Class / Patent application number | Description | Number of patent applications / Date published |
210709000 | Controlling process in response to stream condition | 44 |
20080245742 | Wastewater Treatment Method and Wastewater Treatment System - Even if arsenic-containing wastewater includes an oxidizing substance, the arsenic can be reliably removed as a precipitate. A wastewater treatment method includes a preparation step (S | 10-09-2008 |
20080251463 | System for Removing Oil From a Water Surface - Disclosed is a skimming system for removing a floating layer from a water surface. The skimming system comprises at least one guide element that is movable relative to the floating layer, which guide element is provided with at least one unit that catches the floating layer The at least one removal unit is provided with at least one collecting container that is detachably attached to the guide element. The collecting container is furthermore vertically adjustable, so that it is not only easy to detach and exchange the collecting container but that it is moreover possible to position the floating layer removal means at a desired depth in or below the floating layer. In this way an optimum removal of the floating layer can be realised. The inlet of the collecting container is present at a location where the extent to which water is mixed with the floating layer is minimal. | 10-16-2008 |
20080257826 | Fluidized Bed Wastewater Treatment - A fluidized bed reactor ( | 10-23-2008 |
20090020480 | DEGASSING METHOD AND APPARATUS FOR SEPARATING GAS FROM LIQUIDS AND POSSIBLY SOLIDS - A degasser having a flapper opening including a hinge. The hinge may permit purging of any liquids and solids without regular human intervention. There may be a fixed opening at the base of the degasser, such that there is a constant emptying from the bottom of the tank. The separation of gas from liquid may be involved in applications pertaining to pulping and oxygen delignification. | 01-22-2009 |
20090050570 | Plant and Method for Water Treatment by Flocculation/Settling Using Ballasted Floc Degritting of the Sludge - A method for treating water includes directing untreated water into a mixing zone in a water treatment system and mixing the untreated water with a flocculating agent and a ballast to form a ballast-floc mixture. Thereafter, the ballast-floc mixture is directed to a settling zone where the mixture settles to form sludge. Treated water is discharged from the settling zone and the sludge is directed to a separator. The method further includes separating at least a portion of the ballast from the sludge and directing the separated ballast from the separator to the mixing zone. Finally, the sludge is directed from the separator to a sludge treatment reactor where at least some of the remaining ballast settles from the sludge and substantially ballast-free sludge is discharged from the sludge treatment reactor. | 02-26-2009 |
20090057235 | SLUDGE THICKENING DEVICE AND SLUDGE THICKENING METHOD - A differential rate rotary thickener; a power detector which is disposed in a sludge receiver tank for thickened sludge thickened in the differential rate rotary thickener; a discriminator which receives an electric signal for a thickened sludge concentration (X) detected by the power detector and which calculates and discriminate the data; a first controller which receives an instruction signal being a discriminated result in the discriminator and which operates an outer cylinder driving machine and a screw driving machine; a ratio setter which receives a discriminated signal of the discriminator and which increases or decreases a chemical feed rate (α) of flocculant stepwise; and a second controller which receives an instruction signal from the ratio setter and which operates a flocculant-feeding pump are provided. Thickening of sludge is performed by controlling the chemical feed rate (α), a rotational speed (S) of a screw, and a rotational speed (C) of an outer cylinder screen. | 03-05-2009 |
20090255876 | FEEDBACK CONTROL SCHEME FOR OPTIMIZING DEWATERING PROCESSES - A method and apparatus for dewatering of effluents through the use of automated optimization using feedback control. The method and apparatus for feedback control optimizes dewatering processes for any water cleansing process that uses retention and/or flocculation aids (e.g., polymers) to impact endpoint water clarity. Disclosed implementations include processing using dissolved air flotation (DAF) and sludge cake formation. The methodology includes real-time monitoring of turbidity and incremental control of polymer to manage changes to turbidity/suspended solids due to operating parameters such as temperature, chemical variations, and mechanical influences. | 10-15-2009 |
