are taught to achieve thickness control to tune the rejection properties of the membranes. | 02-27-2014 |
| 20140061129 | SYSTEM AND METHOD OF DESALINATION OF WATER - A water desalination system including at least one reverse osmosis desalination unit, including at least one reverse osmosis membrane and having a saline water inlet at a feed side of the at least one reverse osmosis membrane and a permeate outlet at a permeate side of the at least one reverse osmosis membrane, and an intermittent cleaning control subsystem operative to provide intermittent cleaning of the at least one reverse osmosis membrane by at least one of narrowing or closing the permeate outlet, thereby causing an increase of pressure of the permeate at the permeate side of the at least one reverse osmosis and reducing the feed pressure, without significantly increasing the permeate pressure, thereby causing permeate to flow from the permeate side to the feed side of a membrane and flushing foulants to a location outside of the desalination unit. | 03-06-2014 |
| 20140076806 | AERATOR DEVICE, FILTER SYSTEM INCLUDING AN AERATOR DEVICE, AND METHOD OF AERATING A FILTER USING AN AERATOR DEVICE - An aerator device, a filter system including an aerator device, and a method of aerating a filter using an aerator device. An aerator device includes a housing having an interior cavity; a first plate in the interior cavity and defining a first cavity portion and a second cavity portion thereof, the first plate being spaced apart from a top wall of the housing to define a first opening through which the first cavity portion and the second cavity portion are in communication; and a second plate defining a first chamber and a second chamber of the second cavity portion, the first chamber and the second chamber being in communication with each other below a lower end of the second plate, the housing having an inlet opening in communication with the first cavity portion, and an outlet opening through the top wall and in communication with the second chamber. | 03-20-2014 |
| 20140076807 | LOW ENERGY REVERSE OSMOSIS PROCESS - We provide a system and method for reverse osmosis treatment of water, including seawater and brackish water. Methods and systems of embodiments of the invention may include, for example, ultrafiltration followed by biofoulant removal, both of which precede reverse osmosis. In preferred embodiments the system is run at a low flux. For example, a flux of 6-8 GFD may be used with seawater. | 03-20-2014 |
| 20140091037 | POROUS MEMBRANE, PROCESS FOR PRODUCING POROUS MEMBRANE, PROCESS FOR PRODUCING CLARIFIED LIQUID, AND POROUS-MEMBRANE MODULE - A porous membrane with the membrane wall constructed of a hydrophobic polymer and a hydrophilic polymer, wherein when the membrane wall is divided into 3 sections in the film thickness direction to form region “a” containing one wall surface A of the membrane wall, region “c” containing the other wall surface C and region “b” between region “a” and region “c”, the hydrophilic polymer content ratio C | 04-03-2014 |
| 20140091038 | APPARATUS AND METHOD FOR IONIC CONTAMINANT REMOVAL IN LIQUIDS - The present application provides an apparatus for removal of an ionic contaminant from a liquid comprising a branched polymer, a filtration membrane, and a filter casing. The application also provides a method of removing an ionic contaminant from a liquid, the method comprising directing ion-contaminated liquid into and draining treated liquid from an apparatus as described in the instant specification. | 04-03-2014 |
| 20140110337 | SYSTEM AND METHOD OF DESALINATION OF WATER - A water desalination system including at least one reverse osmosis desalination unit, including at least one reverse osmosis membrane and having a saline water inlet at a feed side of the at least one reverse osmosis membrane and a permeate outlet at a permeate side of the at least one reverse osmosis membrane, and an intermittent cleaning control subsystem operative to provide intermittent cleaning of the at least one reverse osmosis membrane by at least one of narrowing or closing the permeate outlet, thereby causing an increase of pressure of the permeate at the permeate side of the at least one reverse osmosis and reducing the feed pressure, without significantly increasing the permeate pressure, thereby causing permeate to flow from the permeate side to the feed side of a membrane and flushing foulants to a location outside of the desalination unit. | 04-24-2014 |
| 20140124441 | WASHING METHOD FOR SEPARATION MEMBRANE MODULE - In a method for cleaning a separation membrane module in which filtration is performed through a separation membrane after mixing and stirring raw water containing particles having hardness higher than that of the separation membrane with an inorganic flocculant, (a) water on a membrane primary side in the separation membrane module is discharged outside the system after completion of the filtration; then (b) the membrane primary side in the separation membrane module is filled with water containing a chelating agent for a certain period of time; subsequently (c) the water containing the chelating agent on the membrane primary side in the separation membrane module is discharged outside the system; and then (d) backwashing discharge water in the separation membrane module is discharged while performing backwashing in which backwashing water is transferred from a membrane secondary side to the membrane primary side of the separation membrane module. | 05-08-2014 |
| 20140131278 | SYSTEMS AND METHODS FOR CONDITIONING A FILTER ASSEMBLY - Systems and methods condition a filter assembly. Purging liquid is passed through the filter assembly to remove contaminants from the pores and voids of the filter medium and from the upstream and downstream sides of the filter medium. | 05-15-2014 |
| 20140131279 | SIMULTANEOUS REMOVAL OF OIL AND GASES FROM LIQUID SOURCES USING A HOLLOW FIBER MEMBRANE - The present invention includes an apparatus and method for removing oil from a oil-containing liquid comprising oil and gas comprising: a source of oil-containing liquid; and a membrane contactor system in fluid communication with the source of oil-containing liquid, the membrane contactor system comprising one or more membrane contactors having a first and a second surface, wherein the first surface coalesces oil and removes gas from the oil-containing liquid, and the oil and gas are collected on the second surface from the oil-containing liquid. | 05-15-2014 |
| 20140144840 | SEQUENCING BATCH TYPE OR BATCH TYPE WATER-FILTERING APPARATUS AND METHOD OF OPERATING THE SAME - Provided are a sequencing batch type or batch type water-filtering apparatus and a method of operating the apparatus. The apparatus includes a raw water inflow pump and a membrane module including tubular type membranes arrayed in series. Accordingly, the apparatus maintains an appropriate cross-flow velocity, and is automatically controlled. | 05-29-2014 |
