| Entries |
| Document | Title | Date |
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| 20080203015 | System and method for enhancing an activated sludge process - A system for enhancing an activated sludge process that includes at least one aeration tank subsystem for receiving a flow a wastewater and for introducing dissolved oxygen to a population of microorganisms to promote growth of biological flocs in a mixed liquor defined by a concentration of mixed liquor suspended solids. A weighting agent impregnation subsystem includes an impregnation tank for mixing the mixed liquor, virgin weighting agent, and recycled weighting agent to impregnate the weighting agent into biological flocs suspended in the mixed liquor to form weighted biological flocs. A flocculant injection port located downstream from at least one aeration tank for introducing a flocculant to the mixed liquor for enhancing settling and thickening of the weighted biological flocs and for providing agglomeration of non-impregnated biological flocs and/or partially impregnated biological flocs with weighted biological flocs. At least one clarifier separates and collects the weighted biological flocs from the mixed liquor to provide a secondary effluent and a settled sludge. A return activated sludge subsystem recycles the majority of the settled sludge to the at least one aeration tank. A weighting agent recovery subsystem removes and shears the remaining settled sludge and recovers the weighting agent therefrom and reintroduces the weighting agent to the at least one aeration tank. A wasting subsystem wastes the remaining sludge of the weight agent recovery subsystem to control the population of the microorganisms in the mixed liquor. | 08-28-2008 |
| 20080210628 | Process for the Biological Treatment of Ammonium-Rich Aqueous Media - The invention relates to a process for the biological treatment of ammonium-rich aqueous media in the presence of ammonia oxidizing bacteria, by supplying nitrogen dioxide (NO | 09-04-2008 |
| 20080210629 | Biogeochemical reactor - A new and improved in situ biogeochemical reactor, methods for constructing such reactors, and methods for using such reactors, for biodegradation, detoxification and mineralization of toxic organic and inorganic compounds, especially dioxins, in contaminated geologic settings, such as waterways is disclosed. The system includes both an anaerobic component and an aerobic component that are coupled to each other. The system is enriched with carbon, nutrients and growth factors in sufficient amounts to establish a full spectrum oxidation-reduction gradient thereby enabling, promoting and providing indigenous microbial populations to biodegrade, detoxify, and mineralize toxic organic and inorganic compounds in a contaminated geological site. | 09-04-2008 |
| 20080210630 | METHODS AND KITS FOR BIOREMEDIATION OF CONTAMINATED SOIL - The present invention relates to apparatus, methods, and applications for treating wastewater, and more particularly to biological processes for removing pollutants from wastewater. This invention further relates to apparatus and methods for growing microbes on-site at a wastewater treatment facility, and for economically inoculating sufficient microbes to solve various treatment problems rapidly | 09-04-2008 |
| 20080237122 | Water Treatment By Activated Sludge - The invention relates to a method of treating water with activated sludge containing micro-organisms. The method comprises the steps of: preparing an environmentally adapted biomass mixture by adapting the activated sludge to a quantity of water having given characteristics in a single reactor under first levels of aeration, whereby the environmentally adapted biomass mixture acquires the capacity to cause concurrent reactions for BOD removal, nitrification and de-nitrification; and treating a portion of water having substantially the same given characteristics with the environmentally adapted biomass mixture capable of causing the concurrent reactions, in the single reactor under a second level of aeration not higher than the first levels of aeration. | 10-02-2008 |
| 20080277338 | Methods of treatment of ground water - The present invention relates to apparatus, methods, and applications for treating wastewater, and more particularly to biological processes for removing pollutants from wastewater. This invention further relates to apparatus and methods for growing microbes on-site at a wastewater treatment facility, and for economically inoculating sufficient microbes to solve various treatment problems rapidly | 11-13-2008 |
| 20080277339 | Oil tank cleaning - A system and method for cleaning oil tanks comprising: a bio-reactor for producing bacterial cultures containing bio-emulsifiers from bacteria, air, water and sources of utilizable carbon, nitrogen and phosphate; a first pump for pumping the bacterial cultures from the bio-reactor through a first pipe into the oil tank; at least one spraying nozzle connected to the first pipe for spraying the bacterial cultures onto the oil tank's floor and walls under anaerobic conditions; and a second pump for pumping fluid out of the oil tank through a second pipe into a receiving container. | 11-13-2008 |
| 20080296220 | Water Treatment - An apparatus for the biological treatment of saltwater-based domestic wastewater, the apparatus having an inlet for the introduction of the saltwater-based domestic wastewater, an outlet for the removal of treated wastewater, means for monitoring the salinity level of the saltwater-based domestic wastewater entering or within the apparatus and means for controlling the salinity level of the saltwater-based domestic wastewater entering or within the apparatus such that fluctuations in the salinity level of the saltwater-based domestic wastewater are reduced and the biological treatment of the saltwater-based domestic wastewater is thereby maintained. | 12-04-2008 |
| 20080308493 | Wastewater treatment - A system and method for treating wastewater by continuously flowing wastewater into a chemostat and continuously discharging clean water out of the chemostat. The system can include sensors and an electronic controller for on-line measuring ambient parameters in the chemostat and adjusting the chemostat's operating conditions accordingly. | 12-18-2008 |
