| Patents for C02F 3 - Biological treatment of water, waste water, or sewage (46,453) |
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| 12/10/1998 | DE19723789A1 Process and assembly to biologically remove nitrogen from waste water |
| 12/10/1998 | DE19722261A1 Water treatment assembly |
| 12/10/1998 | CA2263088A1 Pool of yeast of the genus candida maltosa used for the biodegradation of petroleum product pollutants, biological preparation obtained using this pool and methods for its preparation and application |
| 12/09/1998 | EP0882676A1 Support separation screen apparatus, method of aeration of support separation screen, aeration apparatus for the method, waste liquid processing method and apparatus using the screen apparatus and aeration apparatus |
| 12/09/1998 | EP0882675A1 Process for improvement of denitrification with simultaneous dephosphatization during waste water treatment |
| 12/09/1998 | EP0881990A1 Process for the thoroughgoing aerobic biological purification of waste water |
| 12/09/1998 | EP0881923A1 BACTERIUM SPECIES COMAMONAS ACIDOVORANS P4a AND PROCESS FOR THE MICROBIAL DECONTAMINATION OF MATERIALS POLLUTED WITH PHENOXYACETIC ACID HERBICIDES |
| 12/09/1998 | EP0767632A4 Method for delivering a gas-supersaturated fluid to a gas-depleted site and use thereof |
| 12/09/1998 | CN2299861Y Sewage, excrement and urine merging purification plant |
| 12/09/1998 | CN2299858Y Sewage treatment installation structure |
| 12/08/1998 | US5846425 Methods for treatment of waste streams |
| 12/08/1998 | US5846424 Biological treatment of materials |
| 12/08/1998 | CA2095731C Wastewater treatment process |
| 12/03/1998 | WO1998054100A1 A process for wastewater treatment using intermittently decanted extended aeration process |
| 12/03/1998 | WO1998054099A1 Waste treatment system |
| 12/03/1998 | WO1998054096A1 System for recovering and treating waste water |
| 12/03/1998 | DE19723008A1 Filter installation for post-purifying water resulting from digestion pit treatment |
| 12/03/1998 | DE19722781A1 Gassing unit for liquids, especially for aerating waste water |
| 12/03/1998 | DE19722510A1 Denitrifying water using anoxic denitrifying microorganisms |
| 12/03/1998 | DE19722268A1 Waste water treatment process and assembly |
| 12/02/1998 | EP0881195A1 Method and apparatus for biological treatment of waste organic liquid |
| 12/02/1998 | EP0880985A2 Effluent filtering apparatus |
| 12/02/1998 | EP0880476A1 Process and plant for sewage treatment |
| 12/02/1998 | EP0880475A1 Process for the treatment of water containing heavy metal ions |
| 12/02/1998 | EP0880474A1 Reactor for biologically removing organic pollutants from water |
| 12/02/1998 | EP0880473A1 Oxygenating apparatus, method for oxygenating water therewith, and applications thereof |
| 12/02/1998 | EP0837627A4 Methods for reducing environmental contaminants |
| 12/02/1998 | EP0764139A4 Rotating contactor including cross flow media for the biological treatment of waste water |
| 12/02/1998 | CN1200678A Method for decompsoing quinolones and naphthyridones |
| 12/02/1998 | CN1200356A New way for reuse of wastewater |
| 12/01/1998 | US5843758 Enzyme based bioremediation |
| 12/01/1998 | US5843305 Sewage and wastewater treatment plant using anaerobic and aerobic microorganisms |
| 12/01/1998 | CA2085176C Wastewater treatment mechanism |
| 11/26/1998 | WO1998052878A1 A water purification apparatus having many functions |
| 11/26/1998 | WO1998052648A1 Method for dechlorinating polychlorinated biphenyls and granules for use in method |
| 11/26/1998 | DE19720983A1 Biological waste water treatment plant for especially remote single dwellings |
| 11/26/1998 | CA2290408A1 A water purification apparatus having many functions |
| 11/25/1998 | EP0879792A2 Method for reducing algae and nutrient medium of a body of water and device for carrying out this method |
| 11/25/1998 | CN2298245Y Floating biological membrance carrier |
| 11/25/1998 | CN1199712A Waste water treatment apparatus |
| 11/24/1998 | US5840196 Wastewater treatment assembly comprising enclosure having rotatable wheel which draws water and air therein, breaking water into droplets and mixing with air to aerosolize |
| 11/24/1998 | US5840191 Process for the treatment of contaminated material |
| 11/24/1998 | US5840182 Apparatus and method for biological purification of waste |
| 11/19/1998 | WO1998051786A1 Reaction sites for microorganisms used to biodegrade contaminants and methods of use |
| 11/19/1998 | WO1998051627A1 Algal turf water purification method |
| 11/19/1998 | WO1998051626A1 Method and apparatus for biological removal of nitrogen compounds from water |
| 11/19/1998 | WO1998051625A1 Method for reducing the level of hydrogen sulfide in wastewater systems |
| 11/19/1998 | WO1998051624A1 Aerobic biodegrading method and plant for lipid compositions |
| 11/19/1998 | WO1998051139A2 Method for reducing moisture content |
