Class / Patent application number | Description | Number of patent applications / Date published |
210631000 | And additional treating agent other than mere mechanical manipulation (e.g., chemical, sorption, etc.) | 76 |
20080197074 | METHOD OF AND SYSTEM FOR SUPPORTING DENITRIFICATION - A method of supporting denitrification includes receiving biological material at a pulsed electric field station and applying a pulsed electric field to the biological material within a treatment zone in the pulse electric field station to generate treated biological material. The method also includes transporting at least a portion of the treated biological material to an anoxic bioreactor in substitution, at least in part, for an external source of electron donor. A system for supporting denitrification is also provided. | 08-21-2008 |
20080272051 | Compositions and Uses Thereof in Bioremediation - Compositions for bioremediation are described. Systems and methods of using the compositions are also disclosed. | 11-06-2008 |
20080302723 | LOW PHOSPHOROUS WATER TREATMENT METHODS AND SYSTEMS - A water or wastewater treatment system to reduce phosphorous or other pollutant concentrations in water or wastewater may include an optional primary treatment stage in fluid communication with a biological secondary treatment stage. The secondary treatment stage may, in turn, be fluidly connected with a tertiary treatment stage, which may include a chemical treatment portion for reducing phosphorous or other pollutants to desired levels. The precipitated phosphorous and other solids or sludge produced from the chemical treatment portion may be recycled upstream for reuse in the primary, secondary, and/or tertiary treatment stages. Such recycle may reduce the amount of added chemicals required in the tertiary treatment stage to phosphorous or other pollutants to desired amounts. | 12-11-2008 |
20080314830 | Method of Removing Phosphorus from Wastewater - A process for removing phosphorus from wastewater wherein an iron or aluminum salt is added to the wastewater. The iron or aluminum salt results in the precipitation of certain iron or aluminum species that include phosphorus adsorption sites. These iron or phosphorus species are settled and become a part of sludge produced in the course of the wastewater treatment process. By recycling substantial portions of the sludge, the concentration of these iron or aluminum species in the wastewater is increased. This increased concentration results in the presence of large quantities of unused phosphorus adsorption sites that attract and adsorb phosphorus, resulting in phosphorus being removed from the wastewater. | 12-25-2008 |
20090045135 | Method for water filtration - This is a method of filtration of a liquid comprising steps of sequential filtration of said liquid through at least one deep bed medium producing at least one first filtrate followed by at least one membrane medium filtration producing at least one second filtrate, wherein said membrane medium is at least periodically within said deep bed media Many types of deep bed and membrane media can be used. The domain of using contact clarification (direct filtration) can be expanded towards greater solids concentration. Operation and backwash, is simplified, continuous filtration becomes possible. Water can be water from natural source water, process water, wastewater, aqueous or non-aqueous suspensions, emulsions, solutions. Treatment can include mechanical interception of suspended particles, chemical, physical chemical, electrochemical, and biological processes. In water and wastewater processing, control over suspended solids, BOD, COD, nitrogen and phosphorus compounds, bacteria and viruses, heavy metals, color, and other constituents can be dramatically improved as compared to conventional processes. The method can be accommodated in new and modified existing treatment systems. | 02-19-2009 |
20090101574 | METHOD OF TREATING WATER USING PETROLEUM COKE - A process for treating water containing dissolved organics, for example, oil sands process-affected water, using petroleum coke is provided, comprising: removing petroleum coke from a coking operation; forming a petroleum coke/water slurry by adding the water to be treated to the petroleum coke; and mixing the slurry for a sufficient time in a carbon adsorption reactor to allow the petroleum coke to adsorb a substantial portion of the dissolved organics from the water. | 04-23-2009 |
20090120872 | COMPOSITION AND BIOREMEDIATION METHOD FOR WATER POLLUTED BY HYDROCARBONS - The invention relates to a novel composition and a novel method for the in situ bioremediation of water polluted by hydrocarbons, in particular oil. To remove, for example, an oil slick that is floating on the surface of a body of water, the new composition can be dispersed in powder form over said oil slick. The inventive composition binds spontaneously with the oil, sinking together with the latter below the surface of the water to finally settle as a fine sediment on the bottom. Within a few hours the toxic hydrocarbons have been eliminated from the water, in such a way that in the case of freshwater, drinking-water quality can be restored. The microbiological degradation takes place in situ. The composition contains silicon carbide and/or silicon dioxide in powder form and preferably additives including granite dust, silica-lime dust and calcium. Said new composition permits a simple, cost-effective bioremediation of oil pollution on the surface of bodies of water. Oil pollution can now be controlled for the benefit of man and his environment, even in underdeveloped and newly industrialized countries, which have previously been neglected for financial reasons. | 05-14-2009 |
20090200231 | Methods And Device For Enhancement Of Anaerobic Digestion - Methods of enhancing anaerobic digestion of wastewater are provided. The methods comprise pressure oxidation of digester material to remove sulfide and/or regenerate iron. Also provided are a pressure oxidizer device and a wastewater treatment system having one or more of such devices. The methods, device, and system have application in treatment of municipal wastewater, wastewater of agricultural and livestock operations, and in biofuels production. | 08-13-2009 |