| 20090026134 | IN-SITU GROUNDWATER NITRIFICATION AND DE-NITRIFICATION REMEDIATION SYSTEM - A method of in-situ groundwater nitrification, by: extracting groundwater from the ground; adding oxygen to the extracted groundwater; adding nutrients to the extracted groundwater; and injecting the groundwater back into the ground, wherein the oxygen reacts with in-situ nitrifying bacteria to oxidize ammonia to nitrate, and wherein the nutrients encourage the nitrifying bacteria to grow and reproduce. A method of in-situ groundwater de-nitrification, by: extracting the groundwater from the ground; adding carbon to the extracted groundwater; adding nutrients to the extracted groundwater; and injecting the groundwater back into the ground, wherein the carbon reacts with in-situ de-nitrifying bacteria to reduce nitrate to nitrogen gas, and wherein the nutrients encourage the de-nitrifying bacteria to grow and reproduce. | 01-29-2009 |
| 20090139928 | Method And Apparatus For Biologically Processing Fluid - The present invention provides an apparatus and method for biologically treating fluids, in particular municipal or industrial wastewater or the like, the apparatus comprising a pair of reservoirs each containing growth medium having a biofilm thereon, the apparatus being arranged to pump the wastewater from one reservoir to another such as to alternatively expose the biofilms within the reservoirs to air and wastewater, thus making it possible to achieve sequential aerobic, anoxic and anaerobic conditions in the biofilms. | 06-04-2009 |
| 20090152193 | DRAINAGE WATER-TREATING METHOD AND DRAINAGE WATER-TREATING APPARATUS - Drainage water containing an organofluorine compound is introduced into a raw tank ( | 06-18-2009 |
| 20090152194 | REMOVAL OF SELENIUM IN CONTAMINATED WASTEWATER STREAMS - Compositions and methods for the removal of selenium species from water containing high-salt concentrations and/or petroleum contaminants are described. The compositions and methods use a selenium-reducing microorganism adapted to adverse environments. | 06-18-2009 |
| 20090236282 | METHODS FOR BIOLOGICAL PURIFICATION OF WASTE - A method for purifying a waste environment includes treating a portion of the waste environment to inactivate or diminish native microorganisms, adding augmenting microorganisms to the treated waste environment, simultaneously growing and acclimating a microbiological culture and discharging the microbiological culture to the waste environment. The method provides improved biological purification of waste and in-situ bioaugmentation. | 09-24-2009 |
| 20090308808 | System And Apparatus For Contaminant Remediation - An apparatus and method for remediating an underground and/or aqueous contaminant. The method and apparatus utilize at least one electrically conductive surface to attract aqueous hydrogen ions. At the surface, the hydrogen ions interact with excess electrons to form dissolved hydrogen molecules. Dissolved hydrogen molecules provide a proton source for bioreactive material, either provided to or naturally occurring in the environment. The bioreactive material assists in the reduction of the contaminant into a less environmentally harmful compound. | 12-17-2009 |
| 20090321350 | METHOD OF GROWING BACTERIA FOR USE IN WASTEWATER TREATMENT - A device and method for growing aerobic and facultatively anaerobic bacteria such as | 12-31-2009 |
| 20100006499 | SUPPORT FOR HOLDING A COMPLEXED ACCUMULATION OF DEGRADING BACTERIA AND MANUFACTURING METHOD THEREOF, NOVEL BACTERIA, AND METHOD OF CLEANING POLLUTED ENVIRONMENT AND DEVICE THEREOF - The present invention provides a stable complex microbial system, which simultaneously decomposes a plurality of organic contaminants even under a polluted environment with these contaminants and permits more effective decomposition of persistent organic contaminants such as PCNB and simazine. A support for holding a complexed accumulation of degrading bacteria, which contains a porous material provided as a support on which a degrading bacterium A capable of degrading at least one organic contaminant and a degrading bacterium B capable of degrading another organic contaminant are accumulated, is produced. The degrading bacterium A may be a PCNB-degrading bacterium, particularly a degrading bacterium containing a degrading bacterium having part or all of mycological characteristics of | 01-14-2010 |
| 20100012581 | DENITRIFICATION TREATMENT SYSTEM AND METHOD - A two-stage treatment process, for the treatment of nitrate rich water, particularly aquaculture pond water, wherein in the first stage a degassing chamber is used for removing dissolved oxygen from a stream of water flowing out of the aquaculture system, and in the second stage the stream of water obtained from said degassing chamber is flown into a denitrifying biofilter comprising a biofilter media which functions as a biological growth media and as a carbon source, wherein said denitrifying biofilter is capable of biologically reducing both nitrate and nitrite compounds into nitrogen gas. | 01-21-2010 |
| 20100044304 | METHOD OF TREATING WASTEWATER CONTAINING ORGANIC COMPOUND - [Problems] To provide a method of treating an organic substance-containing waste liquid, and a treatment apparatus therefor, and an additive for treating an organic substance-containing waste liquid, and a bacterium for degrading an organic substance component or the like in the waste liquid, capable of accomplishing at least one of treatment of the organic substance-containing waste liquid with a high efficiency and a high treatment rate, without substantially generating a foul odor, and obtainment of water quality that is suitable for releasing to sewage, a public water area, or the like. | 02-25-2010 |
| 20100059438 | VERTICAL-HORIZONTAL FILTER UNIT FOR THE BIOLOGICAL PURIFICATION OF POLLUTED WATER - The present invention relates to a vertical-horizontal filter unit for the biological purification of polluted water, comprising an upper zone of a soil patch planted with plants, having inlets for the polluted water, and arranged underneath a sand layer with a lower filter zone made of gravel and at least one removal point for the purified water, wherein between the upper and lower filter zones a barrier layer with openings is arranged and the filter unit is sealed against the soil on the sides and at the bottom. The openings in the barrier layer are arranged along the edge and/or the barrier layer does not reach the edge of the patch completely. The invention is characterized in that the upper zone acts as an aerobically cleaning zone and the lower zone as an anaerobically cleaning zone. | 03-11-2010 |
| 20100089825 | Systems And Methods For Treatment Of Perchlorate Contaminated Water - The invention provides systems and methods for removing perchlorate from water. The systems comprise reactors comprising biomass for degrading perchlorate, and the operation of the systems can be controlled according to novel logic specifications. Also provided are filters and filtration systems for clearing water in advance of analysis of the concentration of contaminants within the water. The filters comprise a length of tubing configured to generate backpressure at the filter sufficient to facilitate the flow of a water sample through the filter without overpressurization. | 04-15-2010 |
