| Patents for C02F 3 - Biological treatment of water, waste water, or sewage (46,453) |
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| 12/22/1999 | CN2354946Y Suspended filtering bed filtering pool for biologic wastewater |
| 12/21/1999 | US6004772 Remedying environment using these microorgansims |
| 12/21/1999 | US6004463 Purification of water with aeration and circulation |
| 12/21/1999 | US6004456 Equalization basin-reactor system |
| 12/16/1999 | WO1999064359A1 Wastewater treatment system |
| 12/15/1999 | EP0963954A2 Method and an apparatus of membrane separation |
| 12/15/1999 | EP0963352A1 Modular water treatment plant and method for operating same |
| 12/15/1999 | EP0963351A1 Method of cleaning wastewater |
| 12/15/1999 | EP0963232A1 Integrated water treatment system for aquaculture water |
| 12/15/1999 | CN2353744Y Aeration device |
| 12/09/1999 | WO1999062833A1 Wastewater treatment process |
| 12/09/1999 | WO1999062832A1 Method for regulating aeration during waste water biological treatment |
| 12/09/1999 | CA2334397A1 Wastewater treatment process |
| 12/08/1999 | EP0962492A1 Use of chitin and/or derivatives thereof as biocatalysts in the remediation of contaminated soils and fluids |
| 12/08/1999 | EP0962427A1 Apparatus for treating organic raw water utilizing anaerobic microorganisms |
| 12/08/1999 | EP0962254A2 Method and device for separating suspended substances from liquids |
| 12/08/1999 | EP0961760A1 Device for carrying out a method for cleaning waste-water |
| 12/08/1999 | EP0625126B1 Bioremediation of contaminated groundwater |
| 12/08/1999 | CN2352525Y Integrated water treatment equipment |
| 12/08/1999 | CN2352524Y Equipment for treating wastewater for leather processing plant |
| 12/08/1999 | CN2352523Y Rotating biological contacting filtering material for water treatment |
| 12/08/1999 | CN1047155C Process for treating electroplating waste water with micro-organism |
| 12/08/1999 | CN1047128C Corrugated sheet assembly |
| 12/07/1999 | US5998198 Burkholderia; remove trichloroethylene from water, soil |
| 12/07/1999 | US5997972 Filling material for percolating filters for the treatment of fluids and process for the production of same |
| 12/07/1999 | US5997751 Method and apparatus for treating aqueous medium containing organic matter |
| 12/07/1999 | US5997736 Method of biologically removing nitrogen and system therefor |
| 12/07/1999 | US5997735 Septic tank with downstream trickling filter |
| 12/02/1999 | WO1999061379A1 Biological purification of water to any degree up to and drinking water |
| 12/02/1999 | WO1999061378A1 Multistage facultative wastewater treatment system |
| 12/02/1999 | WO1999060838A1 Organism and method for metal recovery, remediation and separation |
| 12/02/1999 | CA2333552A1 Biological purification of water to any degree up to and drinking water |
| 12/01/1999 | EP0960860A1 Biologically treating a contaminated aqueous waste stream |
| 12/01/1999 | EP0959992A1 Sequential biological/chemical/biological treatment of organic waste |
| 12/01/1999 | EP0871597B1 Method of treating a biomass in order to remove heavy metals with hydrogen sulphide |
| 12/01/1999 | EP0708740B1 Process and apparatus for biological treatment of water |
| 12/01/1999 | CN2351431Y Sewage treatment detritus aeration head |
| 12/01/1999 | CN2351430Y Living sewage treatment apparatus |
| 12/01/1999 | CN2351429Y Portable oxygen type multi-biomass biological reactor |
| 12/01/1999 | CN1046924C Component of material for purifying and mineralizing drinking water |
| 11/30/1999 | US5993659 Method and plant for waste water treatment |
| 11/30/1999 | US5993658 Method for biodegrading trichloroethylene and method for biodegrading chlorinated organic compound by microorganisms |
| 11/30/1999 | US5993650 Granular carrier for treating sewage or waste water, method for producing the same and apparatus for treating sewage or waste water by using the granular carriers |
| 11/30/1999 | US5993649 Sequential biological-chemical water treatment system |
| 11/30/1999 | US5993158 Method and apparatus for aeration using flexible blade impeller |
| 11/25/1999 | WO1999059925A1 Method and device for cleaning water using dredged soil and method of improving dredged soil |
| 11/25/1999 | DE19822254A1 Separating wall for use in a small sewage plant |
| 11/24/1999 | EP0959047A2 Process and plant for improved oxygen transfer in aerobic treatment processes |
| 11/24/1999 | EP0958748A2 System for the transformation of liquid manure : ZERO-DRAIN |
| 11/24/1999 | EP0958723A1 Installation for the purification of liquid manures and the like |
| 11/24/1999 | EP0958252A1 Methods for the detoxification of nitrile and/or amide compounds |
| 11/24/1999 | EP0958251A1 Biological treatment of spent caustics |
| 11/24/1999 | EP0958250A1 Process for controlling a filter device for the purification of contaminated and in particular nitrates containing liquid |