| 20140151297 | PORTABLE REVERSE OSMOSIS WATER PURIFICATION SYSTEM - In a reverse osmosis fluid purification system, an input fluid is received at an input of the purification system, and a fluid purification run cycle is performed on the input fluid. The fluid purification cycle includes pumping the input fluid through a membrane with a pump at a first pressure and first flow rate to generate product fluid and waste fluid. The product fluid is provided to an external system and the waste fluid is provided to a drain port. The membrane is then rinsed after performing the fluid purification run cycle by providing the input fluid to the pump and pumping the input fluid through the membrane at a second pressure less than the first pressure and a second flow rate greater than the first flow rate for a predetermined period of time. | 06-05-2014 |
| 20140151298 | Method and System for Enhanced Osmotic Mass Transfer - A mass transfer process and device are provided that benefits enhanced mass transfer through a membrane as well as maintenance of membrane cleanliness via membrane surface vibration. Uniform amplitude and frequency vibration of the entire membrane in parallel to mass flux reduces internal and external concentration polarization, thereby improving mass flux, especially osmotic driven flux, through the membrane while affording minimal mechanical stress to the membrane. Vibration is provided by piezoelectric imbued membrane support medium wherein vibration is incited by oscillating electric fields generated by electrodes concomitant with the membrane support medium. | 06-05-2014 |
| 20140151299 | METHOD AND APPARATUS FOR CLEANING A MEMBRANE FILTRATION APPARATUS - A membrane filtration apparatus located in a filtration chamber has a number of membranes and an associated support structure having a plurality of input passages and output passages. Wastewater is delivered to the input passages at one side of the membranes and the output passages receive cleaned water at the other side of the membranes after it has passed through a membrane. Each of the input passages is open at top and bottom to the filtration chamber interior, but substantially closed laterally. In a method and apparatus for cleaning the filtration apparatus, gas bubbles are discharged into the wastewater below a first subset of the input passages to cause airlift induced circulation of the wastewater up through the first subset, the flow being directed across and down through a second subset of the input passages. | 06-05-2014 |
| 20140158616 | SYSTEMS, APPARATUS, AND METHODS FOR SEPARATING SALTS FROM WATER - A system, method, and apparatus for precipitating a water soluble salt or water soluble salts from water, including adding a water-miscible solvent to a water solution including an inorganic salt. The system, method and apparatus also allow for the separation of the precipitated salt, and for separation of the solvent from the water. In doing so, reclamation of water is provided. | 06-12-2014 |
| 20140158617 | FILTER ARRANGEMENT - The present invention relates to a filter arrangement comprising a plurality of elongate hollow filtration elements, each containing a back-washing mechanism. The back-washing mechanisms comprise at least one debris receiving portion having a cross-section corresponding to the cross-section of the hollow filtration element. | 06-12-2014 |
| 20140158618 | MEMBRANE CLEANING WITH PULSED AIRLIFT PUMP - A method of cleaning a membrane surface immersed in a liquid medium with a fluid flow, including the steps of providing a randomly generated intermittent or pulsed fluid flow along the membrane surface to dislodge fouling materials therefrom. A membrane module is also disclosed comprising a plurality of porous membranes ( | 06-12-2014 |
| 20140166576 | SYSTEM FOR AND METHOD OF SEPARATING OIL AND PARTICLES FROM PRODUCED WATER OR FRACTURING WATER - A system of separating oil and water from produced or fracturing water with an intended separation direction, the system includes: a unit for feeding the produced or fracturing water to a solid-fluid separator; a membrane system configured to output clean water; and a decanter configured to output solids, wherein the decanter or the membrane system is coupled to an output of the solid-fluid separator; wherein the membrane system or the decanter is configured to feed remaining fluid from the membrane system or decanter to an oil extractor system configured to output oil; and wherein the oil extractor system comprises a high speed separator configured to output the oil, and has a feedback conduit for feeding a remaining water containing fluid back to the membrane system. | 06-19-2014 |
| 20140166577 | APPARATUS AND METHOD FOR PRODUCING POTABLE WATER - An apparatus according to the present invention includes a pump for pressurizing tap water, a reverse osmosis membrane for separating the pressurized tap water into waste water containing contaminant and filtered water and a tank for storing filtered water. Waste water is disposed through a first flow channel and a second flow channel mounted in parallel. The apparatus according to the present invention further includes a flow rate control unit having a flow rate control valve provided in the first flow channel to control flow rate of waste water flowing through the flow channel, a flow channel open/close valve provided in the second flow channel for opening/closing thereof, and a control device for controlling opening/closing the flow channel open/close valve. | 06-19-2014 |
| 20140183132 | SEPARATION MEMBRANE CLEANING SYSTEM AND SEPARATION MEMBRANE CLEANING METHOD USING THE SAME - A separation membrane cleaning system and a separation membrane cleaning method. A separation membrane cleaning system includes: a membrane filtration bath; a treated water storage bath configured to store treated water produced by the membrane filtration bath and discharge the treated water during reverse cleaning or chemical cleaning; a chemical storage bath configured to supply a chemical; a first pipe fluidically communicated between the membrane filtration bath and the treated water storage bath to transport the treated water produced by the membrane filtration bath to the treated water storage bath, and a fourth pipe fluidically communicated with the first pipe to transport the chemical to the membrane filtration bath; a second pipe to transport the treated water from the treated water storage bath; and a third pipe fluidically communicated with the fourth pipe to transport the chemical from the chemical storage bath. | 07-03-2014 |
| 20140190887 | SYSTEM AND METHOD TO EFFICIENTLY CLEAN A BLOOD FILTER - A method for cleaning a blood filter includes: (i) pumping a physiologically safe fluid back and fourth through the insides and/or the outsides of a plurality of hollow fiber membranes of the blood filter to remove or loosen blood residuals, such as blood clots, proteins and/or biological fluid; (ii) injecting air into the physiologically safe fluid to form an air/fluid mixture; (iii) pumping the air fluid mixture through the insides and/or outsides of the plurality of the hollow fiber membranes of the blood filter to further or remove or loosen blood residuals therefrom; and (iv) removing the air/physiologically safe fluid mixture along with the removed or loosened blood residuals to drain. | 07-10-2014 |