| 20100089826 | METHODS OF REDUCING THE TIME REQUIRED FOR COMING INTO COMPLIANCE - The present invention relates to apparatus, methods, and applications for treating wastewater, and more particularly to biological processes for removing pollutants from wastewater. This invention further relates to apparatus and methods for growing microbes on-site at a wastewater treatment facility, and for economically inoculating sufficient microbes to solve various treatment problems rapidly | 04-15-2010 |
| 20100096323 | METHODS OF REDUCING THE COST REQUIRED FOR COMING INTO COMPLIANCE - The present invention relates to apparatus, methods, and applications for treating wastewater, and more particularly to biological processes for removing pollutants from wastewater. This invention further relates to apparatus and methods for growing microbes on-site at a wastewater treatment facility, and for economically inoculating sufficient microbes to solve various treatment problems rapidly | 04-22-2010 |
| 20100126929 | MEMBRANE SUPPORTED BIOFILM APPARATUS AND PROCESS - A membrane supported biofilm apparatus has a plurality of hollow fiber gas permeable membranes in a tank containing water to be treated. The membranes have an outside diameter of about 200 microns or less and occupy between 0.5% and 4% of the tank volume. A biofilm supported on the membranes occupies between about 40% and 80% of the volume of water to be treated in a reactor. The membranes may be oriented generally vertically and a spreader may be located near the bottom of the apparatus to disperse the membranes. Wastewater treatment processes are described. A process to dentrify water or treat oxidized contaminants comprises introducing hydrogen into an inner volume of the membranes to grow autotrophic organisms in the biofilm near the membrane and heterotrophic organism near the water. Another process is operated at a biomass concentration of at least 10 g/L and up to about 40 g/L to maintain a biofilm having a surface area of over 1000 square metres per cubic metre of tank volume. A hybrid process has suspended biomass and a membrane supported biofilm. | 05-27-2010 |
| 20100126930 | DENITRIFICATION PROCESS AND SYSTEM - The disclosed process and system are used for the denitrification of wastewater. The system comprises: an influent concentration analyzer for measuring an influent dissolved oxygen concentration, an influent nitrate concentration, and an influent nitrite concentration; and a feed chemical controller for providing a feed chemical at a controlled rate. The feed chemical controller is responsive to one or more output signals provided by an automated control loop that accepts input signals from the influent concentration analyzer, which input signals relate to at least two of the influent nitrate concentration, the influent nitrite concentration, and the influent dissolved oxygen concentration | 05-27-2010 |
| 20100163484 | Compound for denitrifying wastewater - Disclosed is a method of denitrifying a solution including introducing into the solution an amount of a carbon source within a duration and at a frequency so that indigenous heterotrophic bacteria deplete dissolved oxygen in the solution and decompose oxygen from nitrate in the solution to obtain its combined oxygen. Related apparatuses and compounds also are disclosed. | 07-01-2010 |
| 20100193430 | SYSTEMS AND METHODS FOR TREATING OIL, FAT AND GREASE IN COLLECTION SYSTEMS - The present invention relates to apparatus, methods, and applications for treating wastewater collection systems contaminated with fats, oils and grease (FOG), such as wet wells, transfer or lift stations, or main sewer lines, and more particularly to biological processes for removing the FOG from wastewater. This invention further relates to apparatus and methods for growing microbes on-site at a wastewater treatment facility or FOG-contaminated wastewater collection system location, and for economically inoculating sufficient microbes to solve various treatment problems rapidly. | 08-05-2010 |
| 20100282673 | METHOD AND APPARATUS FOR TREATING NITRATE WASTE LIQUID - To provide an apparatus for treating a nitrate waste liquid that includes a denitrification tank ( | 11-11-2010 |
| 20100300963 | APPARATUS AND METHOD FOR TREATING FGD BLOWDOWN OR SIMILAR LIQUIDS - A process has steps of one or more of aerobic treatment to remove COD and nitrify a waste stream, anoxic treatment to denitrify a waste stream, anoxic treatment to remove selenium and anaerobic treatment to remove heavy metals and sulphur. The process may be used to treat, for example, FGD blow down water. The process may further include one or more of (a) membrane separation of the waste stream upstream of the anoxic digestion to remove selenium, (b) dilution upstream of the biological treatment step, (c) physical/chemical pretreatment upstream of the biological processes or dilution step to remove TSS and soften the waste stream, or (d) ammonia stripping upstream of the biological treatment steps or dilutions step. These processes may be provided in a variety of suspended growth or fixed film reactors, for example a membrane bioreactor or a fixed film reactor having a GAC bed. Processes for biological treatment of inorganic compounds in a fixed medium reactor is described including steps of one or more of maintaining desired ORP levels, optionally by controlling nutrient addition, and removing solids or gas bubbles from the medium bed. | 12-02-2010 |
| 20100307971 | METHOD AND DEVICE FOR FILTERING LIQUID IN AN AQUARIUM - The method and device for filtering liquid in an aquarium, the filtration device made by the liquid filtration method comprises a box-shaped casing, the filtration bodies and filtration materials are set inside the casing, wherein the casing includes a water inlet set around the casing and grid panels set inside both sides of the casing; the filtration bodies include an inner filtration body set inside the grid panels and an outer filtration body set outside the grid panels; the filtration materials are filled inside the casing, between the inner filtration body and grid panels; in this way, the liquid to be filtered enters into the casing through the water inlet and flows out from the grid panels, and proceeds further from the casing via the inner filtration body, filtration materials and outer filtration body treatment. The liquid filtration device has the advantages of being an integrated replacement as a filtration consumable, good universality, convenient installation and maintenance, large filtration area and effective prevention of dirt left after filtration from a backflow. | 12-09-2010 |