20090250396 | DRAINAGE WATER-TREATING METHOD AND DRAINAGE WATER-TREATING APPARATUS - Drainage water containing organofluorine compounds is introduced into a micro-nano-babble generation tank ( | 10-08-2009 |
20090289007 | METHOD FOR THE TREATMENT OF WASTE WATER FROM FLORFENICOL PRODUCTION - A method for the treatment of waste water from florfenicol production is provided, which mainly comprises the steps as follows: adding iron chips or steel slag to waste water from a copper salt workshop, regulating the pH value, filtering, then adding limestone, lime or Ca(OH)2 and having a solid-liquid separation; blending the treated waste water and waste water from a splitting workshop, oxidizing the residual reductive matter by ozone and removing NH3-N by blowing; blending the treated water and waste water from esterifying or florfenicol workshops and diluting the blended water, adding phosphate and microelement, regulating the pH value, then having an anaerobic treatment in an anaerobic reactor; diluting the treated waste water, then having an aerobic treatment in an aerobic reactor. The method also can comprise the steps as follows: blending the waste water from all workshops, adding phosphate and microelement, regulating the pH value, blending the treated waste water with recycling anaerobic water and having a settling treatment, then having an anaerobic treatment in an anaerobic granular sludge bed reactor, diluting the treated waste water and having an aerobic treatment in a SBR. | 11-26-2009 |
20100025326 | Method of Supporting Denitrification - A method of supporting denitrification includes receiving biological material at a pulsed electric field station and applying a pulsed electric field to the biological material within a treatment zone in the pulse electric field station to generate treated biological material. The method also includes transporting at least a portion of the treated biological material to an anoxic bioreactor in substitution, at least in part, for an external source of electron donor. A system for supporting denitrification is also provided. | 02-04-2010 |
20100044306 | METHOD AND APPARATUS USING HYDROGEN PEROXIDE AND MICROWAVE SYSTEM FOR SLURRIES TREATMENT - A method and apparatus for treating slurries of organic solids is disclosed. A slurry of organic solids is admixed with hydrogen peroxide, followed by exposure to microwave irradiation resulting in the heating of the mixture and enhanced hydrolysis of the organic solids. The treated slurry of organic solids can then be further treated in a variety of downstream processes, including solid separation, digestion and fermentation. The supernatant portion of the treated slurry of organic solids can be a source from which to recover compounds such as nutrients (for example nitrogen, phosphate, potassium, magnesium, calcium) or industrial organic compounds (such as acetic acid, propionic acid, butyric acid), or as a source of readily biodegradable organic compounds for supplementing a biological wastewater treatment process, digester or fermenter. | 02-25-2010 |
20100044307 | PROCESS AND INSTALLATION FOR ANAEROBIC TREATMENT OF MATERIAL HAVING HIGH SOLIDS CONCENTRATION - The invention relates to a process for anaerobic treatment of material having a solids concentration greater than 15% in a digester in the form of a sealed tank ( | 02-25-2010 |
20100051542 | Wastewater Treatment System and Method - A wastewater treatment system and method comprises a treatment chamber having a filtration membrane spanning an effluent outlet of the chamber and a pair of electrodes in the treatment chamber so as to be in communication with the wastewater. An electrical potential difference is applied between the electrodes such that one of the electrodes functions as an anode and one of the electrodes functions as a cathode. A flow of fluid is induced out of the treatment chamber through the filtration membrane to the effluent outlet. Accordingly the treatment chamber is arranged to biologically treat the wastewater, electrochemically treat the wastewater and mechanically filter the wastewater through the filtration membrane commonly therein. | 03-04-2010 |
20100089828 | MEMBRANE BIOREACTOR FOR PHOSPHORUS REMOVAL - A method of assisting the removal of phosphorous from wastewater in a wastewater treatment system comprising a membrane bioreactor having at least one membrane ( | 04-15-2010 |
20100126932 | METHOD AND APPARATUS FOR TREATAMENT OF CONTAMINATED LIQUID - Methods and apparatuses for treatment of contaminated liquid are provided including an integrated ultra-filtration and clarification apparatus, and an optional integrated electrocoagulation capability. The integrated apparatus comprises an outer tank, an inner casing, and a plurality of ultra-filtration filters contained within the inner casing. Clarification of liquid occurs in the gap between the casing and tank. Solid matter settles, and aggregates in the bottom portion of the tank. The accumulated solid material acts as a secondary filter by pre-filtering the liquid prior to contact with the ultra-filtration filters. Clarified liquid is retained in a chamber of the casing, and the clarified liquid is drawn through the ultra-filtration filters as initiated by a source of vacuum communicating with the ultra-filtration filters. The integrated apparatus can be incorporated within any desired liquid treatment facility, and one combination in accordance with this system of the present invention includes an upstream electrocoagulation unit and a downstream reverse osmosis unit. The electrocoagulation function may be incorporated in the tank by a plurality of reaction plates or blades mounted to the interior sidewall of the tank. Additionally, the integrated apparatuses may include bacterial treatment in which a selected group of micro-organisms are introduced into the apparatus for treatment of particular contaminates. | 05-27-2010 |
20100133180 | Anaerobic treatment method and anaerobic treatment apparatus - A method and apparatus of anaerobic treatment which makes it possible to prevent disintegration of granular sludge and perform high-load high-velocity anaerobic treatment stably even in the case where treatment is performed under conditions where the granular sludge is easily disintegrated. In a reaction tank | 06-03-2010 |
