| Patents for C02F 3 - Biological treatment of water, waste water, or sewage (46,453) |
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| 02/16/1983 | EP0072264A1 Filter filled with loose granular material |
| 02/16/1983 | EP0072093A1 Fluid bed reactor with integral flow circulator |
| 02/16/1983 | EP0071960A2 Plant and process for the biological purification of waste water |
| 02/16/1983 | EP0071767A1 Method and apparatus for the aeration of liquids |
| 02/15/1983 | US4374199 Using a magnetotactic bacteric in digester |
| 02/15/1983 | US4374030 Method for separating a dispersed phase from a continuous phase |
| 02/15/1983 | US4374027 Aeration at a food to bacteria ratio of greater than one; dissolved air flotation; sulfite liquors |
| 02/15/1983 | CA1141490A1 Biological filter for the purification of waste waters, and plant thus equiffed |
| 02/15/1983 | CA1141489A1 Process for reabsorption and retention of phosphorous by activated biomass |
| 02/09/1983 | EP0070960A1 Apparatus for the biological purification of organic waste water |
| 02/08/1983 | US4372895 Disc for aeration of sewage |
| 02/08/1983 | US4372856 Sewage treatment, purification of produced methane |
| 02/08/1983 | CA1141046A1 Method and apparatus for aerating of water |
| 02/08/1983 | CA1141045A1 Method and apparatus for treating waste water |
| 02/08/1983 | CA1141044A1 Ozone disinfection system |
| 02/08/1983 | CA1140879A1 Anaerobic digester for organic waste |
| 02/03/1983 | WO1983000323A1 Anaerobic fermentation |
| 02/01/1983 | US4371480 Propeller for distributing a gaseous, powdered or liquid material in a liquid |
| 02/01/1983 | US4371440 Yeasts |
| 02/01/1983 | CA1140686A1 Control of sludge temperature in autothermal sludge digestion |
| 01/26/1983 | EP0070592A1 Process for the biological purification of waste water |
| 01/26/1983 | EP0070374A1 Filling bodies |
| 01/26/1983 | EP0070330A2 Apparatus for liquid-solid fluidized beds |
| 01/25/1983 | US4370235 Method of treating excess sludge |
| 01/25/1983 | US4370234 System and method for removing ammonia from wastewater |
| 01/25/1983 | US4370151 Multistage, multizonal |
| 01/25/1983 | CA1140279A1 Device for flushing and aerating a surface coated with microorganisms in a plant for biological purification of waste water |
| 01/25/1983 | CA1140278A1 Method and apparatus for purifying sewage by means of activated sludge |
| 01/25/1983 | CA1140277A1 Method for bacteriological treatment of manure and high bod industrial wastes |
| 01/20/1983 | WO1983000143A1 Method for treating liquids |
| 01/20/1983 | WO1983000097A1 Method and device for the treatment of a liquid |
| 01/19/1983 | EP0070263A1 Corrugated disk in plastic material acting biological oxidation |
| 01/18/1983 | US4369111 Activated sludge system |
| 01/14/1983 | EP0055292A4 Apparatus for treating liquids. |
| 01/12/1983 | EP0069354A1 Method and apparatus for liquid treatment |
| 01/12/1983 | EP0069353A1 Process for treating a liquid |
| 01/12/1983 | EP0069220A2 Apparatus for waste water purification |
| 01/11/1983 | US4368120 Effluent treatment system |
| 01/11/1983 | US4368119 Apparatus for continuous treatment of mixtures |
| 01/11/1983 | CA1139464A1 Multiple stage jet nozzle aeration system |
| 01/11/1983 | CA1139463A1 Apparatus for contacting a liquid with a gas |
| 01/11/1983 | CA1139462A1 Apparatus for contacting liquid with a gas |
| 01/11/1983 | CA1139461A1 Water closet for vehicles, particularly motor coaches |
| 01/11/1983 | CA1139092A1 Photooxidation by exposure to visible light |
| 01/06/1983 | WO1983000041A1 Method and device for acting upon substances immersed into a liquid preferably an aqueous liquid |
| 01/06/1983 | WO1983000040A1 Method and device for mixing a gas to a liquid |
| 01/06/1983 | WO1983000039A1 Method and device for the treatment of waste waters |
| 01/05/1983 | EP0068916A1 Process and installation for the treatment of sludge originating from waste water purification |
| 01/05/1983 | EP0068906A1 A valve device for agitating the slurry in an anaerobic or aerobic digester |