| 20100314312 | METHODS OF BIOREMEDIATION - Methods for bioremediation of contaminants in water using soapstock, an acid oil of soapstock, a neutralized acid oil of soapstock or combinations thereof are described. Systems for bioremediation are also disclosed. | 12-16-2010 |
| 20110011798 | REMOVAL OF SELENIUM IN CONTAMINATED WASTEWATER STREAMS - Compositions and methods for the removal of selenium species from water containing high-salt concentrations and/or petroleum contaminants are described. The compositions and methods use a selenium-reducing microorganism adapted to adverse environments. | 01-20-2011 |
| 20110031185 | COMBINED CHEMICAL OXIDATION/ASSISTED BIOREMEDIATION OF CONTAMINANTS - A method for the combined chemical oxidation/assisted bioremediation of contaminated materials, comprising contacting a contaminated material with at least one metal chelate and at least one peroxide compound. | 02-10-2011 |
| 20110073543 | SYSTEM AND METHOD FOR USING UREA AS A NITROGEN SOURCE IN A BIOREACTOR - The disclosure describes systems and methods for utilizing urea in a bioreactor as a source of nitrogen. | 03-31-2011 |
| 20110073544 | DENITRIFICATION PROCESS - A method of mixing organic carbon with the final effluent for water treatment systems and applying the mixture to manmade stratified sand filters or natural soils to induce proper conditions for high removal of total nitrogen in the final effluent. In one embodiment, water having a concentration less than about 30 mg/l of Total Nitrogen (TN) and a BOD | 03-31-2011 |
| 20110139713 | METHOD OF TREATMENT FOR WASTE WATER USING MICROBIALGROWTH PROMOTER - The invention comprises a method of treating waste water using a formulation that stimulates microorganisms and increases biological activity. Also included is the method for preparing the formulation used in the method. The formulation is both environmentally and physically safe. The formulation in the inventive method increases the respiration and reproductive rates of most bacteria. The method includes introduction of the formulation into a waste water treatment system non-selectively which enhances aerobic biological activity, thereby improving both carbonaceous and nitrogenous removals. The formulation is especially effective for endogenous situations. The non-selective nature of the formulation enhances most biological activity, thus allowing for overall performance improvements within a waste water treatment plant and in other activities. The formulation is made by the blending of | 06-16-2011 |
| 20120055868 | PROCESS FOR THE PURIFICATION OF AN AQUEOUS STREAM COMING FROM THE FISCHER-TROPSCH REACTION - Process for the purification of an aqueous stream coming from the Fischer-Tropsch reaction which comprises: —feeding said aqueous stream containing the organic by-products of the reaction to a distillation column, obtaining two output streams: —an aqueous stream (i) exiting from the column head, enriched with alcohols having from 1 to 20 carbon atoms, preferably from 1 to 9 carbon atoms, and other optional volatile compounds; an aqueous stream (ii) exiting from the column bottom, enriched with organic acids having from 1 to 10 carbon atoms, preferably from 2 to 6 carbon atoms; —subjecting said aqueous stream (ii) to an anaerobic biological treatment obtaining a purified aqueous stream (iii); wherein said anaerobic biological treatment is carried out with a hydraulic retention time lower than 15 hours, preferably ranging from 4 hours to 10 hours, more preferably ranging from 5 hours to 8 hours. | 03-08-2012 |
| 20120091058 | MODULAR BIOREACTOR SYSTEM - A modular, vertical bioreactor system includes a plurality of vertical bioreactor chambers each of which encloses an interior volume and has a height dimension which is greater than its width dimension; a drain manifold which maintains the bioreactor chambers in a spaced apart relationship and defines a fluid channel which is in fluid communication with each of the vertical bioreactor chambers; and, a fluid delivery assembly which delivers a fluid to each of the bioreactors. The system may be reconfigured so as to accommodate varying applications. The system may be integrated with an aquaculture system. | 04-19-2012 |
| 20120217201 | METHOD FOR ENHANCING BIOLOGICAL WATER TREATMENT - A mixture for treating water in a biological water treatment process is provided comprising an organic-based flocculant, a micronutrient; and a polymer. The flocculant, the micronutrient and the polymer are mixed in a predetermined ratio to enhance said biological water treatment. The mixture is particularly suited to enhancing flocculation of particles, reducing fouling on a surface of a membrane in a membrane bioreactor, improving uptake of phosphorous and/or nitrogen by a biomass in a biological water treatment system, improving bioactivity of a biomass and/or floc in a biological water treatment system and improving flux in a membrane bioreactor. | 08-30-2012 |
| 20120279919 | MULTISTAGE BIOLOGICAL REACTOR - A multistage biological reactor mountable within a settling pond is disclosed. The aforesaid system comprises a wastewater inlet, a plurality of individual cells successively conducting a wastewater flow and a treated wastewater outlet. Each cell comprises a hollow framework and a plurality of mesh substrates mechanically fixed to the framework. The substrates are configured for growth of microorganisms thereupon. The substrates in successively disposed cells are characterized by mesh fineness increasing along the wastewater flow from inlet to outlet. The reactor comprises means to dislodge solids built up upon the substrates thereby preventing excess solids buildup upon the mesh, allowing the system to operate in steady state without periodic solids removal. | 11-08-2012 |
| 20120305479 | MIXED SUBSTRATES FOR ANAEROBIC BIOREMEDIATION IN AQUIFERS - A method for the in-situ biological remediation of groundwater contaminated with halogenated organic compounds, heavy metals, various inorganic compounds, nitrate, and other compounds which can be reduced into less harmful by-products under anaerobic conditions through the application and distribution of a water-soluble microbial substrate mixture consisting of alcohol, carboxylates, and glycerol in an alkaline solution. The method delivers and distributes a substrate mixture into impacted groundwater zones using different mixture proportions based on aquifer conditions so as to optimize distribution in the aquifer. Acclimated microbes and nutrients are also added as needed. | 12-06-2012 |
