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| Number | Title | Issue Date |
| 8163181 | 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... | 04/24/2012 |
| 8137557 | Wastewater treatment method A liquid aeration apparatus includes a vessel having sidewalls, a closed bottom end and, a liquid outlet being provided at or near the upper end. The sidewalls define a cross-sectional interior open area with a vertical depth. An air diffuser is positioned within th... | 03/20/2012 |
| 8083944 | Removing ammonia from waste water during cold weather months Described herein is a Submerged Attached Growth Reactor (SAGR) which provides nitrification (ammonia removal) from wastewater in cold to moderate climates. The system described herein is novel in that the SAGR reactor includes more than one influent distribution poi... | 12/27/2011 |
| 8070948 | Method of purifying wastewater and sewage treatment plant A description is given of a sewage treatment plant, in particular a small sewage treatment plant, having at least one activation tank for wastewater and/or having at least one secondary clarification tank for wastewater, wherein the activation tank and/or the second... | 12/06/2011 |
| 8057676 | Drainage water-treating method Drainage water containing an organofluorine compound is introduced into a raw tank (1) and then filtered through a filtration device (4). Next, a microorganism, a micro-nanobubbling auxiliary agent and a nutrient are added thereto in a first transit ta... | 11/15/2011 |
| 7972512 | Suspended media granular activated carbon membrane biological reactor system and process A system and process for treating an industrial wastewater stream is provided using a membrane biological reactor in which granular activated carbon material is introduced into an aeration portion and maintained upstream of a membrane operating system. The size of t... | 07/05/2011 |
| 7938965 | Biofilm reactor The present invention provides a reactor for the biological processing of fluid such as domestic or industrial waste water or the like, the reactor comprising a plurality of substantially horizontal layers of growth medium stacked one above the other, and having a c... | 05/10/2011 |
| 7914677 | Water treatment apparatus and water treatment method Water (23) that contains micro-nano bubbles generated in a micro-nano bubble generation tank (6) is introduced and treated in a charcoal water tank (ii) which is filled with a charcoal (15) and in which an air diffusing pipe (12) is place... | 03/29/2011 |
| 7897048 | Membrane bioreactor and sewage treatment method The present invention discloses a membrane, optionally for use in sewage treatment. The membrane comprises a support membrane having a gas face biolayer on a gas face of the membrane and/or in the support membrane near the gas face, and a liquid face biolayer on a l... | 03/01/2011 |
| 7892433 | Wastewater treatment system Disclosed is a system for treating wastewater. The system includes a microorganism clad structure positioned in a body of wastewater such that the microorganism clad structure is at least partially submerged in the body of wastewater. The apparatus also includes an ... | 02/22/2011 |
| 7820047 | Integrated multi-zone wastewater treatment system and method A wastewater treatment system has two separate but interlinked tanks containing four different zones, namely aerobic, microaerophilic, anoxic and anaerobic, for the biological treatment of the wastewater, as well as two clarification zones and a filtration unit for ... | 10/26/2010 |
| 7794599 | Bioreactor system for multi-stage biological wastewater treatment A bioreactor system for microbiological treatment of wastewater including: at least one highly-flexible substrate for providing a superficial environment conducive for supporting biomass growth, the substrate including: (a) a large plurality of threads disposed in a... | 09/14/2010 |
| 7790034 | 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... | 09/07/2010 |
| 7731852 | Biomass support members and panels, biological processes and biological wastewater treatment apparatus Biomass support members, including woven textile media, useful in biological contact processes and apparatus; biomass support panels of limited flexibility and substantial surface expanse, with or without frames, comprising a variety of different woven or non-woven ... | 06/08/2010 |