20090308815 | Method of Treating Water by Ballasted Flocculation/Settling, Which Includes a Continuous Measurement of the Ballast, and Corresponding Installation - A method for treating water in a ballasted flocculation system comprises directing water into a ballasted flocculation zone and adding ballast and a flocculation reagent to the water to form a water-floc mixture. The water-floc mixture is directed into a settling zone to form treated water and sludge containing ballast. The ballast is then directed to a recirculation line where the ballast is recirculated to the ballasted flocculation zone. The method further includes determining the ballast concentration and comparing the ballast concentration with a predetermined threshold value. The rate at which ballast is recirculated to the ballasted flocculation zone is adjusted based on the determined ballast concentration and the predetermined threshold value. A ballasted flocculation system for treating water comprises a ballasted flocculation zone, a water inlet for directing water into the ballasted flocculation zone, and a flocculation reagent inlet for directing flocculation reagent into the ballasted flocculation zone. The system includes a settling zone for separating treated water from sludge containing ballast and a recirculation line for recirculating ballast from the settling zone to the ballasted flocculation zone. A first ballast inlet is operatively connected to the recirculation line for directing ballast into the ballasted flocculation zone. Finally, the system includes a sensor for measuring a parameter of ballast in the system. | 12-17-2009 |
20100038318 | ENHANCED SOLIDS CONTROL - A method of cleaning drilling fluid including providing a flow of drilling fluid to a treatment loop, determining a flow rate of the drilling fluid, and injecting a polymer into the drilling fluid based on the determined flow rate of the drilling fluid. Additionally, the method includes injecting a coagulant into the drilling fluid based on the determined flow rate of the drilling fluid and adjusting the rate of polymer and coagulant injection based on a change in the flow rate of the drilling fluid. Also, a method of controlling a drilling fluid cleaning system, the method including inputting a polymer dosage rate and a coagulant dosage rate into a system controller and providing instructions to the system controller. The instructions include determining an instantaneous flow rate of a drilling fluid in the system, calculating a polymer injection rate to produce the inputted polymer dosage rate based on the instantaneous flow rate of the drilling fluid, calculating a coagulant injection rate to produce the inputted coagulant dosage rate based on the instantaneous flow rate of the drilling fluid, and adjusting the polymer injection rate and the coagulant injection rate based on the instantaneous flow rate. | 02-18-2010 |
20100096335 | Water Treatment Process and Plant Using Ballasted Flocculation and Settling - A method for treating wastewater using a ballasted flocculation technique includes continuously measuring the concentration of suspended solids, organic matter or other impurities in the water to be treated prior to directing the water to be treated to a flocculation tank. Based on this measurement, the amount of ballast necessary to obtain treated water of a predetermined quality is then calculated. In the flocculation tank, ballast and a flocculating reagent are added to the water to form a water-floc mixture. The water-floc mixture is directed to a settling tank where a sludge-ballast mixture is settled. The sludge-ballast mixture is directed to a mixing tank and then to a separator to separate the ballast from the sludge. The separated ballast is directed to the flocculation tank. The separated sludge is directed to the mixing tank when the level of sludge-ballast mixture in the mixing tank is lower than a predetermined level. | 04-22-2010 |
20100102005 | DEWATERING FACILITY - The present invention relates to a device, for dewatering dredged material with a dry substance rate below 15%, comprising a tank ( | 04-29-2010 |
20100126937 | WET AIR OXIDATION PROCESS USING RECYCLED CATALYST - A system and method for the treatment of process streams. A catalyst mediates a wet oxidation process at elevated temperatures and pressures for treating at least one undesirable constituent in an aqueous mixture. The aqueous mixture may be contacted with a catalyst and an oxidizing agent at an elevated temperature and a superatmospheric pressure. At least a portion of the catalyst may be precipitated by a pH adjustment and recycled back to contact the aqueous mixture | 05-27-2010 |