| 20120312743 | SELF-SUSTAINED MICROBIAL DETOXIFICATION OF SOLUBLE SULFATE FROM ENVIRONMENTAL EFFLUENT - Systems and methods for the bioremediation of soluble sulfates from an environmental effluent, include a first chamber including lactic acid bacteria immobilized on a first matrix and a second chamber including sulfate-reducing bacteria immobilized on a second matrix. The methods include providing the lactic acid bacteria a suitable medium for the production of lactic acid, which is directed to the culture of sulfate-reducing bacteria for use as a substrate/electron donor for the reduction of sulfates present in the environmental effluent. | 12-13-2012 |
| 20120318734 | SYSTEMS, APPARATUSES AND METHODS FOR TREATING WASTE WATER - A system of treating high nitrogen content waste water is disclosed, where the system includes a precipitation and conditioning subsystem, an ammonia stripper subsystem, and a denitrification subsystem. The system is adapted to reduce nitrogen contamination to level below about 10 ppm and in certain embodiments below 3 ppm. | 12-20-2012 |
| 20130015126 | IN SITU BIOREMEDIATION OF CONTAMINATED GROUNDWATER USING ELECTRON ACCEPTOR SALTS - A process is provided for bioremediating petroleum hydrocarbon contaminated groundwater by applying at least one electron acceptor salt to a ground surface overlying the contaminated groundwater. The process includes identifying characteristics of the aquifer, in which the contaminated groundwater is found, to enable treatment of aquifers at a range of depths below the ground surface. | 01-17-2013 |
| 20130105389 | WATER TREATMENT METHOD AND ULTRAPURE WATER PRODUCTION METHOD | 05-02-2013 |
| 20130126425 | Advanced Biologic Water Treatment Using Algae - An advanced water treatment method processes a continuous flow of water in a sequence of stages including pre-filtering [ | 05-23-2013 |
| 20130161254 | MEMBRANE SUPPORTED BIOFILM APPARATUS AND PROCESS - A membrane supported biofilm apparatus has a plurality of hollow fiber gas permeable membranes in a tank containing water to be treated. A biofilm supported on the membranes occupies between about 40% and 80% of the volume of water to be treated in a reactor. Wastewater treatment processes are described. A process to denitrify water or treat oxidized contaminants comprises introducing hydrogen into an inner volume of the membranes to grow autotrophic organisms in the biofilm near the membrane and heterotrophic organism near the water. Another process is operated as a biomass concentration of at least 10 g/L and up to about 40 g/L to maintain a biofilm having a surface area of over 1000 square metres per cubic metre of tank volume. A hybrid process has suspended biomass and a membrane supported biofilm. | 06-27-2013 |
| 20130180914 | Long-term Sequestration of Uranium in Iron-Rich and Iron-Enriched Sediment - In situ formation of U(VI)-Fe(III) oxides and hydroxides can provide effective uranium remediation. The reason for this is that such compounds can effectively sequester uranium, even in the (VI) oxidation state. Such compounds can be formed in situ by 1) providing Fe(II), 2) reducing uranium to U(IV), and 3) oxidizing the resulting mixture to provide the desired U(VI)-Fe(III) oxides and hydroxides. | 07-18-2013 |
| 20130199996 | GROUND WATER REMEDIATION USING HUMATE ENHANCED AEROBIC COMETABOLISM - A process of bioremediation of chlorinated solvents is provided. The process involves stimulating a microbial biomass of bacteria having oxygenase activity through the introduction of natural organic matter, such as a soluble humate, into a contaminated aquifer. The resulting increase in bacterial biomass results in the cometabolism of chlorinated solvents. The process allows remediation of a contaminated aquifer under aerobic conditions. | 08-08-2013 |
| 20130206685 | METHOD FOR FIXING CARBON DIOXIDE AND COMPOSITION THEREFOR - Provided is a method for biologically fixing carbon dioxide dissolved in contaminated water using a microorganism derived from rhodolith. The method includes enrichment-incubating a microorganism derived from rhodolith, and treating and reacting the enrichment-incubated microorganism in contaminated water to fix carbon dioxide dissolved in contaminated water as a carbonate mineral. The method for biologically fixing carbon dioxide has a simple fixing process and is environmentally friendly, compared with chemical carbon dioxide fixing technology. In addition, this method enables fast fixation of carbon dioxide even at room temperature, and thus can be easily applied in the industrial field, and is also useful in an aspect of resource recycling since the carbon dioxide is eventually fixed in the form of calcium carbonate. | 08-15-2013 |
| 20130256220 | In-situ method and apparatus for decontaminating sites contaminated by hydrocarbons - Contaminated brownfields are successfully and efficiently remediated by the sequential synchronized treatment of the native groundwater in the contaminated site, both mechanically and biologically, in a closed-loop system. | 10-03-2013 |
| 20130270181 | SELENIUM REMOVAL USING CHEMICAL OXIDATION AND BIOLOGICAL REDUCTION - Selenium in the form of a reduced species such as selenocyanate is oxidized to produce an oxidized selenium species such as selenate or selenite, and then a biological reduction process is used to remove selenium from the oxidized selenium species. In an example, a chemical oxidant is added to a wastewater containing selenocyanate to produce selenate and selenite. The partially treated wastewater is then fed to a reactor containing a fixed media supporting a biofilm with selenium reducing organisms. The selenium in the selenate and selenite is reduced to an insoluble form of selenium, such as elemental selenium, which precipitates from the wastewater. | 10-17-2013 |
| 20130292330 | ULTRAPURE WATER PRODUCING METHOD - In an ultrapure water producing method, a pre-treatment system treats raw water supplied from a raw water storage tank. A heat exchanger adjusts the treated water to a predetermined temperature before the water is supplied to a first bio-treatment means which is further connected to a second bio-treatment means. The second bio-treatment means is connected to a microbial body separation apparatus and, after treatments are performed in those apparatuses, the result is supplied as treated water to a primary pure water apparatus. Before the second bio-treatment means, a second supply mechanism is provided for adding a nitride source as a nutrient source and oxidizing agent (bactericidal agent). According to the ultrapure water producing method, urea in raw water can be removed to a high degree. | 11-07-2013 |