20100176055 | METHOD FOR REMOVING SULPHATE AND HEAVY METALS FROM WASTE WATER - In a method for removing sulphate and heavy metals from waste water: a) in a first treatment step (I) hydrogen sulphide is guided through the waste water, heavy metals that are present in the waste water are precipitated as sulphide, and are removed from the waste water, b) in a second treatment step (II), calcium sulphate is precipitated from the waste water by adding a precipitation auxiliary agent, c) the calcium sulphate is removed in the second treatment step (II) and one part thereof is guided to a third treatment step (III) in which sulphate is converted into hydrogen sulphide with the aid of sulphate-reducing bacteria, d) hydrogen sulphide formed in the third treatment step (III) is guided back to the first treatment step (I). | 07-15-2010 |
20100224557 | METHOD OF OPERATING A BIOREACTOR AND FILTRATION SYSTEM - The disclosure describes a novel method for operating a bioreactor and filtration system. The method adds excess iron to the bioreactor to improve the overall operation and efficiency of the bioreactor/filtration system. | 09-09-2010 |
20100264084 | Apparatus for Water Treatment and Method of Treating Water - An apparatus for water treatment which comprises a means of removing ingredients contained in water and a means of adsorbing ions with a porous molding as an adsorbent, wherein the porous molding comprises fibrils comprising an organic polymer resin and an inorganic ion adsorbent. The fibrils form interconnecting pores open to the outer surface and have voids in inner parts thereof, at least part of the voids being open to the surface of the fibrils. The inorganic ion adsorbent has been deposited on the outer surface of the fibrils and on the surface of the voids in the fibrils. | 10-21-2010 |
20100282674 | Phosphate Recovery From Acid Phase Anaerobic Digesters - A method for recovering phosphate from sewage treatment plants using multi-stage anaerobic digestion includes the treatment of organic acid digest with calcium hydroxide, calcium oxide, and similar compounds to raise pH to near neutral values and precipitate calcium phosphate compounds such as brushite and similar amorphous compounds. The method includes the formation of calcium phosphates on weak-acid ion exchange columns and membranes in contact with organic acid digest. The system includes removal of the calcium phosphate compounds formed by sedimentation, either static or against an upwelling flow, centrifugation, or filtration. | 11-11-2010 |
20100326908 | Wastewater treatment system - The wastewater treatment system includes a tank having first and second partition walls dividing the tank into first, second and third chambers. An inlet port is formed through the first chamber and an outlet port is formed through the third chamber. A first port is formed through the first partition wall for controlling fluid flow from the first chamber to the second chamber, and a second port is formed through the second partition wall for controlling fluid flow from the second chamber to the third chamber. Oils and sludge are removed from the wastewater in the first chamber. Anaerobic bacteria within the second chamber then removes organic material from the water. The water is stored in the third chamber is irradiated by germicidal ultraviolet light before discharge from the third chamber. | 12-30-2010 |
20110006002 | LOW CONCENTRATION WASTEWATER TREATMENT SYSTEM AND PROCESS - A low concentration wastewater treatment system is provided that includes a high flux adsorbent material treatment system integrated with a low flux adsorbent material biological regeneration reactor. The high flux adsorbent material treatment system includes one or more unit operations for mixing low concentration wastewater with adsorbent material that is fresh, recycled, or a combination of both, and for decanting a liquid effluent having a reduced level of contaminants. The adsorbent material with adsorbed contaminants is regenerated in a low flux adsorbent material biological regeneration reactor in which a biological reaction occurs, such as biological oxidation, wherein organic contaminants in the wastewater are metabolized generally into carbon dioxide and water. Excess biomass is removed from the adsorbent material, and the thus-regenerated adsorbent material is recycled to the high flux adsorbent material treatment system. | 01-13-2011 |
20110017664 | SUSPENDED MEDIA MEMBRANE BIOLOGICAL REACTOR SYSTEM AND PROCESS INCLUDING SUSPENSION SYSTEM AND MULTIPLE BIOLOGICAL REACTOR ZONES - A wastewater treatment system is provided comprising a biological reactor having a separation subsystem, a suspension system and a membrane operating system. The separation subsystem is constructed and arranged to maintain adsorbent material in the biological reactor with a mixed liquor. The suspension system is positioned in the biological reactor and is constructed and arranged to maintain adsorbent material in suspension with mixed liquor. The membrane operating system is located downstream of the biological reactor and is constructed and arranged to receive treated mixed liquor from the biological reactor and discharge a membrane permeate. In addition, a wastewater treatment system is provided comprising a first biological reaction zone, a second biological reaction zone and a membrane operating system. The first biological reaction zone is constructed and arranged to receive and treat the wastewater. The second biological reaction zone includes a separation subsystem and is constructed and arranged to receive effluent from the first biological reaction zone. A suspension system for adsorbent material is provided in the second biological reaction zone. The membrane operating system is located downstream of the second biological reaction zone and is constructed and arranged to receive treated wastewater from the second biological reaction zone and discharge a membrane permeate. | 01-27-2011 |