| 20140217020 | MODULAR FLUID THERAPY SYSTEM HAVING JUMPERED FLOW PATHS AND SYSTEMS AND METHODS FOR CLEANING AND DISINFECTION - Systems and methods for cleaning and disinfecting a medical therapy device that delivers any one of hemodialysis, hemodiafiltration and hemofiltration. The system has a base module that has at least one segment of a controlled compliant flow path and at least one pair of jumpered ports configured on the base module. One or more components have connections connectable to the jumpered ports of the base module to provide for fluid communication between the segment of the controlled compliant flow path in the base module and a flow path defined by the one or more components. The base module is connected to the one or more components that define a flow path configurable for carrying out in part at least one function performed during any one of hemodialysis, hemodiafiltration or hemofiltration. | 08-07-2014 |
| 20140217021 | MAPLE TREE SAP REVERSE OSMOSIS DEVICE - A maple sap reverse osmosis device has a support rack configured and sized to rest atop a tank. The support rack supporting a reverse osmosis device. The reverse osmosis device has a pump line and a dump line both located within the tub. The pump line being located at an upper region of the tank. A pumping means to pump the maple sap from the pump line. The pumping means pushing maple sap through an osmosis membrane. The dump pipe purging concentrate resulting from sap not passing through the osmosis membrane into the deepest region of the tub. | 08-07-2014 |
| 20140217022 | NOVEL IN-SITU MEMBRANE CLEANING USING PERIODIC ELECTROLYSIS - A membrane is provided herein having the ability to remove/prevent membrane fouling. This novel membrane consists of a thin electrically conductive layer deposited on the membrane surface. This unique membrane can be used as an electrode in an electrochemical system that consists of the membrane, the salty water as an electrolyte and a counter electrode that can be inserted in the saline feed solution. A periodic electrolysis can be performed. Electrolysis will generate gases (e.g., Cl | 08-07-2014 |
| 20140217023 | FILTERING SYSTEM AND METHOD - Disclosed is a filtering system and method which facilitates to maximize cleaning efficiency, minimize heat energy consumption for cleaning, and shorten cleaning time by a concentrated heating only in a filtering membrane for a maintenance cleaning or recovery cleaning, wherein the filtering system comprises a membrane module including a filtering membrane; an air supplying means for cleaning the filtering membrane; and a heater for heating air supplied from the air supplying means. | 08-07-2014 |
| 20140238936 | REVERSE OSMOSIS AND NANOFILTRATION MEMBRANE CLEANING - A method of cleaning a reverse osmosis or nanofiltration membrane includes supplying pulses of bubbles to the membrane. A venturi device for supplying bubbles to improve the cleaning of reverse osmosis or nanofiltration membranes includes a venturi having a liquid inlet and an air inlet provided at a choke point of the venturi, as well as an outlet. The air inlet is provided with a plurality of tubes. A reverse osmosis plant includes a membrane pressure vessel having a fluid inlet, a permeate outlet, a concentrate outlet and an in place cleaning tank connected in line with the fluid inlet. A venturi valve is connected in-line between the cleaning tank and the fluid inlet. | 08-28-2014 |
| 20140238937 | SYSTEMS AND METHODS FOR IMPROVING FLUX IN OSMOTICALLY DRIVEN MEMBRANE SYSTEMS - The invention relates to improving flux in osmotically driven membrane systems by promoting and controlling the growth of biofilms on a surface of the membrane. | 08-28-2014 |
| 20140251905 | Point of Use Filtration System with Backwash - A system and method for a point of use filtration system with backwash is provided. The system includes a first filtration element, a tank, and a second filtration element positioned downstream from the tank. A first and second valve are each positioned downstream from the first filtration element. A first control line is coupled to a first control switch or a first permeate line and the first valve, and a second control line is coupled to the second control switch or a second permeate line and the second valve. When the point of use demands permeate water, the first and second pressure drops cause the first and second valves to open so water from the tank flows in a reverse direction to backwash the first filtration element and exit through the first and second valves to the drain, while water from the tank simultaneously flows through the second filtration element to the point of use. | 09-11-2014 |
| 20140263053 | Filter System and Method - A system and method for treating a filter is provided. In an embodiment the filter is treated by pre-rinsing the filter membrane with a buffer solvent. The buffer solvent can be used to reduce or eliminate energy differences between the surface of the filter membrane and the process liquid which is being filtered. The pre-rinse may be performed prior to shipment or, alternatively, may be performed after shipment of the filter to a customer. | 09-18-2014 |
| 20140263054 | Water Purification System - Technology is described for a water purification system. The water purification may include a carbon block. The water purification system may include an ion-exchange resin layer to reduce a pH level in water before neutral water passes into a fiber membrane filter. The water purification system may include the fiber membrane filter to receive the water from the carbon block and into a plurality of pores to remove suspended solids from the water. | 09-18-2014 |
| 20140311978 | RECESS PLATE AND METHOD FOR DETECTING MEMBRANE LEAKAGE - The invention relates to a recess plate for a membrane filter device, the filter device having a stack of essentially identical recess plates, the recess plates having recesses, and the recesses forming filter chambers between adjacent recess plates of the stack, into which filter chambers a suspension can be supplied on a cake side of the filter cloth, and the suspension can permeate the filter cloth to a filtrate side thereof, such that a solid content of the suspension deposits on the filter cloth as a filter cake, each filter chamber having a moveable membrane, the membrane and the recess plate enclosing a squeezing chamber, the recess plate having an inlet duct for inserting a pressurizing medium into the squeezing chamber, for mechanical pressing out the respective filter cake. The invention further relates to a method for detecting membrane leakage in such membrane filter device. | 10-23-2014 |
| 20140332467 | METHOD FOR CLEANING A FILTER - A method for cleaning a cross-flow filter ( | 11-13-2014 |
