| Patents for C02F 3 - Biological treatment of water, waste water, or sewage (46,453) |
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| 08/31/2000 | DE19907839A1 Double vortex process aerates effluent water in a biological water treatment process maximizing removal of water impurities |
| 08/30/2000 | EP1031540A1 Apparatus for water treatment |
| 08/30/2000 | EP1030821A1 Method for denitrifying waste water |
| 08/30/2000 | EP1030820A1 Method for automatically adjusting the aeration of an installation for biological treatment of waste water |
| 08/30/2000 | CN2393869Y Tubular semi-cyliner aerating head |
| 08/30/2000 | CN2393868Y Bioreactor with pressure membrane for filtering drained water |
| 08/30/2000 | CN2393613Y Rotary water remover |
| 08/30/2000 | CN1265051A Method and appts. for lysing sludge and dividing solids in liquid suspension |
| 08/30/2000 | CN1264684A Technological route for biologically treating life sewage in urban area |
| 08/30/2000 | CN1264683A Biological process for treating life sewage in urban area |
| 08/29/2000 | US6110661 Bioluminescent reporter bacterium |
| 08/29/2000 | US6110372 Degrading petroleum pollutant comprising compound contained in crude or refined petroleum by treating petroleum pollutant with butane-utilizing bacteria in presence of butane substrate and oxygen |
| 08/29/2000 | US6110371 Process and device for fat separation |
| 08/29/2000 | US6110370 Treatment of water |
| 08/29/2000 | CA2217744C Settling device for a fluid containing liquid, gas and particulate material, as well as a cleaning device provided herewith and a method for cleaning waste water |
| 08/24/2000 | WO2000048950A1 Improvements to purification of effluents with activated sludge |
| 08/24/2000 | WO2000048949A1 Method for microbially cleaning up sulphuric-acid residual mining pools |
| 08/24/2000 | WO2000048948A1 Magnetic sludge suitable for use in waste water treatment and method for preparing the same and method for waste water treatment |
| 08/24/2000 | WO2000048755A1 Remediation of contaminated groundwater |
| 08/24/2000 | DE19907866A1 Process to oxygenate and nitrify process water used in aquaculture overcomes problems associated with the use of silicon hoses |
| 08/24/2000 | DE19907002A1 Process to neutralize acidic water in open cast brown coal quarry with straw and sugar beet carbonation sludge as nutritional base |
| 08/23/2000 | EP0958070A4 Biodegradation of the gasoline oxygenates |
| 08/23/2000 | CN2392768Y Improved aeration rotary disc for oxidation ditch |
| 08/23/2000 | CN2392767Y Continuous-flow constant-level sequentially sewage treatment apparatus |
| 08/23/2000 | CN1055671C Method for treating waste water from chlorhydrin biology and containing organic chlorid compound |
| 08/22/2000 | US6107067 Porous, non-macroporous, inorganic oxide carrier body for immobilizing microorganisms for bioremediation |
| 08/22/2000 | US6106719 Process for treating liquid waste using light under anaerobic conditions |
| 08/22/2000 | US6106718 Enhanced denitrification process by monitoring and controlling carbonaceous nutrient addition |
| 08/22/2000 | US6106717 Method for treating organic waste water |
| 08/22/2000 | US6106716 System for purification of domestic household effluent |
| 08/22/2000 | US6106704 Wastewater treatment system with air pump/control panel platform |
| 08/22/2000 | US6105593 Fixed film media cleaner apparatus and method |
| 08/17/2000 | WO2000047525A1 Process for the removal of suspended and other material from waste water |
| 08/17/2000 | CA2362358A1 Process for the removal of suspended and other material from waste water |
| 08/16/2000 | EP1028092A1 Process for treating effluents by alternated supply and rythmical aeration |
| 08/16/2000 | EP1027294A1 Mediated biological-abiotic waste treatment |
| 08/16/2000 | EP1027293A1 A process for biological purification of waste water with reversing operation |
| 08/16/2000 | EP1027292A1 A process for biological purification of waste water under sludge retention |
| 08/16/2000 | CN2391872Y Device for removing floater for three-phase separator |
| 08/16/2000 | CN2391871Y Three-phase separator |
| 08/16/2000 | CN2391870Y Waste water bio-filtering treatment equipment using floating filtering materials |
| 08/16/2000 | CN1263055A Method for removing micropollutant nitrate and nitrite from drinking water |
| 08/16/2000 | CN1263054A UFO ball butterfly magnetic biological filling material |
| 08/15/2000 | US6103125 Zero waste effluent water desalination system |
| 08/15/2000 | US6103123 Aeration device and method for creating and maintaining facultative lagoon |
| 08/15/2000 | US6103111 Tourmaline composite grains and apparatus using them |
| 08/15/2000 | US6103109 Wastewater treatment system |
| 08/15/2000 | CA2003128C Process and apparatus for the biological purification of sewage |
| 08/12/2000 | CA2261476A1 Apparatus for sewage purifying treatment |
| 08/10/2000 | DE19905301A1 Recovery of biodegradable surfactant-containing water from vehicle or other washing plant with prevention of impurities concentrating by having recycling units connected to individual stages and by adding fresh water |
| 08/10/2000 | DE19905300A1 Purifying and recovering surfactant-containing water from industrial scale washing processes using two bioreactors containing biodegraders of different activity rate |