| 7727397 | Wastewater treatment apparatus A wastewater treatment apparatus having a fixed film media apparatus having insertable high surface area polymer cartridges providing growth surfaces for autotrophic or heterotrophic bacteria and a protective shielding surface which isolates the biofilm from turbule... | 06/01/2010 |
| 7718067 | Septic system remediation method and apparatus A method and apparatus for remediating a failing wastewater treatment system comprising a positive air, oxygen, ozone, or combination thereof, generating pressure pump (40) directing the air, oxygen, ozone or combination through a tube (50) to an air s... | 05/18/2010 |
| 7699985 | Process for providing oxygen to a liquid A membrane supported biofilm reactor uses modules having fine, hollow fibers, for example, made from melt spun thermoplastic polymers treated after spinning to increase their permeability to oxygen, used, for example, in tows or formed into a fabric. In one module, ... | 04/20/2010 |
| 7678274 | Wastewater treatment system Disclosed is a system for treating wastewater. The system includes a microorganism clad structure positioned in a body of wastewater such that the microorganism clad structure is at least partially submerged in the body of wastewater. The apparatus also includes an ... | 03/16/2010 |
| 7658851 | Method of growing bacteria for use in wastewater treatment A device and method for growing aerobic and facultatively anaerobic bacteria such as Pseudomonas Fluorescens, Bacillus subtilis, Bacillus licheniformis, Starkeya novella and various autotrophic sulfur metabolizing bacteria, along with methods for releasing th... | 02/09/2010 |
| 7641798 | Waste water treatment method and waste water treatment apparatus A waster water treatment apparatus has micro-nano bubbles generation tanks, mixing tanks, a submerged membrane tank, a contact oxidation tank, and an activated charcoal adsorption device. In the micro-nano bubbles generation tanks, micro-nano bubbles are added to th... | 01/05/2010 |
| 7582211 | Bacteria growth device, assembly including the same and method associated thereto A bacteria growth device (1) for use with bacteria in a substantially liquid medium, the device (1) comprising at least one strip (5) having a surface area shaped and sized for receiving bacteria present in the substantially liquid medium and fo... | 09/01/2009 |
| 7534351 | Pressurized biological waste water purification process There is provided a reaction system capable of, in the feeding of liquid stored after gas-liquid mixing into waste water to be treated of a reaction tank, conditioning the interior of the reaction tank to a pressurized state so as to simultaneously accomplish enhanc... | 05/19/2009 |
| 7476321 | Method and a plant for waste water treatment A method and a plant for waste water treatment include a method for purifying waste that has the steps of a) storing waste water; b) optionally removing phosphorous compounds; c) leading the waste water to a first aerated biodegrading zone; d) leading waste water fr... | 01/13/2009 |
| 7476322 | Process and energy-efficient biological treatment system with filtration membrane A membrane filtration system comprising one or more submerged ultrafiltration or microfiltration membrane assemblies at ambient pressure, with mixed liquor is discharged underneath each membrane assembly. In a sequenced batch reactor system, a coarse bubble air diff... | 01/13/2009 |
| 7465394 | Wastewater treatment system Disclosed is a system for treating wastewater. The system includes a microorganism clad structure positioned in a body of wastewater such that the microorganism clad structure is at least partially submerged in the body of wastewater. The apparatus also includes an ... | 12/16/2008 |
| 7445715 | System for treating wastewater and a controlled reaction-volume module usable therein A wastewater treatment system including a biological reactor is disclosed. At least one controlled-reaction-volume module is provided to the biological reactor. The at least one controlled-reaction-volume module includes a fixed-film media for supporting a biologica... | 11/04/2008 |
| 7438816 | Method for treating water containing ammonium-nitrogen Raw water containing ammonium-nitrogen is introduced into a nitrification tank and nitrification of nitrite-nitrogen by nitrite oxidizing bacteria is inhibited according to inhibition of the ammonium-nitrogen, thereby conducting stable nitrification of nitrous acid ... | 10/21/2008 |