| 20140346110 | SEMIPERMEABLE FILTRATION MEMBRANE WITH INTEGRATED PRODUCING CIRCUIT - The filtration membrane ( | 11-27-2014 |
| 20140360936 | REMOVAL OF DISSOLVED SALTS USING A SOLVENT - The present disclosure is related to a method and apparatus for reducing a salt concentration in a liquid composition using a solvent. The method includes combining the liquid composition and the solvent, where the solvent has lower carrying capacity for at least one salt in solution with the liquid composition. The liquid composition may be miscible with the solvent. The solvent may also have a lower boiling point than the liquid composition. The method further includes precipitating some of the salt out of the liquid and removing the precipitate. The solvent may then be separated, leaving the liquid composition with a reduced salt concentration. The solvent may be reused if recovered after separation. The apparatus includes elements for implementing the method. | 12-11-2014 |
| 20140360937 | REVERSE OSMOSIS TREATMENT DEVICE AND METHOD FOR CLEANING REVERSE OSMOSIS TREATMENT DEVICE - A reverse osmosis treatment device includes: a first pressure vessel for treating an untreated water to produce a primarily treated water and a first permeated water; a second pressure vessel for treating the primarily treated water to produce a secondarily treated water and a second permeated water; a first cleaning solution tank for storing a first cleaning solution for cleaning the first pressure vessel; and a second cleaning solution tank for storing a second cleaning solution for cleaning the second pressure vessel. Each of the first pressure vessel and the second pressure vessel has therein a reverse osmosis membrane element having a reverse osmosis membrane. The first cleaning solution tank is connected to the first concentrate outlet pipe of the first pressure vessel, and the second cleaning solution tank is connected to the inlet pipe for the primarily treated water of the second pressure vessel. | 12-11-2014 |
| 20140367334 | METHOD FOR PREVENTING MICROBIAL GROWTH ON FILTRATION MEMBRANE - The present invention relates to a method for preventing microbial growth on a filtration membrane during desalination process. The method comprises that the membrane is exposed to a low concentration of performic acid by continuously or intermittently introducing performic acid to the membrane surface. When performic acid is added according to the present invention to the water flow, there is no significant reduction in the water flux through the membrane. | 12-18-2014 |
| 20150021266 | OPERATING METHOD FOR MEMBRANE SEPARATION DEVICE AND MEMBRANE SEPARATION DEVICE - A membrane separation device includes a separation membrane immersed in water to be treated and an air diffusion device positioned below the separation membrane, and provides treated water that has permeated through the separation membrane while diffusing air from the air diffusion device towards the separation membrane. A target value setting step sets a target value of an amount of diffusion air diffused from the air diffusion device based on a transmembrane pressure difference, and the air diffusion device is controlled such that the amount of the diffusion air becomes the target value. In the target value setting step, an absolute value of a change or a rate of change in the target value for increasing the amount of the air diffusion is set greater than an absolute value of a change or a rate of change in the target value for decreasing the amount of the air diffusion. | 01-22-2015 |
| 20150027948 | BACKWASHABLE FILTRATION ELEMENT - A planar filtration element includes a planar support structure ( | 01-29-2015 |
| 20150060359 | SPIRAL WOUND MEMBRANE ELEMENT AND METHOD FOR CLEANING SPIRAL WOUND MEMBRANE SHEET - A spiral wound membrane element and a method for cleaning a spiral wound membrane sheet are provided. The spiral wound membrane element comprising a perforated central tube; one or more membrane sleeves, each sleeve comprising two membrane sheets enclosed at two edges around a feed spacer sheet and wrapped around the central tube; a permeate carrier sheet attached to the central tube at a first edge opposite a second edge; and a seal on third and fourth edges of the permeate carrier sheet. The method comprises introducing two solution with different solute concentration to two sides of the spiral wound membrane sheet; establishing a concentration gradient between the first and second sides; communicating a first solvent from the first side to the second side to remove a foulant located on the second side of the membrane sheet and collecting a waste stream that contains the foulant. | 03-05-2015 |
| 20150068978 | ENHANCMENT OF MEMBRANE ROBUSTNESS BY TREATMENT WITH IONIC MATERIALS - The disclosure is directed to an intermediate filtering membrane comprising: a filtering membrane having a charged or polar surface; and a transiently coupled charged compound, wherein the charged compound has an opposite charge to the membrane charge. Likewise, provided herein are methods and kits utilizing the intermediate membrane for various filtering membranes operations. | 03-12-2015 |
| 20150076063 | Method and a Device for Maintaining a Synchronized Local Timer Using a Periodic Signal - A system and method for switching between flows of water solutions passed in groups of blocks of membrane pressure vessels arranged in parallel in a tapered flow system, wherein the system comprises a system inlet feed line, a system outlet flow line, high pressure booster pumps configured to provide a high pressure feed stream to the system; blocks of membrane pressure vessels arrayed in parallel, and a first and second bypass line each parallel to said blocks. | 03-19-2015 |
| 20150090660 | Light-Assisted Membrane Treatment and Cleaning - In one aspect, the invention relates to a filtration apparatus comprising a tubular inorganic porous membrane and a light source disposed within the lumen of the membrane for use in, for example, enhancing oxidation of organic molecules and enhancing foulant removal. In one aspect, the invention relates to a filtration apparatus comprising a tubular porous membrane and a displacement body disposed within the lumen of the membrane. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention. | 04-02-2015 |
| 20150101983 | REAL TIME SELF-STERILIZING COMPOSITE WATER FILTER AND SYSTEM FOR SAME - The present invention discloses a water filter device comprised of a housing, a first cap, a membrane element, a permeate tube, a quartz sleeve and a UV lamp. The permeate tube may be designed with a plurality of uniformly-distributed permeate openings. The membrane element is disposed outside of the permeate tube. The membrane element, the permeate tube, the quartz sleeve and the UV lamp may be disposed in one housing. The quartz sleeve is disposed along the central axis of the permeate tube while the UV lamp is disposed inside or within the quartz sleeve. | 04-16-2015 |