20100133199 | Method of Flocculating Sedimentation Treatment - A coagulation sedimentation process for water to be treated in which an inorganic coagulant used in a purified water treatment system is limited, and remaining micro flocks and flocks are made greater in density and finer in particle size, thus obtaining clear water better in quality and reducing the amount of sludge production, including a micro flocculation step for micro-flocculating in advance fine suspended particles in water to be treated, a flocculation step for the micro flocks, and a sedimentation separation step for the flocks, in which as a final stage of the flocculation step, a flock-forming inclined plate whose pitch width is from 5 mm or more to 50 mm or less is provided, and an inorganic coagulant is limited so that the turbidity of the water to be treated after passage of the inclined plate at a ratio to that before passage is 4/5 or less. | 06-03-2010 |
20100213137 | SLUDGE THICKENING DEVICE AND SLUDGE THICKENING METHOD - [Solving Means] A differential rate rotary thickener; a power detector which is disposed in a sludge receiver tank for thickened sludge thickened in the differential rate rotary thickener; a discriminator which receives an electric signal for a thickened sludge concentration detected by the power detector and which calculates and discriminate the data; a first controller which receives an instruction signal being a discriminated result in the discriminator and which operates an outer cylinder driving machine and a screw driving machine; a ratio setter which receives a discriminated signal of the discriminator and which increases or decreases a chemical feed rate of flocculant stepwise; and a second controller which receives an instruction signal from the ratio setter and which operates a flocculant-feeding pump are provided. Thickening of sludge is performed by controlling the chemical feed rate, a rotational speed of a screw, and a rotational speed of an outer cylinder screen. | 08-26-2010 |
20100243575 | Portable sludge filtration system - A separation apparatus and system for separating a solid-liquid mixture is described herein. A polymer solution, formed from water and one or more polymers, is mixed, then combined with a solid-liquid mixture to flocculate the solid-liquid mixture, which is then flowed into the separation apparatus. A liquid-permeable filtration member is disposed over the floor, one or more exterior walls, and any interior dividing walls, if present, for retaining solid media within the apparatus while permitting liquid to pass. A controllable distribution system having a plurality of individually actuatable inlets oriented to provide the solid-liquid mixture to discrete areas of the apparatus is usable to selectively maximize the efficiency of the separation process. A support structure can be mounted on one or more of the walls to enable visual observation of the separation process. Control means for the inlets can be accessible from the support structure to enable contemporaneous control of the distribution of the solid-liquid mixture responsive to visual observations. | 09-30-2010 |
20100282686 | Method for the treatment of acid mine drainage - A process for neutralizing acid mine drainage which includes a neutralizer and binder component consisting of steel slag in an amount of 75% to 95% by weight of the agglomeration, a sodium carbonate selected from the group consisting of soda ash and pulp liquor in an amount of 0.5% to 25% of the agglomeration, and, optionally, a lime component selected from the group consisting of limestone sand and slag. Further included is a dissolution control and filtration component consisting of an organic material in an amount of 0.24% to 15% by weight of the agglomeration selected from the group consisting of recycled newsprint, sphagnum peat moss, and sawdust. Next is a dispersant and neutralizer component consisting of a surfactant in an amount of 0.01% to 0.075% by weight of the agglomeration. The agglomeration may further comprise an oxidation component such as calcium peroxide, potassium permanganate, and hydrogen peroxide. | 11-11-2010 |
20100314325 | SPIRAL MIXER FOR FLOC CONDITIONING - A system and method for treatment of water. An inlet is operative to receive source water having particles therein. A spiral mixer has a defined spiral channel operative to mix the source water with a coagulant material and an alkalinity material. The spiral mixer is formed to perform in-line coagulation and flocculation processes within the defined spiral channel to form aggregated floc particles. A buffer tank is operative to receive the aggregated floc particles from the spiral mixer. Spiral separator segregates contents of the buffer tank into affluent and waste water that has the aggregated floc particles therein. An outlet is operative to provide a first path for the affluent, and a second path for the waste water having the aggregated floc particles. | 12-16-2010 |