| 11/24/1999 | EP0958249A1 A process and apparatus for treating waste water |
| 11/24/1999 | EP0958070A1 Biodegradation of the gasoline oxygenates |
| 11/24/1999 | EP0958036A1 Membrane system for treating sanitary wastewater |
| 11/24/1999 | EP0881990B1 Process for the thoroughgoing aerobic biological purification of waste water |
| 11/24/1999 | CN2350386Y Cycle type domestic sewage treating device for ship |
| 11/24/1999 | CN2350385Y Microhole aerator |
| 11/24/1999 | CN2350384Y Pond water aerating machine |
| 11/24/1999 | CN2350383Y Convenient-to-dismount free swinging packing frame |
| 11/24/1999 | CN2350382Y Dynamic three-D spheric suspension packing |
| 11/24/1999 | CN1046685C Method for control of biofouling |
| 11/23/1999 | US5989437 Apparatus for producing air-saturated water |
| 11/23/1999 | US5989428 Controlling biomass microorganism metabolism by supplying amount of oxygen to biomass in response to measured oxygen concentration |
| 11/23/1999 | US5989427 Ceasing effluent flow from filter while maintaining influent flow, supplying backflushing water flow into bottom to release trapped gases without overflowing wier, ceasing backflushing and recommencing effluent flow |
| 11/23/1999 | US5989416 Wastewater treatment system |
| 11/23/1999 | US5988604 Mixing impellers especially adapted for use in surface aeration |
| 11/18/1999 | WO1999058458A1 Improvements to sealed reservoirs for methanation or storage in corrosive atmosphere |
| 11/18/1999 | DE19823350A1 Continuous purification of liquids containing biodegradable contaminants such as halogenated hydrocarbons, polycyclic aromatics or plant protectants |
| 11/17/1999 | EP0957067A1 Aeration tank of organic waste liquor and aeration apparatus using the tank |
| 11/17/1999 | EP0956272A1 Process for the degradation of chlorite |
| 11/17/1999 | EP0956271A1 Device for intensive biological waste-water treatment |
| 11/17/1999 | CN2349205Y Disc brush aerator |
| 11/17/1999 | CN2349204Y Composite spiral type filler |
| 11/16/1999 | US5985150 Process for the aerobic biological purification of water |
| 11/16/1999 | US5985149 Bioremediation system |
| 11/16/1999 | US5985148 Water treatment filter wool balls |
| 11/16/1999 | US5985147 Culturing algae in an attached periphyton bed and running water to be treated over it; allowing algae to sequester pollutant from water thus cleansing water; harvesting algae to remove pollutant; mixing wet biomass with shredded fibers |
| 11/11/1999 | WO1999057276A1 Multifunctional adhesin proteins and their display in microbial cells |
| 11/11/1999 | WO1999057243A1 Microbial culture liquors containing microorganisms differing in characteristics and living in symbiosis and metabolites thereof, carriers and adsorbents containing the active components of the culture liquors and utilization of the same |
| 11/11/1999 | WO1999057068A1 Fully biological premises sewage treatment installation |
| 11/11/1999 | WO1999057067A2 Method for cleaning waste water from the production of agar-agar |
| 11/11/1999 | WO1999043791A9 Diisopropyl fluorophosphatase and the utilization and production thereof |
| 11/11/1999 | WO1999032406A3 Improved effluent treatment system |
| 11/11/1999 | WO1999028245B1 An apparatus for applying alternating anaerobic contact processing for the treatment of wastewater |
| 11/11/1999 | DE19820320A1 Raising the pH of high sulfate- and high Fe-content open-cast working waste ponds |
| 11/11/1999 | DE19819281A1 Verfahren zur Reinigung von Abwässern aus der Agar-Agar Produktion A process for purifying waste water from the agar-agar production |
| 11/11/1999 | CA2331966A1 Microbial culture liquors containing microorganisms differing in characteristics and living in symbiosis and metabolites thereof, carriers and absorbents containing the active components of the culture liquors and utilization of the same |
| 11/11/1999 | CA2330699A1 Multifunctional adhesin proteins and their display in microbial cells |
| 11/10/1999 | EP0955269A1 Heterotrophic denitrating reactor with controlled atmosphere |
| 11/10/1999 | EP0954595A1 Thermophilic methanotrophs for high temperature oxidations |
| 11/10/1999 | EP0954373A1 Device for stirring and aerating a liquid and eliminating the foam in a vat for treating this liquid |
| 11/10/1999 | CN2347966Y Energy-saving sewage aerator |
| 11/10/1999 | CN2347965Y Turbine convection aeration water-pumping atomizing aerator |
| 11/10/1999 | CN1234783A Aeration tank of organic waste liquor and aeration apparatus using the tank |
| 11/10/1999 | CN1234374A Oxygen-gathering, activating and aerating oxygenating machine |
| 11/10/1999 | CN1046313C Process for preparing swamp Rhodopseudomonas preparation and use |
| 11/10/1999 | CN1046254C Reciprocating sewage treatment method |
| 11/09/1999 | US5981272 Composite medium for attaching and growing microorganisms |