| 20150114905 | METHOD AND A SYSTEM FOR MONITORING AND CONTROL OF FOULING AND OPTIMIZATION THEREOF OF TWO SIDE MEMBRANE FOULING PROCESS - Methods are disclosed for monitoring, controlling and optimizing fouling of a two side membrane fouling process. The method for monitoring fouling of a two side membrane fouling process can include determining the process model for the two side membrane fouling process. The parameters of the process model can be grouped based on the interactions thereof between the parameters so as to form one or more groups of parameters. At least one key performance index is estimated in relation to one or more groups of parameters. The fouling of the two side membrane fouling process is monitored correspondingly in relation to at least one key performance index. | 04-30-2015 |
| 20150129495 | LOW ENERGY REVERSE OSMOSIS PROCESS - We provide a system and method for reverse osmosis treatment of water, including seawater and brackish water. Methods and systems of embodiments of the invention may include, for example, ultrafiltration followed by biofoulant removal, both of which precede reverse osmosis. In preferred embodiments the system is run at a low flux. For example, a flux of 6-8 GFD may be used with seawater. | 05-14-2015 |
| 20150136695 | Systems and Methods For Cleaning A Membrane Separation System - Systems and methods for cleaning a membrane filtration system using cross-flow geometry. | 05-21-2015 |
| 20150144555 | FILTRATION APPARATUS - A filtration apparatus ( | 05-28-2015 |
| 20150290590 | AERATION DEVICE, OPERATION METHOD THEREFOR, AND WATER TREATMENT APPARATUS - The present invention relates to an aeration device provided with: an aeration tube, in the upper part of which multiple aeration holes are formed and which extends in the horizontal direction; and an open-ended tube. One end of the open-ended tube directly or indirectly communicates with an end of the aeration tube and the open end of the open-ended tube opens downward in the vertical direction and satisfies formula (1). The present invention provides: an aeration device, which is capable of uniform aeration, can be placed conveniently, and with which complication of tube placement does not occur easily; an operation method therefor; and a water treatment apparatus provided with the aeration device. | 10-15-2015 |
| 20150306544 | SYSTEM FOR CLEANING MEMBRANE, AND METHOD FOR CLEANING MEMBRANE USING SAME - A system for cleaning a membrane of the present invention includes: a first membrane filtration tank which includes a membrane and an aerator, filters inflow raw water by membrane filtration, and discharges treated water and water to be treated, respectively; a pressure gauge for measuring a transmembrane pressure and a flow meter for measuring a permeation flux which are provided at a treated water discharge line of the first membrane filtration tank; and a controller which calculates a water permeability recovery rate by calculating the water permeability from the differential pressure measured at the pressure gauge and the permeation flux measured at the flow meter, predicts a membrane contamination degree from the calculated water permeability recovery rate, and controls a back-pulsing interval and an intermittent aeration interval. | 10-29-2015 |
| 20150306545 | METHOD FOR IMPROVING REJECTION RATE OF REVERSE OSMOSIS MEMBRANE, REJECTION RATE IMPROVING AGENT, AND REVERSE OSMOSIS MEMBRANE - To provide a method for improving a rejection rate of an RO membrane, which further improves the stability of removal performance (rejection rate) and flux stability (sustainability of contamination resistance). In a method for improving a rejection rate of an RO membrane, including a step of allowing an aqueous solution containing a polyphenol to pass through an RO membrane, the method further includes a step of allowing an aqueous solution containing at least one type selected from the group consisting of a modified poly(vinyl alcohol), a high molecular polysaccharide, and a poly(amino acid) to pass through the RO membrane. The method preferably further includes a step of allowing an aqueous solution containing an organic compound having an amino group and having a molecular weight of 1,000 or less to pass through the RO membrane. | 10-29-2015 |
| 20150320921 | METHOD FOR STERILIZING BLOOD PURIFIER AND BLOOD PURIFIER PACKAGE - The invention provides a method for sterilizing a blood purifier, as well as a blood purifier package. The method is effective to decrease the amounts of extracts from the blood purifier attributed to the deterioration of the selectively permeable separation membranes with time during and after exposure to a radioactive ray or an electron ray, and is highly reliable in safety when employed for hemocatharsis therapy. The method for sterilizing a blood purifier which comprises substantially dried selectively permeable separation membranes as a main component, by way of the exposure of the same blood purifier to a radioactive ray and/or an electron ray, is characterized in that the blood purifier is sealed in a packaging bag, together with an oxygen scavenger and a humectant or together with an oxygen scavenger capable of releasing a moisture, and is then sterilized in such a sealed state by the above exposure. | 11-12-2015 |
| 20150321925 | PROCESS FOR REMOVING HYDROCARBONS FROM A BODY OF WATER BY MEANS OF SELECTIVE PERMEATION, AND RELATIVE APPARATUS - Process for removing hydrocarbons from a body of water wherein the hydrocarbons are separated from the aqueous phase by selective permeation through a sintered porous filter surface-treated with at least one hydrophobic product, so as to collect the hydrocarbons and remove them from the water without using additional chemical products or products capable of absorbing the hydrocarbons. This allows the body of water to be remediated and at the same time recover the hydrocarbons spilled in a clean and substantially continuous manner. The filter preferably consists of a sintered inorganic material, such as for example a metallic material, a vitreous material, a ceramic material. | 11-12-2015 |
| 20150343386 | COMPOSITIONS AND METHODS OF CLEANING POLYVINYL PYRROLIDONE-BASED HEMODIALYSIS FILTRATION MEMBRANE ASSEMBLIES - A method and/or a composition relates to cleaning and reprocessing a hemodialysis filtration membrane assembly that employs polyvinylpyrrolidone-containing membranes. The method includes the step of treating the assembly with an aqueous mixture or a gas-liquid mixture having an inorganic base and from 100 to 1,000 ppm of a hypochlorite salt, wherein the mixture has a pH between about 12.0 and about 12.5, an oxidation reduction potential of less than 0.5 volts, a temperature of 40° to 55° C. and wherein the mole % of hypochlorous acid, HOCl, relative to the sum of hypochlorous acid plus hypochlorite anion, —OCl, is less than 0.004%. The composition may be used in such a method. | 12-03-2015 |