20110036772 | Method of Removing Phosphorus from Wastewater - A process for removing phosphorus from wastewater wherein an iron or aluminum salt is added to the wastewater. The iron or aluminum salt results in the precipitation of certain iron or aluminum species that include phosphorus adsorption sites. These iron or phosphorus species are settled and become a part of sludge produced in the course of the wastewater treatment process. By recycling substantial portions of the sludge, the concentration of these iron or aluminum species in the wastewater is increased. This increased concentration results in the presence of large quantities of unused phosphorus adsorption sites that attract and adsorb phosphorus, resulting in phosphorus being removed from the wastewater. | 02-17-2011 |
20110062080 | BIO-DENITRIFICATION APPARATUS AND METHOD FOR MAKING AND USING SAME - A denitrification system is disclosed, where a plurality of biological regenerated adsorptive cells or units. Each cell includes a counterflowing absorptive media and waste water to achieve a two or three zone biomass nitrate/nitrite degradation environment. The system includes a backwash water recirculation loop and a media recirculation loop, where the media recirculation loop subjects the media a sufficient shear to dislodge dead microbes and/or weakly bound microbial films from the media surface, but insufficient to substantially reduce the particle size of the friable media. Nutrient supply and distribution and gas controls are used regulate cell characteristics. | 03-17-2011 |
20110127216 | METHOD AND DEVICE FOR BIOLOGICAL TREATMENT OF WATER IN SWIMMING POOLS - The invention relates to a method for biological treatment of water in swimming pools. The method requires neither chlorine nor other toxic chemicals in the pool water, since near-surface pool water is mechanically purified in a first water circuit and suspended matter situated in the pool water is first retained in a biological filter ( | 06-02-2011 |
20110233136 | Water Treatment Process - The present invention provides a process for treating water that comprises chloride ions, other ions (e.g., ferrous ions, sulfide ions, or sulfite ions) and microorganisms. | 09-29-2011 |
20110253626 | Method and a device for biologically treating a contaminated liquid feedstock including a dispersible and digestible organic liquid phase such as a toxic oil or solvent - The installation comprises three reaction vessels ( | 10-20-2011 |
20110272351 | CHLORINATOR FOR A BIOSAND FILTER - A chlorinator for a biosand filter includes a chlorinator adapted for treating water after it has been filtered by a biosand filter. The chlorinator has a housing having an inlet on a side and an outlet on a bottom. The inlet is adapted to be attached to the outlet of a biosand filter. A dividing partition divides the housing into an inlet section, an outlet section and a chlorinator section. The inlet section is in fluid communication with the inlet, the chlorinator section and the outlet section. The chlorinator section is in fluid communication with the inlet section and the outlet section. The outlet section is in communication with the outlet. A flow control mechanism in the inlet section is adapted to adjust the amount of water flowing through the chlorinator section. | 11-10-2011 |
20110278222 | ULTRAPURE WATER PRODUCTION METHOD AN APPARATUS THEREFOR - Ultrapure water of high purity having extremely low TOC concentration is produced by efficiently degrading urea in raw water by biological activated carbon treatment even when the raw water contains ammonium nitrogen. The ultrapure water production method, where raw water is treated in a primary pure water system, and then the resulting water is treated in a subsystem, contains a step of treating pretreated water with chlorine based oxidizer added by a biological treatment means installed upstream to the subsystem. Chlorine based oxidizer is added so that the chlorine based oxidizer concentration is 5 times or more than the ammonium nitrogen concentration of water treated in the biological treatment means in terms of Cl | 11-17-2011 |
20120006746 | SYSTEM AND METHOD FOR REDUCING EMISSIONS IN A HOG CONFINEMENT FACILITY - A system and method of reducing ammonia emissions. The system and method include a facility having a waste storage compartment below a floor comprised of slats with openings therebetween. A plurality of injection pipes are attached to a bottom surface of the slats. Each of the plurality of injection pipes includes a plurality of precipitation nozzles. | 01-12-2012 |
20120055872 | SUB-CRITICAL PARTIAL OXIDATION FOR TREATMENT OF NITRATION WASTES - A process for treating wastewater containing nitro-hydroxy-aromatic compounds using oxidative sub-critical conditions. The wastewater to be treated is adjusted to contain excess hydroxide equivalent to greater than three moles of free hydroxide per mole of total nitro-hydroxy-aromatic compounds, and a sub-stoichiometric amount of an oxidant is supplied to the wastewater. The nitro-hydroxy-aromatic compounds may include nitro-phenol salts or nitro-cresol salts. | 03-08-2012 |
20120061317 | Magnetic Pollen Grains as Sorbents for Organic Pollutants in Aqueous Media - A method of removing a contaminant from liquid is provided. The method includes adding magnetic biological particles to a liquid containing a contaminant, sorbing the contaminant to the magnetic biological particles, and separating the sorbed contaminant from the liquid by applying a magnetic field to the magnetic biological particles. In some versions, the magnetic biological particles are pollen grains having added magnetic material. Also provided are methods of making magnetic biological particles, and compositions containing magnetic biological particles. | 03-15-2012 |
20120061318 | APPARATUS AND METHOD FOR THERMAL HYDROLYSIS OF ORGANIC MATTER - The invention relates to an apparatus for thermal hydrolysis of organic matter, wherein a heating element ( | 03-15-2012 |
20120074058 | NUTRIENT RECOVERY METHODS AND USES THEREOF - Provided herein is an efficient solid-liquid separation method for bio-waste material treatment. The method contemplates the addition of certain cationic polyelectrolytes (or “polymers” as used herein) to the bio-waste materials prior to solid-liquid separation, such as centrifugation, thus greatly facilitate the subsequent solid-liquid separation step. The liquid portion, once separated from solid portion using the subject methods, can be subjected to further downstream nutrient recovery manipulations (such as phosphate precipitation and ammonia stripping) with potentially better efficiency, or may be used directly in a number of operations, such as a liquid diluent for feedstocks in an ethanol plant. | 03-29-2012 |