20110108489 | INTEGRAL ELECTROLYTIC TREATMENT UNIT - An electrolytic filtration system incorporating a filter vessel and an electrolytic element into a simple compact system which avoids the use of toxic chemicals and eliminates the need for large reservoirs to ensure adequate contact time to remove iron and other problem contaminants. The electrolytic filtration system includes a filter head having a control valve and an electrolytic generator. The control valve directs flow through the filter vessel and allows for an intermittent backwash cycle as desired. The electrolytic generator can be integrated into the filter head to provide ease of installation and reduce the overall footprint of the electrolytic filtration system. The electrolytic generator can include a flow sensor and power supply to provide for control of the electrolytic generator. | 05-12-2011 |
20110139723 | DISPOSABLE FLUID PATH SYSTEMS AND METHODS FOR PROCESSING COMPLEX BIOLOGICAL MATERIALS - Disclosed herein is a disposable fluid path for processing complex materials. The disposable fluid path comprises a gravity assisted disposable system for separating a biological sample into two or more distinct submaterials through sedimentation. The fluid path is comprised of a sample delivery conduit and bag-set wherein the bag set comprising a tubing assembly, a separation assembly, and a filter assembly. Methods of using the system are also disclosed. | 06-16-2011 |
20110163041 | METHOD FOR CONTROLLING THE DISTURBANCE OF NETWORKED PULP - The invention provides a method ( | 07-07-2011 |
20110266227 | APPARATUS FOR DETERMINING COAGULANT AMOUNT - Provided are a method and an apparatus that enable rapid and automatic determination of the coagulant injection rate in a process of water treatment through coagulation and sedimentation. Using a coagulation analyzer comprising sample tanks | 11-03-2011 |
20120037568 | CONTROLLED METHOD OF MINIMIZING RADIOACTIVE SLUDGE GENERATION IN POST STIMULATION FLOWBACK AND/OR PRODUCED WATER TREATMENT FROM A SALTWATER, OIL AND/OR GAS WELL - Disclosed herein is a controlled method of minimizing radioactive sludge generation in treatment of wastewater from an oil and/or gas well. The method comprises measuring a concentration of a radioactive material in wastewater to be treated and measuring a concentration of barium in the wastewater to be treated. The method further comprises adding a calculated quantity of sulfate to the wastewater to be treated sufficient to precipitate a quantity of barium sufficient to reduce the concentration of the radioactive material to a level such that sludge precipitated in a secondary precipitation has a radiation level below a defined radiation level. | 02-16-2012 |
20120160776 | STIMULANT SENSITIVE FLOCCULATION AND CONSOLIDATION - The present invention relates to methods for the separation of materials from heterogeneous fluids and provides a means of effecting stimulant-sensitive flocculation and consolidation of solid suspensions within a liquid medium. Specifically, the present invention provides a method of controlling the state of a suspension of solid particles in a liquid, including applying to the suspension a stimulus adapted to control inter-particle forces between the solid particles. The stimulus is reversibly operable to control attraction and/or repulsion. Means of consolidating a sediment bed and of separating the resultant liquids-rich and solids-rich phases are also within the ambit of the invention. | 06-28-2012 |
20120241386 | MULTI-FUNCTION WATER TREATMENT - The present invention relates to processes, methods, apparatuses, and systems for multi-function water treatment to condition feed water from various sources. The multi-function treatment includes seven stages, where the chemical content of the entered feed water is conditioned, then broken, then oxidized, then de-foamed, then clarified, then de-scaled, and then filtered via each stage. | 09-27-2012 |