| 20150352499 | Pressurized Hollow Fiber Membrane Module and Backwashing Method Using Same - The present invention relates to a pressure hollow fiber membrane module, including: a housing in which a raw water inlet, a concentrate water outlet, and a treated water outlet are formed; an inner flow path that is formed in the central portion of the housing; a plurality of hollow fiber membranes that are arranged around the inner flow path; a treated water collection unit that communicates with the inner flow path and the hollow fiber membrane; a first opening/closing unit that opens and closes an open end of the inner flow path; and a second opening/closing unit that opens and closes an open end of the hollow fiber membrane. | 12-10-2015 |
| 20160002072 | REVERSE OSMOSIS MEMBRANE APPARATUS AND METHOD OF OPERATING SAME - A reverse osmosis membrane apparatus has a plurality of high pressure vessels | 01-07-2016 |
| 20160002074 | ADVANCEMENTS IN OSMOTICALLY DRIVEN MEMBRANE SYSTEMS INCLUDING MULTI-STAGE PURIFICATION - An example water purification system for purifying high concentration feed solutions includes a high rejection forward osmosis module, one or more low rejection modules, and a high rejection reverse osmosis module. The low rejection modules may have different rejection levels. The system may be pressurized by one or more pumps. One or more of the low rejection modules may include one or more nanofiltration (NF) membranes. The draw solution may comprise a monovalent salt, a multivalent salt, or a combination of both. | 01-07-2016 |
| 20160002411 | IMPROVING THE CHEMICAL STABILITY OF MEMBRANES - Polymer membranes, especially as used for water filtration processes, are effectively stabilized against detrimental effects of acids, bases and/or oxidizing agents commonly used for chemically enhanced backwash by incorporation of an oligo- or polyurethane of the formula (I) wherein k and n independently are numbers from 1 to 100, m is from the range 0-100, (X) is a block of formula (II) and (Y) is a block of the formula (III), (A) is a residue of an aliphatic or aromatic diisocyanate linker, (B) is a residue of a linear oligo- or polysiloxane containing alkanol end groups, and optionally further containing one or more aliphatic ether moieties, and (C) is an aromatic oligo- or polysulfone block; or a mixture of such oligo- or polyurethanes. | 01-07-2016 |
| 20160023166 | SYSTEM FOR CLEANING A MEMBRANE | 01-28-2016 |
| 20160030889 | Cartridge-Type Hollow Fiber Membrane Module Comprising Submerged Hollow Fiber Membrane Unit Module with Free End and Submerged Apparatus for Water Treatment Comprising Air Diffuser Apparatus Capable Of Intermittent/Continuous Aeration and Its Aeration Method - Provided is a cartridge-type hollow fiber membrane module including a hollow fiber membrane unit module with a free end and a cartridge frame and a submerged water treatment apparatus including an air diffuser apparatus capable of intermittent and continuous aeration disposed below the hollow fiber membrane module, wherein the cartridge-type membrane module with the free end using the coarse bubble generating air diffuser apparatus capable of intermittent/continuous aeration in conjunction with an air accumulation pipe may control aeration/non-aeration cycles through adjustment of the volume of an air chamber and an amount of inflow air and carry out continuous aeration based on changes in raw water load and a concentration of solids in a membrane separation tank. | 02-04-2016 |
| 20160045872 | FILTRATION APPARATUS AND METHOD FOR CLEANING FILTRATION MODULE - Provided are a filtration apparatus and a method for cleaning a filtration module in which it is possible to maintain sufficiently high levels of filtration efficiency even when filtration is continued for a long time. A filtration apparatus includes a filtration module having a hollow-fiber membrane bundle in which a plurality of hollow-fiber membranes are bundled together; a filtration vessel that houses the filtration module; and a cleaning device that cleans the filtration module. The cleaning device includes an internal cleaning device which cleans the hollow-fiber membrane bundle from the inside by jetting wash water from the tip of an internal cleaning nozzle inserted into the hollow-fiber membrane bundle so as to generate an internal cleaning flow in the hollow-fiber membrane bundle. A method for cleaning a filtration module uses the filtration apparatus. | 02-18-2016 |
| 20160046503 | INTELLIGENT FLUID FILTRATION MANAGEMENT SYSTEM - A filtration system can comprise a pressure pump configured to apply a pressure on fluid flowing between a first chamber and a second chamber. The filtration system can also comprise a flow sensor configured to determine at least one parameter associated with fluid flowing across a membrane deposited between the first chamber and a second chamber. The filtration system can comprise a pressure sensor configured to determine pressure readings of the fluid flowing from the first chamber to the second chamber. The filtration system can comprise a filtration management system configured to cause the pressure pump to apply a constant pressure on fluid flowing across the membrane for a first predetermined time based on the pressure reading. The filtration management system can be configured to cause the pressure pump to reverse the fluid flow across the membrane based on the at least one parameter for a second predetermined time. | 02-18-2016 |
| 20160051743 | RE-USE OF A HEMODIALYSIS CARTRIDGE - The present invention provides a hemodialysis machine comprising a removably mountable cartridge having at least one inlet and at least one outlet, the cartridge defining a fluid pathway between said at least one inlet and said at least one outlet, a sanitisation device having an inlet and an outlet, a conduit connected between an outlet of the cartridge and the inlet of the sanitisation device and, a conduit connected between the outlet of the sanitisation device and an inlet of the cartridge. | 02-25-2016 |
| 20160051936 | CENTRAL BAFFLE AND PRESSURE-TYPE HOLLOW FIBER MEMBRANE MODULE COMPRISING THE SAME AND ITS CLEANING METHOD - The present disclosure relates to a structure of a pressure-type hollow fiber membrane module and its cleaning method, and more particularly, to a pressure-type hollow fiber membrane module with a central baffle in which the central baffle has a cylindrical shape with a hollow inside the module. The module includes an air zone with at least one backwash hole passing therethrough and a water zone with at least one backwash hole passing therethrough. The central baffle is installed on the same axis as a concentration part at the center of the pressure-type hollow fiber membrane module to allow a uniform flow of concentrated water and cleaning air in all directions. | 02-25-2016 |
| 20160051937 | METHOD FOR CLEANING HOLLOW FIBER MEMBRANE MODULE - An efficient method is provided for cleaning hollow fiber membrane modules, the method being capable of efficiently removing substances accumulated inside hollow fiber membrane modules. The internal liquid on the raw liquid side of the hollow fiber membrane module ( | 02-25-2016 |