20120125840 | SYSTEMS AND METHODS FOR ANAEROBIC DIGESTION OF BIOMATERIALS - Systems and methods for performing anaerobic digestion of biomaterials using a clarifier, a batch reactor, and/or a digester are disclosed. The clarifier performs pretreatment processing of biomaterial to improve anaerobic digestion. The batch reactor and/or the digester are coupled to the clarifier and are configured to digest the processed biomaterial. A control system for an anaerobic digestion process includes a flow control system, a temperature control system, and a totalization system. The flow control system controls the flow of biomaterial and the delivery of chemical agents to the biomaterial based on conductivity, temperature, pressure, and/or composition of the biomaterial. The temperature control system includes a heat source and heat exchangers that control the temperature of the biomaterial. The totalization system senses the volume of biomaterial in at least one stage of an anaerobic digestion process and a controller controls the flow control system based upon the sensed volume of biomaterial. | 05-24-2012 |
20120125841 | APPARATUS AND METHOD FOR DISPOSAL AND TREATMENT OF WASTE WATER, SEWAGE AND/OR EFFLUENT - Filtration apparatus ( | 05-24-2012 |
20120152837 | BIOLOGICAL TREATMENT METHOD OF ORGANIC-MATTER-CONTAINING WATER - Provided is a biological treatment method of organic-matter-containing water in which a decrease in the permeation flux of a membrane in a membrane-separation activated-sludge process can be effectively suppressed. A biological treatment method of organic-matter-containing water includes introducing organic-matter-containing water containing organic matter into a biological treatment tank, mixing the organic-matter-containing water with activated sludge, biologically treating the organic-matter-containing water, and subjecting a mixed liquor of the organic-matter-containing water and the activated sludge to membrane separation, wherein an iron salt and a phenolic resin are added to the raw water. Substances (for example, metabolites of activated-sludge organisms) that cause a decrease in the permeation flux of a separation membrane become insoluble due to the flocculating effect by the iron salt and bonding with the phenolic resin. | 06-21-2012 |
20120228218 | PROCESS FOR WORKUP OF NOX-CONTAINING OFFGASES FROM WASTEWATER STREAMS OF NITRATION PLANTS - The present invention relates to a process for workup of nitrite-comprising alkaline process wastewaters from the nitration of aromatic compounds, wherein the alkaline process wastewater is acidified by addition of acids and the offgas which comprises nitrogen oxides and escapes from the acidified process wastewater is worked up, comprising the steps of
| 09-13-2012 |
20120241376 | METHOD OF SELENIUM REMOVAL FROM AN AQUEOUS SOURCE - A process for removing selenium is described in which selenium is removed from an aqueous source for discharge into a lake, pond, river or stream by a combination of biological reduction of selenium followed by adsorption. The aqueous source first passes through a bioreactor which reduces the selenium compounds in solution to organic selenium and selenide. An adsorber, such as activated carbon, is then used to remove the organic selenium and selenide from solution. Optionally, a pump introduces a carbon source such as molasses to the bioreactor to initiate and sustain microbiological metabolic processes. | 09-27-2012 |
20120261338 | METHODS AND APPARATUS FOR STRUVITE RECOVERY USING UPSTREAM PHOSPHATE INJECTION - Formation of scale in a wastewater treatment system upstream of a struvite precipitation reactor is inhibited by injection of one or more of CO | 10-18-2012 |
20120279920 | SUSPENDED MEDIA MEMBRANE BIOLOGICAL REACTOR SYSTEM AND PROCESS INCLUDING MULTIPLE BIOLOGICAL REACTOR ZONES - A wastewater treatment system is provided comprising a first biological reaction zone, a second biological reaction zone and a membrane operating system. The first biological reaction zone is constructed and arranged to receive and treat the wastewater. The second biological reaction zone includes a separation subsystem and is constructed and arranged to receive effluent from the first biological reaction zone. A suspension system for adsorbent material is provided in the second biological reaction zone. The membrane operating system is located downstream of the second biological reaction zone and is constructed and arranged to receive treated wastewater from the second biological reaction zone and discharge a membrane permeate. | 11-08-2012 |
20130015129 | DIGESTION OF BIOSOLIDS IN WASTEWATER - A method enhancing biological digestion of wastewater sludge is provided. The method uses chlorine dioxide to accelerate and improve the efficiency of aerobic or anaerobic digestion. | 01-17-2013 |
20130020258 | SYSTEM AND METHOD FOR ADVANCED WASH WATER RECYCLING - The present invention includes a system for recycling wash water, having a first separator configured to separate solids from wash water, a second separator configured to separate oil from wash water, a bioreactor configured to bacterially consume solids from wash water, a third separator configured to further separate solids from wash water, an oxidation chamber configured to sterilize and oxygenate wash water, an aeration tray configured to further oxygenate wash water, a storage tank configured to store wash water, and a pump configured to pump wash water from the storage tank to the bioreactor. The present invention also includes a process and method associated with the use and function of the system. | 01-24-2013 |
20130032534 | DENITRIFICATION PROCESS FOR REMEDIATION OF CONTAMINATED GROUNDWATER AND SOIL - Processes for removing hydrocarbon contaminants from soil and groundwater via enhanced biological denitrification. A contamination zone of groundwater and/or soil is identified to define a volume or zone of contaminants to be treated. A source of nitrate is applied to the contaminant zone to serve as an electronic acceptor for enhanced bioremediation of the petroleum hydrocarbons. A further carbon source, secondary to the primary contaminant hydrocarbons, is added to form a barrier about the nitrate treatment zone to stimulate degradation of any nitrate migrating from the treatment zone. A further carbon source is also added to stimulate the degradation of any residual nitrate once the primary carbon source of the contaminant hydrocarbons have been destroyed. | 02-07-2013 |