20120292257 | APPARATUS AND METHOD FOR COLLECTING AND TREATING WASTE - Devices and methods for collecting and treating waste materials. One implementation of the present invention includes a mobile apparatus that continuously collects a waste material and continuously treats the waste material so that it is suitable for disposal, transportation, or reuse at a desired location. Such an apparatus may include a delivery mechanism that delivers a waste material to a motor driven mixing unit at a selectable rate. This delivery mechanism may include a pump or a motor driven blower and separator. The mixing unit may be configured to receive a treating material and to mix the waste material with the treating material. Advantageously, the delivery mechanism and the mixing unit are positioned together on a portable unit (e.g., a trailer, a barge, a railroad car, etc.) so that the apparatus is mobile and portable. | 11-22-2012 |
20130001171 | Process for controlling hardness in open recirculating systems - A process and system are provided for controlling hardness in recirculated cooling water, wherein chemical addition is independent of pH determination. Hardness is determined in a make-up water stream provided to a cooling water system. Chelant is continuously added to the make-up water stream, the amount of chelant being a function of the make-up water hardness. A side stream is circulated from the cooling water system to a reactor. A conditioner is added to the reactor based on the amount of chelant. The conditioned side stream is retained within the reactor to precipitate a percentage of suspended solids, and a portion of the precipitated solids are removed as necessary to maintain a fluid bed level. A clarified water stream is withdrawn from the reactor and returned to the cooling water system circulation. A chelant concentration of from 600 to 800 ppm is maintained in the system. | 01-03-2013 |
20130008856 | Method For Controlling Solids/Liquid Decant Unit Operations And Systems - Provided are methods for dewatering a slurry from the leaching of a valuable ore with an aqueous solution of an effective leaching agent via a solids/liquid decantation system, providing an overflow depleted from solids and an underflow rich in solids that is washed counter-current through a number of solids/liquid decantation stages, the improvement implementing into the process line
| 01-10-2013 |
20130062288 | PROGRAMMABLE FLUID TREATMENT SYSTEM AND METHOD - A programmable fluid treatment system including a mechanical subsystem and a computer control subsystem where the mechanical subsystem includes a fluid collection sump for capturing a fluid medium, a chemical mixing tank for injecting engineered chemicals into the fluid medium for separating a plurality of targeted compounds, an air flotation tank for creating a floating agglomeration of targeted compounds and engineered chemicals for mechanical removal, the computer control subsystem including a control unit for continuously monitoring a plurality of sensed parameters, a computer for continuously to comparing the sensed parameters with pre-programmed input data for continuously generating correction signals fed back to the mechanical subsystem via the control unit for maintaining the sensed parameters within limitations set by regulation, and for continuously adjusting and realtime reporting to regulators, the operation of the mechanical subsystem including the engineered chemicals in accordance with a dynamic concentration of the is targeted compounds. | 03-14-2013 |
20130213895 | WASTEWATER TREATMENT SYSTEM - A system for treating a wastewater stream produces an effluent having an acceptable level of turbidity. A PID controller is operatively coupled to at least one turbidity meter for monitoring turbidity of the effluent stream. A plurality of chemical treatment additive pumps are provided for adding a plurality of treatment chemicals to the wastewater stream in real time under supervision of the controller, and responsive to monitored turbidity. | 08-22-2013 |
20130233804 | APPLICATION OF FLUORESCENT DYES TO TRACE AND QUANTIFY CHEMICAL DOSAGE IN INDUSTRIAL WASTEWATER - Disclosed are methods and chemicals that can be used as fluorescent tracers in the treatment of raw water and/or industrial wastewater. The fluorescent tracers are certain chemicals discovered to have beneficial properties for such uses, particularly having little variance in fluorescence emission for conditions that are known to interfere with fluorescence emission. The fluorescent tracers comprise rhodamine dyes. | 09-12-2013 |
20140014588 | METHOD FOR DEWATERING SLUDGE - The present invention relates to a method for dewatering of sludge, wherein an aqueous solution of polymeric flocculating agent is added to the sludge, wherein the sludge comprises a component to be removed by the flocculating agent being added to the sludge, wherein in order to limit the residual amount of the flocculating agent in a filtrate of the sludge the method comprises a first and/or a second step, wherein the first step comprises—measuring a first content information related to the total amount of solid material in the sludge (organic and inorganic)—measuring a second content information related to a sand material content in the sludge, wherein the first and second content information is used for controlling the addition of the aqueous solution of the polymeric flocculating agent to the sludge, wherein the second step comprises measuring a material information related to a material property of the filtrate, wherein the material information is used for controlling the content of the polymeric flocculating agent in the filtrate. | 01-16-2014 |