| 20160051943 | NEGATIVELY CHARGED POROUS MEDIUM FOR REMOVING PROTEIN AGGREGATES - A negatively charged microporous filtration medium having a high charge density comprising a porous substrate and a polymerized cross-linked polymeric coating located on the inner and outer surfaces of the substrate. The coating may be formed from a reactant solution comprising negatively charged cross-linkable polymerizeable acrylamidoalkyl monomers and acrylamido cross-linking agents which are polymerized in situ on the substrate. The negatively charged microporous filtration medium are suitable for use as prefiltration membranes for selectively removing protein aggregates from a protein solution. | 02-25-2016 |
| 20160052812 | REJECT RECOVERY REVERSE OSMOSIS (R2RO) - A process for the recovery of purified water from a reverse osmosis reject stream includes preconditioning a reject stream to remove scaling ions and provide preconditioned water; separating any precipitate that forms in the preconditioned water to form a feed stream; subjecting the feed stream to high pressure membrane filtration system including a recirculating, high pressure pump generating a permeate stream and a second reject stream; adding a make-up water stream to the feed stream; and separating the permeate stream as purified water. Additional features and embodiments are also provided. | 02-25-2016 |
| 20160060151 | METHOD FOR TREATING INDUSTRIAL WATER BY PHYSICAL SEPARATION, ADSORPTION ON RESIN AND REVERSE OSMOSIS, AND CORRESPONDING PLANT - The present invention relates to a method for treating industrial water containing organic matter, said method comprising:
| 03-03-2016 |
| 20160068419 | ANOXIC MEMBRANE FILTRATION SYSTEM AND WATER TREATMENT METHOD - A system is provided for treating contaminated water. The system includes a bioreactor having an outlet for treated water and a filter coupled to receive treated water from the outlet of the bioreactor. The filter is configured to operate in an anoxic mode. The filter has: (a) a vessel configured to receive the treated water, (b) a membrane associated with the vessel and positioned to extract permeate from the received water, (c) a fluid outlet positioned to direct fluid toward the membrane to inhibit film build up on the membrane, (d) a fluid recirculator positioned to recirculate fluid between the vessel and the fluid outlet, and (e) an oxidant supply positioned to introduce an oxidant into the vessel, the oxidant supply being adjustable to control the oxidation-reduction potential of the received water in the vessel within a predetermined range. | 03-10-2016 |
| 20160083273 | METHOD OF OPERATING A PRESSURE-RETARDED OSMOSIS PLANT - A method of operating a pressure-retarded osmosis plant, the plant comprising at least one osmosis element having a semi-permeable membrane, the semi-permeable membrane defining a feed side and a permeate side of the osmosis element, the method comprising, in a first mode of operation, supplying a feed stream having a relatively high concentration of solute to the feed side, supplying a permeate stream having a relatively low concentration of solute to an inlet of the permeate side, and receiving a feed outlet stream from the feed side wherein permeate has passed through the semi-permeable membrane from the permeate side to the feed side, in a second mode of operation, supplying a backwash stream having a relatively low concentration to the feed side of the osmosis element such that water passes through the semi-permeable membrane, and receiving a permeate outlet stream from an outlet of the permeate side, the method further comprising alternately performing the first mode of operation, to perform a production step, and performing the second mode of operation, to reduce fouling of the semi-permeable membrane. | 03-24-2016 |
| 20160089636 | Oscillatory crossflow membrane separation - Oscillatory crossflow membrane separation apparatus and methods are disclosed for effluent treatment. The apparatus include a membrane module with a housing containing a membrane element, said module having an input for receiving effluent for treatment and a treated effluent output. A crossflow pump is connected for moving oscillating fluid through the membrane module and a feed pressure pump is connected with the membrane module for applying membrane operating pressure. A fluid oscillator is active with either pump for pulsating fluid received thereat. | 03-31-2016 |
| 20160096143 | COMPACT MULTI MEMBRANE VESSEL FOR WATER ULTRAFILTRATION - A filtration vessel at least partially removes a contaminant from a fluid. The vessel has an inlet pipe which is mounted to a first end cab and to a supporting plate of the vessel. The inlet pipe has at least one slot through which the fluid is injectable into an inner volume of a vessel body. At least one membrane rod including a plurality of membrane straws is mounted to the first through hole of the supporting plate such that the membrane rod extends from the supporting plate into the inner volume. A method for backwashing the device includes injecting gas in the storage volume and a method of detection of leaks uses gas bubbles. | 04-07-2016 |
| 20160101389 | METHOD OF PERFORMING A CLEANING OPERATION ON A WATER FILTRATION DEVICE - The method is used for performing a cleaning operation on a water filtration device having an inlet, a concentrate outlet, a permeate outlet, a filtration membrane between the inlet and the permeate outlet, the filtration membrane filtering water under pressure during a filtration operation of the water filtration device, and a recirculation line leading from at least one of the concentrate outlet and the permeate outlet back to the inlet. The method generally has a step of performing the cleaning operation including recirculating a solution along the recirculation line, the solution having at least water and one cleaning agent, the step of recirculating including maintaining a circulation of the solution along the entire length of the recirculation line. | 04-14-2016 |
| 20160107124 | FILTRATION DEVICE AND FILTRATION METHOD USING SAME - A filtration device includes a tubular body having an inlet and an outlet for a solution to be treated, and a plurality of hollow fiber membranes aligned in the tubular body. By creating a difference in pressure between the outside and inside of the hollow fiber membranes, water in the solution to be treated is passed from the outside to the inside. The filtration device further includes a gas supply unit configured to supply a bubble from below the plurality of hollow fiber membranes. The tubular body has a gas discharge port above the inlet and the outlet. The gas discharge port is provided for discharging the bubble supplied from the gas supply unit to the outside. | 04-21-2016 |