| 01/05/1983 | EP0068582A2 Purification process of water containing organic pollutants |
| 01/05/1983 | EP0068364A1 Process and apparatus to act upon materials in preferably aqueous liquids |
| 01/05/1983 | EP0068363A1 Process and apparatus for the gasification of a liquid |
| 01/05/1983 | EP0068362A1 Process and apparatus for waste water treatment |
| 01/04/1983 | US4367146 Long vertical shaft bioreactor with modified waste liquor injection |
| 01/04/1983 | CA1138931A1 Prevention of electrode fouling |
| 12/29/1982 | EP0067900A1 Apparatus for the dosed diffusion of gases into liquids |
| 12/28/1982 | US4366059 Anaerobic treatment |
| 12/28/1982 | CA1138578A1 Device for the gasification of liquids |
| 12/21/1982 | US4364826 Waterwheel system for aeration |
| 12/21/1982 | CA1137899A1 Cellulose fermentation process |
| 12/15/1982 | EP0067116A1 Membrane of silicone rubber, process for its preparation and its use in the mixing of gases and liquids and the degassing of liquids |
| 12/15/1982 | EP0067028A1 Apparatus to aerate and mix sewage or other fluids containing solids |
| 12/15/1982 | EP0066898A1 Method and apparatus for treating hydrocarbon and halogenated hydrocarbon contaminated ground and ground water |
| 12/14/1982 | US4363732 Inlet and outlet baffle structure for sewage treatment tanks |
| 12/14/1982 | CA1137659A1 High solids mixture aeration method |
| 12/14/1982 | CA1137658A1 Process and apparatus for the anaerobic treatment of sewage |
| 12/14/1982 | CA1137657A1 Method for sewage treatment with bacteria |
| 12/08/1982 | EP0065983A1 Sewage treatment system |
| 12/07/1982 | US4362539 Foam splitter |
| 12/01/1982 | EP0065574A1 Photosynthetic bacteria culture |
| 11/25/1982 | WO1982004037A1 Water oxidation plant for waters, especially intended for fish ponds |
| 11/24/1982 | EP0065047A1 Waste water treatment system with aeration and circulating means |
| 11/24/1982 | EP0065035A1 Method and apparatus for the denitrification of water |
| 11/23/1982 | US4360234 In-situ method and apparatus for sparging gas bubbles |
| 11/17/1982 | EP0064960A1 A plant for purifying contaminated air |
| 11/16/1982 | CA1135883A1 Method of treating water |
| 11/11/1982 | WO1982003850A1 Device for aerating waste waters to be purified |
| 11/09/1982 | US4358413 Device for dispersing a liquid in a gas phase |
| 11/09/1982 | US4358206 Draft tube apparatus |
| 11/09/1982 | CA1135180A1 Apparatus and method for producing a gas in liquid dispersion |
| 11/08/1982 | EP0055705A4 Waste treatment apparatus. |
| 11/02/1982 | CA1134966A1 Method and apparatus for processing waste |
| 11/02/1982 | CA1134965A1 Method and equipment for processing of organic materials containing nitrogen compounds |
| 10/27/1982 | EP0063146A1 Biological and chemical conversion processes in liquid phase-system |
| 10/26/1982 | US4356269 Plant for the production of methane |
| 10/26/1982 | US4356268 Microorganism for treating waste water |
| 10/26/1982 | US4356131 Circulating device for liquids containing long-chain molecules |
| 10/26/1982 | US4356092 Method for treating waste water |
| 10/26/1982 | CA1134302A1 Fermenter or reactor for zootechnic liquid materials |
| 10/20/1982 | EP0062848A1 Method and apparatus for the sanification of surface waters |
| 10/19/1982 | US4354937 Process for precipitating heavy metals from wastewater |
| 10/19/1982 | US4354936 Anaerobic digestion process |
| 10/19/1982 | CA1133840A1 De-emulsification agents of microbiological origin |
| 10/13/1982 | EP0062388A1 A method and installation for anaerobic fermentation of liquid manure |
| 10/13/1982 | EP0062232A1 Apparatus for sewage purification |
| 10/12/1982 | US4353800 Aerobic and anaerobic processes |
| 10/12/1982 | US4353717 Introducing as bubbles in downward flowing water stream |
| 10/06/1982 | EP0061813A1 Dynamic anaerobic equipment for waste water treatment |
| 10/05/1982 | US4352886 Process for treating wastewater containing phenolics and microorganism capable of degrading phenolics |
| 10/05/1982 | US4352738 Anaerobic filter |