20140034582 | System and Method for lime Stabilization of Liquid Sludge - A lime stabilization system and method is provided in which thickened liquid sludge and lime are separately delivered, under controlled conditions, to a reaction tank and mixed therein to a predetermined pH, controlled via a programmable logic computer. The weight of liquid sludge in the reaction tank is controlled from the computer via load cells that measure the weight of such liquid sludge in the reaction tank. The computer monitors the amount of liquid sludge and lime delivered to the reaction tank, for mixing therein to a desired pH, for a predetermined amount of time, and the resultant mix is discharged from the reaction tank, to a holding tank, for return to the land. | 02-06-2014 |
20140054230 | METHOD FOR MONITORING AND CONTROLLING THE CHEMISTRY OF A ZLD PROCESS IN POWER PLANTS - A method for monitoring and controlling the chemistry of a Zero Liquid Discharge (ZLD) process in power plants is described. The method identifies the principal phenomena of precipitation of calcium sulphate and calcium carbonate which can occur in such system and the principal critical sections affected by such precipitation phenomena. The interventions aimed at keeping or restoring the sustainable chemical conditions with respect to the precipitation of calcium sulphate and calcium carbonate in all the critical sections of the ZLD system are then indicated, ensuring saturation ratios of calcium sulphate and calcium carbonate lower than or equal to 1 through time. | 02-27-2014 |
20140263079 | Wastewater Treatment System and Method - The present invention relates to systems and methods of wastewater treatment that rely primarily on the use of water treatment chemicals to clean wastewater without the need to use filtration mechanisms. The present invention generally provides a system that is less complex and less expensive to operate than wastewater treatment systems in the prior art. | 09-18-2014 |
20150014254 | Method and System for Cleaning Degraded Oil - A Method for cleaning degraded oil comprising oil-soluble degradation products and a system for implementing the method are disclosed. The method comprises the steps of receiving an inlet flow ( | 01-15-2015 |
20150021273 | PRODUCED WATER TREATMENT IN OIL RECOVERY - An oil recovery process that utilizes one or more filtration medium comprises a filter cake and a second filtration medium being nonwovens sheet to remove silica and/or oil and/or dissolved organics and/or dissolved solids from produced water which includes separating oil from the produced water and precipitating silica into particles and wherein the produced water having the precipitated silica is directed to a filtration medium which operates in a direct flow filtration mode and removes the precipitated silica from the produced water to form a filtrate stream. | 01-22-2015 |
20150060367 | COAGULATION PROCESSING METHOD, COAGULATION PROCESSING UNIT, AND WATER PROCESSING APPARATUS - The present invention provides a coagulation processing method capable of adding a sufficiently-dissolved coagulant aqueous solution to being processed water and materializing high-efficiency coagulation processing, a coagulation processing unit, and a water processing apparatus. | 03-05-2015 |
20150068981 | MEASUREMENT OF TREATMENT AGENT IN A PROCESS STREAM USING ULTRAVIOLET-VISIBLE (UV-VIS) SPECTROSCOPY, AND RELATED SYSTEMS AND PROCESSES - The present application provides a method of detecting an amount of a treatment agent, such as a flocculating agent, in a process stream comprising the step of measuring at least one absorption property of a sample obtained from the process stream at a wavelength of less than about 250 nm. Processes and systems for monitoring and regulating addition of treatment agents to process streams are also provided. | 03-12-2015 |