20130032535 | Enhanced High Water Recovery Membrane Process - Disclosed is an economical process for the purification of water containing soluble and sparingly soluble inorganic compounds using single-stage or two-stage membrane processes that integrate membrane water purification with chemical precipitation softening and residual hardness and silica removal from the membrane concentrates using ion exchange resins and silica sequestering media, respectively. | 02-07-2013 |
20130037483 | METHODS OF CONDITIONING MIXED LIQUOR USING WATER SOLUBLE QUATERNARY AMMONIUM STARCHES - Disclosed is a method of conditioning mixed liquor in membrane bioreactor (MBR) systems comprising adding an effective amount of a treatment composition comprising a water soluble cationic quaternary ammonium starch or a water soluble quaternary ammonium starch/gum blend to the mixed liquor. Also disclosed is a method of improving flux in an MBR system comprising adding the treatment composition to the mixed liquor of the MBR. | 02-14-2013 |
20130056412 | MIXED LIQUOR FILTERABILITY TREATMENT IN A MEMBRANE BIOREACTOR - A membrane bioreactor uses a process and apparatus for dosing flux enhancing chemicals (FEC) to respond to temporary periods of operation that cause, or are likely to cause, membrane fouling. An FEC dosing device is provided in communication with a channel separating a process tank and the membrane unit of an MBR. A mixer in the channel rapidly mixes dosed FEC with mixed liquor flowing into the membrane tank. The dosing device is connected to sensors sensing conditions in the channel, the membrane unit or both. FEC is added to the mixed liquor flowing into the membrane unit considering conditions in the mixed liquor flowing to the membrane unit or membrane operating parameters or both. The FEC dosage may be in the range of 0.05 to 10 mg/g MLSS. The process may include steps of initiating dosing, adjusting the dosing concentration, and terminating dosing. | 03-07-2013 |
20130112617 | Redox wastewater biological nutrient removal treatment method - A redox water biological nutrient removal treatment method utilizing sulfurous acid to act as either an oxidizing or a reducing solution via pH adjustment for water conditioning and bacterial treatment. | 05-09-2013 |
20130206687 | METHOD FOR USING ACTIVATED CARBON FOR TREATING WATER - Waste water may be treated by introducing activated carbon into a biological oxidation system as a slurry wherein: (1) the slurry is stable as compared to a conventional activated carbon slurry; (2) the activated carbon within the slurry retains at least 85% of its absorptive capacity; and (3) the activated carbon is immediately available for absorbing organic compounds when introduced into the biological oxidation system. The method is particularly useful for treating upset conditions. These slurries may also be used for treating other types of water to remove compounds that can be absorbed by activated carbon. Exemplary of such water types are process water and run-off water. | 08-15-2013 |
20130206688 | Process And System For The Treatment Of Industrial And Petroleum Refinery Wastewater - There is provided a process of reducing concentration of contaminants in a contaminated wastewater stream, such as contaminated wastewater output from a refinery, such as an oil-refinery; the process comprising: first, passing the contaminated wastewater stream into an electrocoagulation reactor for coagulating dispersed particles, filtering the wastewater stream after electrocoagulation for removing the coagulated dispersed particles, and providing a first stream of treated wastewater after the first filtration; second, passing the first stream of treated wastewater into a Spouted Bed Bio-Reactor (SBBR) containing a micro-organism or bacterium immobilized in polyvinyl alcohol (PVA) gel, filtering the first stream after treatment by the SBBR and providing a second stream of treated wastewater after the second filtration; and third, passing the second stream of treated wastewater into an adsorption column containing granular activated carbon (GAC) and providing a third stream of treated wastewater. There is also provided a system for doing the same. | 08-15-2013 |
20130220920 | METHODS FOR IMPROVING MEMBRANE BIOREACTOR SYSTEMS - A method of conditioning mixed liquor in a membrane bioreactor includes dispersing a treatment additive in the mixed liquor. The treatment additive includes a water soluble block copolymer. Methods for improving flux in a membrane bioreactor and clarifying wastewater are also provided. | 08-29-2013 |
20130220921 | WASTEWATER TREATMENT PROCESS INCLUDING IRRADIATION OF PRIMARY SOLIDS - The present invention provides a method for treating wastewater in which the majority of solids and biological oxygen demand compounds are separated from the wastewater feed using a primary separation process, to produce a solids phase and a water phase. The solids phase is irradiated to reduce the level of pathogens such that it is safe to use as a soil substitute and/or additive so that the solids can thus be disposed of in an environmentally-friendly manner. In additional embodiments, the solids that have been disinfected by radiation are mixed with a suitable inert filler material to produce a soil substitute, fertilizer, compost, or other soil additive. The liquid phase is treated in a substantially smaller system than would be required for treating the full-strength wastewater that can include a suspended media biological regeneration reactor system. The liquid treatment system can include a high flux adsorbent material treatment system integrated with a low flux adsorbent material biological regeneration reactor. | 08-29-2013 |