| 20130334135 | METHOD OF REMOVING RECALCITRANT ORGANIC POLLUTANTS - Recalcitrant chemical oxygen demand (COD) of a liquid is reduced in a water treatment system. The method includes pretreating the liquid in a pretreatment unit to remove indigenous bacteria or microbes to a population level below which the indigenous organisms can interfere with the screened and externally introduced microorganisms. The liquid is then provided to a reactor that has a filter bed formed with a carrier material. Special microbes are screened and used to colonize the carrier material to remove recalcitrant COD. A biofilm is cultured on the surface of the carrier material to immobilize the screened microbes in the reactor. The method further includes percolating the liquid from the pretreatment unit through the filter bed colonized with the screened microbes to degrade at least part of the recalcitrant COD under aerobic conditions. In one embodiment, the filter is formed with biological granular activated carbon (GAC) as the carrier material and the screened microbes comprise at least one microbial species selected from the group consisting of | 12-19-2013 |
| 20140083937 | CITY PARKS FOR RESOURCE RECYCLING AND GREEN REVOLUTION - A system-engineering installations for water- and energy-recycling in an aqueous system, either in or near a city, and/or in a pre-existing or a new city park, includes one by an utility company to collect carbon emissions wherein the carbon dioxide is produced by burning of high-carbon fuels or lime, one by an utility company to treat waste-water and discharge treated waste-water, a series of water-conditioners, properly space to keep the mixture of the emissions and the waste-water treatment discharges slightly acidic, a small lake or large pond as aerial-bioreactor with a sufficient depth so that the surface layer is alkaline to breed cyanobacteria, with the CO2 coming up from dissolved carbon emission and the nutrients coming up from sewage-treatment discharges in the main body below the surface layer. | 03-27-2014 |
| 20140083938 | SYSTEMS, APPARATUSES AND METHODS FOR TREATING WASTE WATER - A system of treating high nitrogen content waste water is disclosed, where the system includes a precipitation and conditioning subsystem, an ammonia stripper subsystem, and a denitrification subsystem. The system is adapted to reduce nitrogen contamination to level below about 10 ppm and in certain embodiments below 3 ppm. | 03-27-2014 |
| 20140102978 | Composition and Method for Remediation of Contaminated Water - Compositions and methods for remediation of contaminated materials, such as contaminated water, are provided. The composition may include at least one fermentable compound and at least one metal or metal containing compound to promote conversion of the contaminants into non-toxic substances through abiotic and/or biotic processes. The composition may further include sulfur or a sulfur containing compound, and/or microorganisms or derivative thereof. | 04-17-2014 |
| 20140197098 | Production of Cyanobacterial or Algal Biomass Using Chitin as a Nitrogen Source - A process of growing a culture of cyanobacteria or algae using chitin or chitosan as a source of nitrogen for photosynthetic growth is described. This process can be used to remove pollutants from nitrogen-deficient natural waters or wastewaters. Biomass that results from photosynthetic growth on chitin can be used, either as whole cells or the isolated components of the cells, for a large variety of commercial purposes. | 07-17-2014 |
| 20140217016 | BIOMEDIATION METHOD - A method for enhancing in situ bioremediation of a volume containing groundwater and a quantity of contaminant, the method comprising the steps of: quantifying the mass of the contaminant; and amending the volume by adding thereto a compound that provides a source of NO | 08-07-2014 |
| 20140263043 | S/M FOR BIOLOGICAL TREATMENT OF WASTEWATER WITH SELENIUM REMOVAL - The present invention is directed to systems and methods of treating wastewater. The present invention may include a method of treating such wastewater comprising selenium in the form of water soluble selenates, selenites, and/or selenides, the method including: a chemical/biological treatment process, causing the water soluble selenates, selenites, and/or selenides in the wastewater to be converted into insoluble elemental selenium; and a physical treatment process, trapping the insoluble elemental selenium in a filtration device. Systems and methods in accordance with the present invention may also include a system for including: one or more chemical/biological treatment reactors, the one or more chemical/biological treatment reactors configured to cause the water soluble selenates, selenites, and/or selenides in the wastewater to be converted into insoluble elemental selenium; and one or more physical treatment devices, the one more physical treatment devices configured to trap the insoluble elemental selenium in a filtration device. | 09-18-2014 |
| 20140263044 | SOLID DISSOLVER SYSTEM FOR TREATMENT OF WASTE MATERIAL - A solid dissolver system for the treatment of waste material in a waste water collection system. The solid dissolver system includes a housing. The housing includes a cover and a platform portion for receiving the cover. A cartridge containing agents for the treatment of waste material is disposed within the cover, the cover substantially surrounding and enveloping the cartridge, the cover including an opening. A water inlet is provided into the housing, the water inlet terminating at a spray means disposed proximate to or inside the cover opening, the spray means being capable of directing water at an exposed surface of the cartridge, the platform portion being capable of collecting any effluent from the water directed at the exposed surface of the cartridge by the spray means. A water outlet for channeling the effluent into a waste water collection system is included in the platform portion. The cartridge includes an inner core and an outer portion partially surrounding the inner core such that at least one surface of the inner core is exposed. The inner core has a greater water solubility than the outer portion. | 09-18-2014 |
| 20140311971 | USE OF ENCAPSULATED SUBSTRATES THAT CONTROLTHE RELEASE RATES OF ORGANIC HYDROGEN DONORS - Anaerobic reductive dechlorination processes remove chlorinated solvents from contaminated subsurface soil and ground water. The presence of organic hydrogen donors enables anaerobic microorganisms present in the subsurface soil and groundwater to accelerate the reductive dechlorination process. The present invention provides an alternative method to control the release rate of organic hydrogen donors during dechlorination. The invention utilizes encapsulated substrates to control the release rate of organic hydrogen donors, therefore accelerating the biotic process of anaerobic reductive dechlorination. | 10-23-2014 |