| 7435349 | System for treating wastewater containing organic compounds A system for treating wastewater containing organic compounds is provided, comprising an anaerobic bioreactor, an aerobic bioreactor disposed rearwardly of the anaerobic bioreactor, and a membrane separation reactor disposed rearwardly of the aerobic bioreactor. The... | 10/14/2008 |
| 7425267 | Method and equipment for treating microcystin-containing water The method for treating microcystin-containing water which detoxifies microcystin in the microcystin-containing water, the method comprises the step of: bringing the microcystin-containing water into contact with a Sphingomonas bacterium to degrade biological... | 09/16/2008 |
| 7407581 | Biodegradation of oxyanions such as perchlorate on ion exchange resins Improved systems and methods for removing the load of perchlorate and other oxyanions off of ion exchange resins through bioregeneration are disclosed. The improved systems and methods rely upon direct contact between the resin and a liquid product containing enrich... | 08/05/2008 |
| 7384554 | Methods for total nitrogen removal from waste streams A method and related apparatus for oxidation and reduction of a reduced aqueous nitrogen contaminant, as can be embodied by a system comprising nitrifying and denitrifying bacteria and contacting oxygen and hydrogen. ... | 06/10/2008 |
| 7384553 | Method for operating anaerobic ammonium oxidation vessel and anaerobic ammonium oxidation equipment A method for operating an anaerobic ammonium oxidation vessel in anaerobic ammonium oxidation in which ammonium and nitrite in water to be treated are simultaneously denitrified by anaerobic ammonium oxidizing bacteria, the method comprising the steps of: wit... | 06/10/2008 |
| 7378022 | System and methods for biological selenium removal from water A biological system for removing selenium from waste water comprises a first immobilized cell bioreactor (ICB) and a selenide removal module. The first ICB comprises a chamber having a substrate housed therein and situated to contact the waste water flowing therethr... | 05/27/2008 |
| 7371326 | Water treatment/remediation system A treatment system passes feed water containing a contaminant such as perchlorate through a bed of strong base anion exchange resin that has been placed in a form (e.g., in sulfate form) to selectively capture the contaminant while passing other ions (e.g., nitrate)... | 05/13/2008 |
| 7371323 | System and method for reducing wastewater contaminants A wastewater treatment system. Toilet, kitchen, commercial, and industrial process waste is segregated from the total wastewater stream and treated in order to reduce the total nitrogen, phosphorous, pathogens, household hazardous and hazardous wastes and organic ca... | 05/13/2008 |
| 7357870 | Method for reducing production of wastewater treatment station sludge with fixed biological cultures A method for reducing the amount of wastewater treatment station sludge first performs wastewater purification with fixed biological cultures from which excess sludge is extracted intermittently during phases of washing and unclogging. Then, the water from the washi... | 04/15/2008 |
| 7354516 | Oil digesting microbe-plastic foam system This invention is a system and method for bioremediation of hydrocarbon and organic pollution in fresh and salt water. Hydrocarbon and organic pollution digesting microbes are placed in a floating carrier where the microorganisms are exposed to the pollution and the... | 04/08/2008 |
| 7335303 | Zero-discharge of water glass effluents by alkaline biotreatment techniques The present invention relates to the collection of alkalophilic/alkaline-tolerant microbes and use of said microbes in water glass wastewater treatment. The wastewater is treated directly with alkalophilic/alkaline-tolerant microbes cultured on granular activated ca... | 02/26/2008 |
| 7332082 | System and method for biological purification of water The invention relates to a method and a water treatment system (2) for treating and/or keeping clean water (1), in particular from swimming facilities (4), whereby the water (1) is pre-cleaned in a first step in at least one mechanical cl... | 02/19/2008 |
| 7326344 | Process for the removal of metals by biosorption from mining or industrial effluents A method and a plant to remove metals by biosorption from mining or industrial effluents comprising: (a) subject the effluent to at least one first stage of pre-treatment, selecting among: precipitation by pH rising, solvent extraction or solvent extraction on emuls... | 02/05/2008 |