20130233795 | ANAEROBIC TREATMENT METHOD - In an anaerobic treatment method in which contaminated water is introduced into an acidification tank to decompose polymer components in the contaminated water into organic acids, and the effluent from the acidification tank is introduced into a methane production tank containing non-biological fluidized carriers so as to convert the acids into methane, the treatment is carried out stably and continuously by preventing the occurrence of floating of carriers in the methane production tank. The COD | 09-12-2013 |
20130256226 | METHOD AND APPARATUS FOR TREATING ORGANIC WASTEWATER - [Object] In relation to the treatment of organic wastewater in which organic wastewater is separated from biosludge by solid liquid separation using a separation membrane and the permeate water is subjected to RO membrane separation treatment and further in which normal solid liquid separation treatment is suspended and the membrane is cleaned by passing a cleaning liquid through the membrane from the permeate water side to the concentrated water side, the invention prevents a decrease in the flux of RO membranes due to TOC components eluted from the sludge during membrane cleaning and thereby reduces the frequency of chemical cleaning of the RO membranes as well as increases water recovery rate, thus allowing the treatment to be performed stably and efficiently. | 10-03-2013 |
20130299422 | TREATMENT AGENT FOR SALT-CONTAINING ORGANIC WASTE LIQUID, SALT CONCENTRATION-REDUCING AGENT, TREATMENT METHOD FOR SALT-CONTAINING ORGANIC WASTE LIQUID, AND ENTRAPMENT IMMOBILIZATION CARRIER - A treatment agent for salt-containing organic waste liquid, the treatment agent including: Scuticociliatida, wherein the treatment agent treats salt-containing organic waste liquid; and a treatment method for salt-containing organic waste liquid, the treatment method including: bringing Scuticociliatida and salt-containing organic waste liquid into contact with each other to treat the salt-containing organic waste liquid. | 11-14-2013 |
20130341269 | METHOD FOR DESULPHURATION OF THE DIGESTATE AND THE BIOGAS OF A DIGESTER, AND BIOGAS PRODUCTION FACILITY IMPLEMENTING SAID METHOD - The invention relates to a method for desulphuration of the digestate and biogas in a digester ( | 12-26-2013 |
20140076804 | Struvite Precipitation Using Magnesium Sacrificial Anode - A method precipitating struvite in wastewater uses a magnesium sacrificial anode as the only source of magnesium. A high-purity magnesium alloy cast anode was found to be very effective in recovery of high-quality struvite from water solutions and from supernatant of fermented waste activated sludge (WAS) from a high-purity oxygen wastewater treatment plant. Struvite purity was strongly dependent on the pH and the electric current density. Optimum pH of the solution was in the broad range between 7.5 and 9.3, with struvite purities exceeding 90%. The precipitated struvite accumulated in bulk liquid with significant portions attached to the anode surface from which regular detachment occurred. | 03-20-2014 |
20140083942 | SYSTEMS AND METHODS FOR TREATING PRODUCED WATER - Embodiments relate to systems and methods for treating produced water and other contaminated water that can be customized or adapted to particular characteristics of the water and/or its contaminants or other contents while minimizing costs related to treating the water. In an embodiment, a method of treating produced water comprises degrading solid particles in the produced water using beneficial bacteria; filtering solid particles from the produced water; reducing pathogenic bacteria in the produced water by introducing ozone into the produced water; reducing contaminants in the produced water by passing the produced water through at least one filter; reducing salts in the produced water using a reverse osmosis system; and providing treated produced water. | 03-27-2014 |
20140138311 | APPARATUS AND METHOD FOR REDUCING NITRATE USING IRON-OXIDIZING MICROORGANISM - Disclosed herein are an apparatus and method for reducing nitrate using iron-oxidizing microorganisms, which can easily reduce nitrate using iron-oxidizing microorganisms. The apparatus includes: a nitrate-reducing reactor which is operated under anaerobic conditions and provides a space for reduction of nitrate; and an iron-oxidizing microorganism provided in the nitrate-reducing reactor, wherein the iron-oxidizing microorganism releases divalent iron (Fe | 05-22-2014 |
20140166575 | OIL EMULSIFICATION AND POLYCYCLIC AROMATIC HYDROCARBON ADSORPTION USING FINE PARTICLES AS DISPERSANTS - A method for cleaning an oil spill in a marine environment includes forming a particle-stabilized emulsion containing seawater, carbon black and at least one oil spill component and allowing the at least one oil spill component to degrade, thereby removing said component from the marine environment. Carbon black can be added to an oil-seawater mixture to form a stabilized emulsion containing at least one oil spill component and the oil spill component allowed to degrade, thereby removing the at least one oil spill component from the oil spill. Also disclosed is an emulsion that includes one or more oil spill components, seawater and carbon black particles. | 06-19-2014 |
20140202956 | PRE-TREATMENT OF SLUDGE - A method for treating a sludge to be fed to a bioreactor for treating wastewater, or an anaerobic or aerobic sludge digester, the method comprising contacting the sludge with free nitrous acid. | 07-24-2014 |
20140251904 | VORTEX DIODES AS EFFLUENT TREATMENT DEVICES - The present invention discloses device that can generate a strong vortex in the vortex chamber which significantly enhances rate of reactions and effectiveness of waste water treatment. The present invention disclose vortex diodes with or without inserts/stabilizers as continuous flow reactors to induce cavitation to generate radicals which reduces Chemical Oxygen Demand (COD), ammoniacal nitrogen and color of waste water effectively in effluent treatments. | 09-11-2014 |
20140299541 | WATER FILTRATION AND SEWAGE SYSTEM - A system to reuse water from a septic/bio digester is shown. A sterile potable water stream is produced which is useful for humans, animals and fish farming. | 10-09-2014 |