| 20140319054 | APPARATUS AND METHOD FOR ENHANCED WASTEWATER TREATMENT - Systems and methods for treatment of wastewater in waste processing ponds and other enclosed bodies of water are provided. An aerator are configured to include a first set of concentric air hoses disposed at a first position between the water outflow lip and the water intake, the first set of concentric air hoses being in fluid communication with an air inlet disposed at a position on the upper float chassis above the surface level of the water; and a second set of concentric air hoses disposed at a second position between the water first set of concentric air hoses and the water intake, the second set of concentric air hoses being in fluid communication with the air inlet, wherein the first set of concentric air hoses and the second set of concentric air hoses emit jets of air bubbles into the water column between the water intake and the water outflow lip. | 10-30-2014 |
| 20140332463 | REDUCTION OF HYDROGEN SULFIDE AND/OR MALODOR GASSING FROM WATER VIA THE ADDITION OF PEROXYACETIC ACID/HYDROGEN PEROXIDE PRODUCT - The invention provides methods and compositions for reducing the malodorous sulfide gas released by a wastewater treatment system. The method preserves the vitality of waste consuming organisms within the system. The method comprises the steps of: determining the SRP PAA demand of the system, determining the aerobic PAA demand of the system, and adding a composition in an amount such that it is in excess of the SRP PAA demand but is below the aerobic PAA demand. Even though the composition increases the amount of sulfates within the wastewater it reduces the amount of SRP which prevents the malodorous sulfite gas release. The composition comprises at least one percarboxyacid. | 11-13-2014 |
| 20140353247 | WATER DENITRIFICATION - The described implementations relate to water denitrification. One method obtains nitrate levels in influent and effluent of a moving bed media filter and determines carbon levels in the effluent. The method also doses carbon feedstock into the influent based on both the nitrate levels and the carbon levels. | 12-04-2014 |
| 20140367331 | Method for resourceful utilization of desorption liquid generated in the resin ion exchange process - Provided is a method for resourceful utilization of desorption liquid generated in the resin ion exchange process. This method effectively separates highly-concentrated organics and salts from the desorption liquid and puts these two components into comprehensive utilization. | 12-18-2014 |
| 20140374344 | METHOD FOR TREATING WASTEWATER CONTAINING AMMONIA NITROGEN - The present invention provides a method for treating wastewater containing ammonia nitrogen, in which an entire nitrification reaction to convert ammonia nitrogen to nitrate nitrogen via nitrite nitrogen is promoted by allowing nitrifying bacteria to perform the nitrification reaction in the presence of an intermicrobial signaling molecule. | 12-25-2014 |
| 20150034552 | Water Treatment System and Method for Removal of Contaminants Using Biological Systems - A novel biologically active water treatment system for removing contaminant from industrial effluent and method thereof is provided. A novel upflow bioreactor system having an expanded bed configuration and method for creating an expanded bed for release of gas without release of substantial precipitate is also provided. A novel downflow bioreactor system having an automated degas and backwash system is also provided. | 02-05-2015 |
| 20150034553 | WASTEWATER TREATMENT PLANT ONLINE MONITORING AND CONTROL - A method of operating a waste water treatment plant (WWTP) having at least one of an aerobic digester (AD) and a membrane bioreactor (MBR) is described. The method of operating AD is comprised of monitoring and controlling AD in real-time using an online extended Kalman filter (EKF) having a online dynamic model of AD. The EKF uses real-time AD measured data, and online dynamic model of AD to update adapted model parameters and estimate model based inferred variables for AD, which are used for AD control by AD control system having supervisory and low-level control layers. The method of operating MBR is similar to that of AD. The supervisory control ensures the WWTP satisfying the effluent quality requirement while minimize the operation cost. A WWTP having at least one of AD or MBR is disclosed. The method of operating a WWTP can be implemented using a computer. | 02-05-2015 |
| 20150041392 | METHOD AND SYSTEM USING MICRO/NANO BUBBLES FOR ENHANCED IN SITU REMEDIATION OF POLLUTED GROUNDWATER - Provided is a method using micro/nano bubbles for enhanced in situ remediation of polluted groundwater, comprising: arranging a water injection pipe ( | 02-12-2015 |
| 20150076060 | METHOD AND DEVICE FOR TREATING WASTEWATER CONTAINING TETRAMETHYLAMMONIUM HYDROXIDE AND AMMONIUM NITROGEN - A method for treating wastewater containing TMAH and ammonium nitrogen includes the steps of (a) introducing a first solution which contains ammonium nitrogen but no TMAH into a single reactor with microorganisms comprising nitrifying bacteria and anammox bacteria, and denitrifying the first solution by the microorganisms under a dissolved oxygen concentration ranging from 0.1-0.5 mg/L and a pH value of 7-8; (b) when the denitrification efficiency reaches a steady state, introducing a second solution which contains ammonium nitrogen and TMAH and has a concentration of TMAH lower than 60 mg/L into the reactor; and (c) gradually increasing the concentration of TMAH in the solution to be added into the reactor for several times whenever the denitrification efficiency reaches a steady state. Accordingly, the inhibition of TMAH to the anammox bacteria can be significantly decreased, and both TMAH and the ammonium nitrogen can be treated simultaneously. | 03-19-2015 |
| 20150108066 | DENITRIFICATION BIOFILTER DEVICE AND METHOD FOR TREATING WASTEWATER - A denitrification biofilter device, including: a regulating pool, a reactor body, a water tank, a first doser, a second doser, a backwash pump, a water inlet pump, and a blower. The regulating pool includes a raw water inlet and a water outlet. The reactor body includes a uniform water distributor, a filler layer, a buffer layer, a filter layer, a supporting layer, a filler supporting plate, a backwash water outlet, a treated water outlet, and a backwash water inlet. The treated water outlet and the backwash water inlet are disposed at the bottom of the reactor body and are connected to the water tank via pipes. The filler layer is filled with zeolites having a grain size of between 4 and 8 mm, a density of between 1.9 and 2.6 g/cm | 04-23-2015 |