20150144571 | DISPERSION AND CONDITIONING TECHNIQUES FOR THICK FINE TAILINGS DEWATERING OPERATIONS - Techniques are described that relate to enhancing flocculation and dewatering of thick fine tailings, for example by reducing process oscillations. One example method includes dispersing a flocculant into thick fine tailings having a turbulent flow regime to produce turbulent flocculating tailings; subjecting the turbulent flocculating tailings to shear to build up flocs and increase yield stress, to produce a flocculated material having a non-turbulent flow regime; and shear conditioning the flocculated material to decrease the yield stress and produce conditioned flocculated tailings within a water release zone; and dewatering the conditioned flocculated tailings, for example by employing sub-aerial deposition. The thick fine tailings may have a Bingham Reynolds Number of at least 40,000 upon flocculant addition. Inhibiting process oscillations may include providing turbulent tailings feed, configuring a downstream pipeline assembly to reduce backpressure fluctuations and/or reducing air content in the flocculant solution, for example. | 05-28-2015 |
20150299005 | ACHIEVING WATER RELEASE ZONE FOR DEWATERING THICK FINE TAILINGS BASED ON SHEARING PARAMETER SUCH AS CAMP NUMBER - Various techniques are provided in relation to flocculation and/or dewatering of thick fine tailings, with shear conditioning of flocculated tailings material in accordance with a pre-determined shearing parameter, such as the Camp Number. One example method of treating thick fine tailings including dispersing a flocculant into the thick fine tailings to form a flocculating mixture; shearing the flocculating mixture to increase yield stress and produce a flocculated mixture; shear conditioning the flocculated mixture to decrease the yield stress and break down flocs, the shear conditioning being performed in accordance with the pre-determined shearing parameter to produce conditioned flocculated material within a water release zone where release water separates from the conditioned flocculated material. The conditioned flocculated material can then be subjected to dewatering, for example by depositing, thickening or filtering. The design, construction and/or operation of a flocculation pipeline assembly can be facilitated. | 10-22-2015 |
20160009576 | METHOD TO OPTIMISE THE CHEMICAL PRECIPITATIONS PROCESS IN A WATER- OR WASTE WATER TREATMENT PLANTS | 01-14-2016 |
20160068414 | ADDITION OF ALUMINUM REAGENTS TO OXOANION-CONTAINING WATER STREAMS - The removal of oxoanions from an aqueous stream having a concentration of a metal cation and a concentration of an oxoanion that varies over time may involve continuously monitoring the concentration of the metal cation and the concentration of the oxoanion to provide a current metal cation concentration and a current oxoanion concentration. A metal cation source and an aluminum reagent may be added to the aqueous stream based on the measured current metal cation concentration and the current oxoanion concentration. The amount of the metal cation source and the aluminum reagent added to the stream may be effective to reduce the concentration of the oxoanion in the aqueous stream below a target threshold. | 03-10-2016 |
20160107900 | SYSTEM AND METHOD FOR TREATING CONTAMINATED WATER - A system and method for treating contaminated water are provided. The system can include one or more collecting basins for collecting water, such as rain water, runoff water, etc. The system can further include one or more containment basins, one or more polishing basins, and a pumping system for moving water through the system. The containment basins and polishing basins can utilize techniques for reducing a contaminant concentration in the water. The system can further include a source for adding process water to the system and combining it with the collected water to form a system water in order to reduce a contaminant concentration in the system water and accommodate higher volumes of collected water and/or higher pollutant concentrations therein. The system can also include an ultraviolet emitting device and/or a heating device for reducing the level of living bacteria in the system water. | 04-21-2016 |
20160376166 | Process and Device for the Treatment of a Fluid Containing a Contaminant - In one of its aspects, the invention relates to a process to optimize the dose of a treatment agent for the treatment of a fluid comprising a contaminant. In this first aspect the process comprises the steps of: (a) calculating the dose of the treatment agent based on the relationship between concentration of the treatment agent at one or more points and residence time distribution of the treatment system, and (b) contacting the fluid with the treatment agent in the concentration required to meet the dose calculated in step (a). In another one of its aspects, the invention relates to a process to optimize the dose of a treatment agent for reduction of a contaminant in a fluid. | 12-29-2016 |