| 11/19/1998 | CA2288642A1 Method and apparatus for biological removal of nitrogen compounds from water |
| 11/18/1998 | EP0878444A1 Bio-depurator |
| 11/18/1998 | EP0878214A2 Process and apparatus for remedying polluted media |
| 11/18/1998 | EP0877922A1 Method for monitoring biological activity in fluids |
| 11/18/1998 | EP0877800A1 Bacterial polyphenol oxidase from bacillus for use in oxidation of colored substances |
| 11/18/1998 | EP0877721A1 Method for treating aqueous liquid effluents containing organic and inorganic materials to enable recycling thereof |
| 11/18/1998 | EP0772880B1 A method of decontaminating a cementitious or a metallic surface |
| 11/18/1998 | EP0642470B1 Biological waste water treatment |
| 11/18/1998 | CN2297448Y Eardrop type combined filling |
| 11/18/1998 | CN1199386A Biological method of treating sewage contg. high concentrations of sludge |
| 11/17/1998 | US5839079 Method of decontaminating a cementitious or a metallic surface |
| 11/17/1998 | US5837638 Zeolite composition |
| 11/17/1998 | US5837142 Membrane process for treating sanitary wastewater |
| 11/17/1998 | US5837141 Tank with microorganisms for water purification |
| 11/12/1998 | WO1998050311A1 Liquid waste treatment bioreactor process and apparatus |
| 11/12/1998 | DE19719403A1 Disposal of rubbish dump seepage water |
| 11/11/1998 | EP0877001A1 Sedimentation acceleration agent for activated sludge and method for using the same |
| 11/11/1998 | EP0877000A2 Feeding/distribution device for a tank of a water treatment plant |
| 11/11/1998 | EP0876479A1 Porous polymeric biosupports and their use in the biotreatment of aqueous waste streams |
| 11/11/1998 | EP0876304A1 Soil and water remediation and enhancement process and apparatus therefor |
| 11/11/1998 | EP0876303A1 Composition for the treatment of municipal and industrial waste-water |
| 11/11/1998 | EP0876302A1 Fat and oil removal installation |
| 11/11/1998 | EP0626877B1 Decanting apparatus |
| 11/10/1998 | US5833857 Mobile Bioreactor and Biogenerator |
| 11/10/1998 | US5833856 Process for biologically removing phosphorus and nitrogen from wastewater by controlling carbohydrate content therein |
| 11/10/1998 | CA2126511C Sediment detoxification using an organic amendment |
| 11/10/1998 | CA2057861C Process for the treatment of water containing sulphur compounds |
| 11/05/1998 | WO1998049337A1 Bioluminescent reporter bacterium and methods for toxicity monitoring in biological wastewater treatment systems |
| 11/05/1998 | WO1998049280A1 Method for reducting bioavailability of lead by a lead-sequestering soil bacterium |
| 11/05/1998 | WO1998049106A1 Fe(o)-based bioremediation of aquifers contaminated with mixed wastes |
| 11/05/1998 | WO1998049104A1 Method for reducing or eliminating deposits of bacterial origin in close circuit water installations |
| 11/05/1998 | WO1998028043A3 BACTERIAL STRAIN CORYNEBACTERIUM. sp K2-17 AND METHOD FOR MICROBIAL DECONTAMINATION OF MATERIALS CONTAMINATED WITH PHENOXYALCANOIC ACID COMPOUNDS |
| 11/05/1998 | WO1998019969A3 Method of phased biological treatment of raw untreated sewage in a biofilter |
| 11/05/1998 | DE19718498A1 Disposal of sewage and fluids from chemical toilets |
| 11/05/1998 | CA2287940A1 Bioluminescent reporter bacterium and methods for toxicity monitoring in biological wastewater treatment systems |
| 11/05/1998 | CA2287222A1 Method for reducing bioavailability of lead by a lead-sequestering soil bacterium |
| 11/04/1998 | EP0874785A1 Method and device for introducing a gas or gas mixture into a liquid |
| 11/04/1998 | EP0874784A1 A method and apparatus for maintaining solids in suspension in a liquid |
| 11/04/1998 | EP0792196B1 Method of decontaminating contaminated material and devices therefor |
| 11/03/1998 | US5830357 Process for cleaning a waste water stream or the like |
| 11/03/1998 | US5830351 Biomass conditioner |
| 11/03/1998 | CA2132592C A method of treating wastewater |
| 11/03/1998 | CA2010127C System for treating waste water by nitrification |
| 11/02/1998 | CA2204422A1 Method of treating the liquid fraction of pig manure by an aerobic biofilter and sequestration of the solid fraction by zeolite |
| 10/29/1998 | WO1998047828A1 Biological method for recycling organic wastewaters, sludges and/or solids |
| 10/29/1998 | WO1998047827A1 Air charged backwashing bioclarifier |
| 10/29/1998 | WO1998047820A1 Method for in-situ immobilisation of heavy metals and/or sulphate in water-containing zones |
| 10/29/1998 | WO1998047701A1 Sintered porous plastic products and method of making same |
| 10/29/1998 | DE19740840C1 Waste water aerobic treatment assembly comprises rotating drum |
| 10/29/1998 | DE19717758A1 Biological purification of waste liquor or sewage in tower |
| 10/29/1998 | DE19716939A1 Treatment of waste water containing azo- and sulphur-based dyes from textiles and leather industry |