| 20150108067 | REDUCTION OF SUBSTANCES IN CONTAMINATED FLUIDS USING A NATURALLY OCCURRING BIOLOGICAL GROWTH MEDIA - A treatment process for municipal, commercial, industrial, and institutional fluids containing one or more substances at a first concentration includes a contactor, an aerator, and a separator. The fluid is mixed with a powdered natural lignocellulosic material (“PNLM”), a microbial growth inoculum, and at least a portion of the fluid in the contactor to provide a mixture that includes an established, acclimated microbial growth in the fluid. The mixture is introduced to an aerator where physical binding and chemical bonding of at least some of the one or more substances to the PNLM additionally physiological uptake by microbial growth in a biosludge reduces the concentration of at least some of the one or more substances in the fluid discharged from the aerator to a second concentration. The biosludge is separated to recover at least a portion of the PNLM that is recycled to the contactor. | 04-23-2015 |
| 20150122730 | OXYGEN TREATMENT OF WATER AND PULP FROM PAPER OR CARDBOARD PRODUCTION - Methods for seating water and gulp used in a paper or cardboard manufacturing process. Oxygen and nutrients are added to the water or pulp to increase the activity of aerobic bacteria resulting in a reduction of organic substances such as fatty acids. Alternatively oxygen alone is added to the water or pulp to reduce all both aerobic and anaerobic bacterial activity. | 05-07-2015 |
| 20150291461 | INOCULANT FOR WATER TREATMENT DEVICE - The invention provides inoculants for the generation of a biologically active layer in a water treatment or purification device. In some embodiments, the invention provides inoculants for a biologically active zone in a wastewater treatment system or device, for example in municipal wastewater and sewage treatment. In other aspects, the invention provides inoculants for water purification, for example in municipal drinking water purification or in slow sand filtration. Inoculants of the invention increase the effectiveness of the above systems and devices in providing useable water. | 10-15-2015 |
| 20150329394 | USE OF ACTIVATED CARBON IN A MEMBRANE BIOREACTOR - A membrane bioreactor (MBR) has membranes comprising a supporting structure. A supply unit doses a sorbent such as powdered activated carbon (PAC) into the MBR. The PAC is maintained at a concentration in the mixed liquor of 200 mg/L or more. Mixed liquor with the sorbent particles recirculates within the MBR at a flow rate of at least twice the feed flow rate. Air bubbles are provided to scour the membranes including during at least part of a permeation step. The sorbent particles are present in the mixed liquor and contact the membranes. Bioaugmentation products may be immobilized on PAC or other carriers and then added to an MBR or other bioreactors. | 11-19-2015 |
| 20150336827 | BIOFILM MEDIA, TREATMENT SYSTEM AND METHOD OF WASTEWATER TREATMENT - Described herein are systems and methods for treatment of contaminated water employing a mobile supported biofilm. The treatment systems include a bioreactor, a mobile biofilm disposed within the bioreactor, and a solid-solid separation unit attached to the bioreactor. The solid-solid separation unit is adapted to receive an effluent stream from the bioreactor, wherein the effluent contains the mobile biofilm, and separate at least a portion of the mobile biofilm from the effluent and return it to the bioreactor. | 11-26-2015 |
| 20150336828 | Method for Improving Quality of Aquaculture Pond Water - A method for treating and improving the quality of pond water used in growing aquatic species for aquacultural applications by adding to the pond water active bacteria that are preferably grown on site in combination with a nitrification enhancement agent such as calcium carbonate or calcified seaweed, and an optional reaction surface area modifier such as calcified seaweed or plastic or metal particles or fragments. | 11-26-2015 |
| 20150368130 | PROCESS FOR PURIFICATION TREATMENT OF WASTEWATER AND APPARATUS FOR PURIFICATION TREATMENT OF WASTEWATER - A process for purification treatment of wastewater according to the present invention is a process for conducting a purification treatment of wastewater containing polyvinyl alcohol by using a membrane bioreactor process, the process including adding a nutrient to a treatment system. The nutrient is preferably added to an aeration tank. The nutrient preferably contains nitrogen. An amount of the nutrient initially added is preferably 5% or more and 25% or less in terms of nitrogen. The process for purification treatment of wastewater preferably includes a step of measuring a nitrogen content after a treatment, and an amount of the nutrient added is preferably adjusted on the basis of the result of this measurement while checking the effect on the basis of a chemical oxygen demand. The nutrient may be added to the aeration tank by a mechanism that adds the nutrient to the treatment system or by feeding the nutrient manually to the treatment system. | 12-24-2015 |
| 20160002119 | BIOREMEDIATION OF SURFACE WATER OIL SPILLS - A process for bioremediating a surface water oil spill includes mixing organic fertilizer with a floatable material selected from saw dust, wood shavings, and a combination thereof to produce a floatable bacterial nutrient, and applying the floatable bacterial nutrient onto an oil spill-impacted water surface. Hydrocarbon-digesting microbes can be added to the floatable bacterial nutrient. | 01-07-2016 |
| 20160039693 | IMPROVED WASTEWATER TREATMENT SYSTEMS AND METHODS - The present invention relates to improved wastewater treatment systems and methods. In one embodiment, the present invention utilizes biologics and the final effluent of the treated wastewater is remarkably clean, and has low levels of hazardous chemicals, unwanted nutrient values and/or total solids. Advantageously, the wastewater treatment system and method of the present invention reduces the use of chemical compounds in the treatment process. Further, valuable biomasses can be produced or metals recovered from the wastewater using the treatment process of the present invention. | 02-11-2016 |
| 20160152498 | NEW HYBRID BIODEGRADABLE POLYMER FOR EFFICIENT NITROGEN AND PHOSPHATE REDUCTION | 06-02-2016 |
| 20160194228 | BIOLOGICAL PURIFIER FOR UNTREATED WASTE WATER AND METHOD OF PRODUCING THE SAME, BIOLOGICAL PURIFICATION METHOD FOR UNTREATED WASTE WATER, AND BIOLOGICAL PURIFICATION SYSTEM FOR UNTREATED WASTE WATER | 07-07-2016 |
| 20170233272 | Method and Apparatus for Selenium Removal from High TDS Wastewater | 08-17-2017 |