| 20160107126 | Materials and Methods for Reducing Biofouling in Water Treatment Membrane Systems - Methods and systems for preventing biofouling of membranes utilized in water treatment processes (i.e., water treatment membranes) are described. Methods include X-ray excitation of luminescent materials capable of emitting in the violet to UV range (e.g., from about 180 nm to about 440 nm). X-rays are directed at water treatment modules to contact the luminescent materials within the modules and excite internal violet/UV to prevent biofouling of membranes. The methods can be utilized in conjunction with existing processing equipment and can prevent biofouling of water treatment membranes in high volume treatment processes in an environmentally friendly fashion. | 04-21-2016 |
| 20160121269 | FILTRATION SYSTEM AND FILTRATION METHOD - Disclosed are system and method for filtration capable of minimizing the damage of a filtration membrane module, reducing the energy consumption, and improving the filtration efficiency. The filtration method of the invention comprises performing a preliminary filtration of a feed water with first and second submerged-type filtration membrane modules; pressurizing an initial filtrate produced through the preliminary filtration with a pressure higher than an osmotic pressure of the feed water; filtering the pressurized initial filtrate with a reverse osmosis membrane module; interrupting the first submerged-type filtration membrane module performing the preliminary filtration; and backwashing the first submerged-type filtration membrane module caused to stop performing the preliminary filtration, wherein the preliminary filtration with the second submerged-type filtration membrane module is continuously performed while the first submerged-type filtration membrane module is backwashed. | 05-05-2016 |
| 20160121270 | FILTRATION APPARATUS AND IMMERSION-TYPE FILTRATION METHOD USING THE APPARATUS - The invention offers a filtration apparatus having excellent capability to clean the surface of hollow-fiber membranes and being able to maintain high filtration capability and an immersion-type filtration method using the filtration apparatus. The invention is a filtration apparatus that is an immersion type and that is provided with both a filtration module having multiple hollow-fiber membranes held in a state in which they are arranged by being pulled unidirectionally and a gas supplier that supplies gas bubbles from under the filtration module. In the filtration apparatus, each of the gas bubbles supplied by the gas supplier is divided into a plurality of gas bubbles after colliding against the filtration module. It is desirable that the gas bubbles supplied by the gas supplier have an average horizontal diameter larger than the maximum spacing of holding portions in the multiple hollow-fiber membranes in the filtration module. | 05-05-2016 |
| 20160159672 | ULTRAPURE WATER PRODUCTION SYSTEM, ULTRAPURE WATER PRODUCTION FEED SYSTEM, AND METHOD FOR CLEANING THEREOF - Contaminants present inside an ultrapure water production system are prevented from being fed into a feed pipe connected to a water use point and, after sterilization cleaning, the system is prevented from being contaminated by contaminants captured on a microparticle removal membrane during sterilization cleaning. Ultrapure water having high quality is thereby fed to a water use point within a short period of time. An ultrapure water production system is provided with a tank, a pump, a heat exchanger, an ultraviolet device, an ion-exchange device, a first microparticle removal membrane device, and a second microparticle removal membrane device. Parts of sterilization water and flush water are fed into the first microparticle removal membrane device and discharged from a feedwater-side potion to a concentrated-water-side portion without permeating through a microparticle removal membrane thereof, and the remaining part of the water is passed through the second microparticle removal membrane device. | 06-09-2016 |
| 20160167999 | METHOD FOR TREATING SULFATE-, CHLORIDE, MERCURY- AND SELENIUM-CONTAINING WASTE WATER | 06-16-2016 |
| 20160175779 | HIGH VELOCITY CROSS FLOW DYNAMIC MEMBRANE FILTER | 06-23-2016 |
| 20160185630 | MULTIFUNCTIONAL METHOD FOR MEMBRANE PROTECTION AND BIOFOULING CONTROL - The invention provides methods and compositions for the protection of a membrane from both biofouling and from damage caused by a biocide. The invention utilizes PAA as both a biocide and as a reducing agent for other oxidizing biocides. This is especially beneficial because without the invention one would be forced to choose between preventing membrane biofouling or preventing membrane damage from oxidizing biocides. | 06-30-2016 |
| 20160193569 | CYCLING ULTRA-THIN CHANNEL FILTRATION | 07-07-2016 |
| 20160199558 | Dual Haemodialysis and Haemodiafiltration Blood Treatment Device | 07-14-2016 |
| 20160200597 | HYPERFILTRATION SYSTEM SUITABLE FOR HOUSEHOLD USE | 07-14-2016 |
| 20160375407 | MEMBRANE FOULING REDUCTION USING CHEMICAL MICROPUMPS - Provided are processes of removing particulate fouling from a filtration membrane or for preventing membrane fouling by particulate matter. A process capitalizes on reversal of a naturally occurring diisophoretic particle deposition to actively move particulate material away from a membrane. A process includes placing a microparticle including a salt in proximity to a membrane such that the microparticle creates a gradient generated spontaneous electric field or a gradient generated spontaneous chemiphoretic field in the solvent proximal to the membrane that actively draws charged particles away from the membrane thereby removing charged particulate matter away from the membrane or preventing its deposition. | 12-29-2016 |
| 20170232391 | METHOD FOR THE REGENERATION OF A MEMBRANE WALL IN A DISTILLATION DEVICE | 08-17-2017 |
| 20170232395 | WATER TREATMENT DEVICE AND OPERATING METHOD FOR WATER TREATMENT DEVICE | 08-17-2017 |
| 20170232396 | CONTROL METHOD FOR A FILTER SYSTEM | 08-17-2017 |
| 20180021733 | METHOD AND APPARATUS FOR EFFECTING HIGH RECOVERY DESALINATION WITH PRESSURE DRIVEN MEMBRANES | 01-25-2018 |
| 20180021734 | WATER TREATMENT SYSTEM AND METHOD FOR TREATING WATER LOCATED IN A WATER RESERVOIR | 01-25-2018 |
| 20180021735 | METHOD FOR IDENTIFYING THE TYPE OF CLOGGING IN A MEMBRANE FILTRATION APPARATUS | 01-25-2018 |
| 20190143275 | ANTIBIOFILM AND ANTIMICROBIAL FUNCTIONAL MEMBRANE SPACER | 05-16-2019 |
| 20220135456 | SUBMERGED MEMBRANE UNIT WITH SINGLE DROP AERATION - A device including a housing having a first side, a second side opposed to the first side, and a wall disposed between the first side and the second side. The wall forms at least a partially enclosed space inside the housing. The device also includes a membrane mounted to the wall inside the housing. The device also includes a drop pipe disposed inside the housing and through or around the membrane, the drop pipe having a proximal end and a distal end, the distal end being closer to the second side than the proximal end. The device also includes a diffuser connected to the distal end of the drop pipe. | 05-05-2022 |