| 08/10/2000 | DE19904642A1 Hydroelectric power generation station and water treatment plant has water collection building formed by foundation block with sand collection chamber |
| 08/09/2000 | EP1025052A1 Method for reducing the effect of detergents upon germination and/or growth of microorganisms |
| 08/09/2000 | EP0683755B1 Method and apparatus for biological activation waste water treatment |
| 08/09/2000 | CN2390877Y Vertical pipe bundle methane-producing area sludge returning anaerobic digester |
| 08/09/2000 | CN2390876Y Homogeneous aeration tank |
| 08/09/2000 | CN2390875Y Sewage treatment apparatus |
| 08/09/2000 | CN1262241A Process for treating sewage in urban area |
| 08/09/2000 | CN1262240A Process for treating sewage in urban area |
| 08/09/2000 | CN1262239A Biologic process for treating polluted water body of brook in urban area |
| 08/09/2000 | CN1262238A Multi-biomass bioreactor |
| 08/08/2000 | US6100382 Reducing agent for chemical reduction; for the bioremediation of impurities in water, soil or sediments; for pollution control |
| 08/08/2000 | US6100081 For simultaneously purifying waste waters and waste gases via a fixed bed support; filtering material has increasing biofiltration capacity to prevent clogging upon downward flow |
| 08/08/2000 | US6099731 Containing chlorinated organic compounds, a microorganism is introduced from a degradation tank to a separation tank and an energy source is supplied to the microorganism separated in the separation tank. |
| 08/08/2000 | US6099722 Aerobic wastewater treatment system for small flows |
| 08/08/2000 | CA2259381C Liquid waste treatment bioreactor process and apparatus |
| 08/08/2000 | CA2096679C Water filtration device |
| 08/08/2000 | CA2085454C Process for biological treatment of impurity-loaded liquids |
| 08/03/2000 | WO2000044676A1 Novel method for filtering surface water with thin supernatant layer and implementing plant |
| 08/03/2000 | DE19904493A1 Plant for purifying waters and sludges includes main electron-beam reactor tank with air-cooled window from which ozone is fed to pre- and post-reaction stages to break contaminants down completely, with high energy efficiency |
| 08/03/2000 | DE19903035A1 Verfahren sowie Vorrichtung zur Behandlung von Abwasser in Klärbecken A method and apparatus for treating waste water in clarifier |
| 08/03/2000 | DE19723789C2 Verfahren und Vorrichtung zur biologischen Entfernung von Stickstoff aus Abwasser Method and device for biological removal of nitrogen from waste water |
| 08/02/2000 | EP1024117A1 Process and apparatus for water treatment in treatment tank |
| 08/02/2000 | EP1023977A1 Process for preparing cellulosic fibrous aggregates |
| 08/02/2000 | EP1023244A1 A fluid mixing system |
| 08/02/2000 | EP1023220A1 Method and apparatus for aeration using flexible blade impeller |
| 08/02/2000 | CN2389888Y Anaerobic reactor with compound structure |
| 08/02/2000 | CN1055070C Processing method of waste water from refined p-benzene dicarboxylic acid production |
| 08/01/2000 | US6096530 For bioremediation of polluted soils, sewage and waste waters |
| 08/01/2000 | US6096215 A composition for treating nutrient deficient wastewater from a paper-making process comprising urea and phosphoric acid. |
| 08/01/2000 | US6096214 Process for applying alternating anaerobic contact processing for the treatment of wastewater |
| 08/01/2000 | US6096203 Wastewater treatment system |
| 08/01/2000 | US6095163 Parts washing system |
| 08/01/2000 | CA2116177C Solid material flow-separating method |
| 07/28/2000 | CA2295268A1 Effluent treatment in process for cellulosic fibrous aggregate preparation |
| 07/27/2000 | WO2000043322A1 Sludge density measurement for controlling a sludge treatment stage |
| 07/27/2000 | WO2000043138A1 Method and apparatus for purifying polluted substances containing halogenated organic compound |
| 07/27/2000 | DE19905633C1 Small-scale waste water treatment plant maximizes residence time in nitrification zone and removal of secondary sludge, with easy maintenance |
| 07/27/2000 | DE19901214A1 Waste disposal system for household effluent water, organic wastes and raw sewage overcomes problem of infrequent refuse collection |
| 07/26/2000 | EP1022257A1 A water purification apparatus having many functions |
| 07/26/2000 | EP1021378A1 Apparatus and process for sewage and wastewater treatment |
| 07/26/2000 | EP0876302B1 Fat and oil removal installation |
| 07/26/2000 | EP0655420B1 Water treatment method and water treatment apparatus |
| 07/26/2000 | CN2389153Y Float cylinder type rotary swing water decanter |
| 07/26/2000 | CN1054830C Sewage-treatment method of oxidizing sewage in ditch capable of alternatively working at four ditches |
| 07/25/2000 | US6093322 Process for controlling the nitrification and denitrification phase |
| 07/25/2000 | US6093321 Subjecting water to heterotrophic bacterial flora for removal of nitrogenous compounds, resulting in a heterotrophic biological denitrification reaction releasing carbon dioxide, recycling released carbon dioxide, coagulating, clarifying |
| 07/25/2000 | US6093316 Sewage treatment apparatus |
| 07/20/2000 | WO2000041976A1 System for treating palm oil mill effluent |
| 07/20/2000 | WO2000041975A1 Method for reducing hydrogen sulfide level in water containing sulfate-reducing bacteria and hydrogen sulfide-metabolizing bacteria |