20140311975 | METHOD FOR CLEANING MEMBRANES AND AN INLET SIDE OF A MEMBRANE FILTRATION MODULE OF AN APPARATUS HAVING A BIOREACTOR AND MEMBRANE FILTRATION MODULE FOR TREATMENT OF AN INCOMING FLUID - A method for cleaning membranes and an inlet side of a membrane filtration module of an apparatus includes filling a basin with a treatment fluid; feeding an incoming fluid to the treatment fluid present in the basin and mixing and treating it with the latter fluid so as to obtain a fluid mixture; feeding the fluid mixture to the membrane filtration module; discharging permeate filtered by and retentate retained by the membranes; and periodically closing the fluid mixture feed-through line and opening the flushing discharge line, so that at least the inlet side of the membranes and the connection chamber of the membrane filtration module disposed underneath it are flushed. | 10-23-2014 |
20140339159 | STORM WATER TREATMENT APPARATUS AND METHOD - A rapidly installed intermittent flow and storm water treatment method and apparatus employing rapid solids separation and sulfur dioxide chemical dewatering technology to produce disinfected reclaimed storm water with heavy metals removed and diluted nutrients suitable for open stream or land application. | 11-20-2014 |
20140374348 | Method for Treating Sewage Sludge and Wastewater Treatment Plant - The invention describes a method for treating sewage sludge through the treatment steps of hydrolysing ( | 12-25-2014 |
20150034554 | SURFACE-TREATED CALCIUM CARBONATE FOR BINDING AND BIOREMEDIATING HYDROCARBON-CONTAINING COMPOSITIONS - The invention relates to a surface-treated calcium carbonate for binding and bioremediating hydrocarbon-containing compositions, to a method for binding and bioremediating hydrocarbon-containing compositions as well as to the use of surface-treated calcium carbonate for binding and bioremediating hydrocarbon-containing compositions and to a composite material comprising the surface-treated calcium carbonate and a hydrocarbon-containing composition. | 02-05-2015 |
20150076061 | COKING WASTEWATER TREATMENT - A process for treating coking wastewater contains the steps of passing the coking wastewater in such an order through coagulation, particles removal, and ion-exchange resin. | 03-19-2015 |
20150083662 | ANAEROBIC SUSPENDED GROWTH TREATMENT OF CONTAMINATED WATER - A system may include a reactor, in which an anaerobic environment exists, that includes a slurry of at least contaminated water and a mixed bacterial culture of facultative bacteria and anaerobic bacteria. The mixed bacterial culture may be suspended within the slurry. The contaminated water may include contaminants associated with a non-metal, a metal, or a metalloid. The mixed bacterial culture may react with the contaminated water to reduce or remove the contaminants from the contaminated water to create a treated slurry. The reactor may output the treated slurry. The system may also include a filtration device to receive the treated slurry; remove, from the treated slurry, the mixed bacterial culture and the contaminants, reduced or removed from the contaminated water, to create treated water; and output the treated water. The system may also include an aeration device to add dissolved oxygen to the treated water, and output the treated water. The system may also include a reaction device where iron or aluminum salts are added to remove phosphorous, selenite, arsenate, or other contaminants which adsorb onto iron or aluminum oxyhydroxide solids. The system may also include a filtration device to remove the solids from the water, and output the treated water. | 03-26-2015 |
20150329393 | THERMO-OXIDATION OF MUNICIPAL WASTEWATER TREATMENT PLANT SLUDGE FOR PRODUCTION OF CLASS A BIOSOLIDS - A process for treatment of municipal wastewater plant sludge to the criteria of Class A biosolids. The process uses hydrogen peroxide and thermo-oxidation to reduce volatile suspended solids to meet the criteria. On a batch basis, waste activated sludge is introduced into a reactor; the concentration of the waste activated sludge is adjusted to about 1.5% total suspended solids with secondary effluent, if necessary; the reactor is mixed; the reactor is pre-heated to an operating temperature in a range of about 65° C. to about 90° C.; subsequently, a 50% solution of laboratory grade hydrogen peroxide is introduced into the bottom of the reactor; and the contents are heated for at least 4 hours. | 11-19-2015 |
20150329396 | Modular Liquid Waste Treatment System and Method - A modular liquid waste treatment system is disclosed. In accordance with some embodiments, the system includes a central distribution unit and one or more treatment fins in flow communication therewith. The distribution unit may be configured to receive liquid waste from a given source and distribute that waste, at least in part, to one or more treatment fins. In turn, bacteria present in a given treatment fin treat the liquid waste, and the resultant treated liquid may drain from the fin to the surrounding environment. In some embodiments, a given treatment fin may include porous media providing a large surface area on which bacteria may grow to facilitate treatment. The system may be installed in and/or above the ground, and in some cases may be surrounded, at least in part, with treatment sand and/or other treatment media. The system may be used in aerobic and/or anaerobic processing of liquid waste. | 11-19-2015 |
20160023935 | TREATMENT OF MUNICIPAL WASTEWATER WITH ANAEROBIC DIGESTION - Low strength wastewater such as municipal sewage is treated using an anaerobic digester. In some examples, a wastewater stream is separated into a solids rich portion and a solids lean portion. The solids lean portion is treated, for example to remove nitrogen. The solids rich portion is treated in an anaerobic digester, preferably with influent or recuperative thickening. In another example, the wastewater stream is fed to an anaerobic digester and solid-liquid separation stages downstream of the digester return active bacteria and undigested organics to the digester. Both cases may use a process train comprising treatment in an anoxic tank followed by a nitritation tank with a portion of the effluent from the nitritation tank recirculated to the anoxic tank to provide nitritation and denitritation. | 01-28-2016 |
20160176736 | TREATMENT FOR DOMESTIC AND INDUSTRIAL WASTE WATER | 06-23-2016 |
20190144318 | PROCESS FOR SELENIUM REMOVAL WITH BIOLOGICAL, CHEMCIAL AND MEMBRANE TREATMENT | 05-16-2019 |