| Patents for C02F 3 - Biological treatment of water, waste water, or sewage (46,453) |
|---|
| 02/26/1980 | US4190539 Apparatus for on-site renovation of sanitary waters |
| 02/26/1980 | US4190495 Modified microorganisms and method of preparing and using same |
| 02/26/1980 | CA1072691A1 Method for the removal of nitrogen compounds in water |
| 02/20/1980 | EP0008176A1 A method of recovering heat from waste water in a purifying plant and a purifying plant for carrying out the method |
| 02/20/1980 | EP0008074A1 Process for the chemical and biological treatment of waste water |
| 02/19/1980 | US4189384 Gas treatment of liquid |
| 02/19/1980 | CA1072224A1 Phosphate removal from bod-containing wastewater |
| 02/12/1980 | US4188289 Process for purification of sanitary waters |
| 02/12/1980 | CA1071777A1 Activated sludge system with staggered partition basin |
| 02/07/1980 | WO1980000148A1 Process for eliminating toxic substances contained in waste waters |
| 02/06/1980 | EP0007783A1 Fluidized-bed reactor having excess growth control system |
| 02/06/1980 | EP0007489A1 Process and apparatus for carrying out (bio)chemical reactions in a gas/liquid-system |
| 02/05/1980 | US4187263 Liquid circulating device |
| 01/29/1980 | US4185680 Process for producing useful concentrated slurries from waste material |
| 01/23/1980 | EP0007168A1 Process for methane and ammonia extraction from organic waste |
| 01/22/1980 | US4184947 Treatment of sewage effluent |
| 01/22/1980 | US4184946 Comprised of synthetic resin, agitation |
| 01/22/1980 | US4184789 Wastewater treatment system |
| 01/22/1980 | CA1070442A1 Biofilter |
| 01/15/1980 | US4183810 Automatic control of oxygen demand supply to final denitrification step by continuous analysis of nitrite-plus-nitrate content |
| 01/15/1980 | US4183809 Process for removing organic substances and nitrogen compounds from waste water |
| 01/15/1980 | US4183808 Activated sludge and oxygen-containing gas, concentrating solids resolubliizing sludge , returning sludge to aeration with out phosphate removal |
| 01/15/1980 | US4183807 Treatment of waste water rich in nutrients |
| 01/15/1980 | US4183787 Circulation of gas/liquid mixtures |
| 01/15/1980 | CA1069833A1 Sewage treatment tank and tube settler |
| 01/09/1980 | EP0006597A1 Process and apparatus for the aeration of water |
| 01/08/1980 | US4182675 Waste treatment process |
| 01/01/1980 | US4181614 Sludge removal apparatus |
| 01/01/1980 | US4181604 Aerobic microorganisms supported on hollow prous fibers supplied with oxygen |
| 01/01/1980 | US4181451 Device for disposal of animal excrement |
| 01/01/1980 | CA1069227A Aerobic type sewage digestion system |
| 01/01/1980 | CA1069226A Waste treatment and solids separating system |
| 12/25/1979 | CA1068833A Vortex coagulation means and method for wastewater clarification |
| 12/18/1979 | US4179376 Device for purification of liquids |
| 12/18/1979 | US4179375 Aeration of waste in septic tank |
| 12/18/1979 | US4179374 Apparatus for the treatment of wastewater |
| 12/18/1979 | US4179366 Method for the biological purification of effluent and the plant for carrying out the process |
| 12/18/1979 | US4179365 Process for treating waste water |
| 12/18/1979 | US4179220 Apparatus for anaerobic digestion of biodegradable waste material |
| 12/13/1979 | WO1979001095A1 Device for decomposing substances contained in sludge and waste waters |
| 12/12/1979 | EP0005703A1 Process for the preparation of fuel and nutritive substances from wastes |
| 12/11/1979 | US4178239 Biological intermediate sewage treatment with ozone pretreatment |
| 12/11/1979 | CA1068018A1 Apparatus for aerobic treatment of activated sludge |
| 12/04/1979 | US4177246 In organic fulorine-containing inert liquid |
| 12/04/1979 | US4177226 Device for injection of a gas in a liquid |
| 12/04/1979 | US4177147 Biological treating systems |
| 12/04/1979 | US4177144 Excess-growth control system for fluidized-bed reactor |
| 12/04/1979 | CA1067626A1 Method of purifying waste water |
| 12/04/1979 | CA1067395A1 Circulation of gas/liquid mixtures |
| 11/28/1979 | EP0005650A1 Fluidized bed reactor with fluidizing fluid flow distributors |
| 11/28/1979 | EP0005553A1 Device for the conversion of materials present in waste water and waste water sludges |
| 11/27/1979 | CA1067220A2 Method for bubble shearing |
| 11/27/1979 | CA1067219A1 Activated sludge treatment of wastewater and apparatus therefor |
| 11/27/1979 | CA1067218A1 Process and apparatus for the aerobic biological purification of liquid wastes containing organic pollutants |
| 11/20/1979 | CA1066823A1 Diffuser device |
| 11/20/1979 | CA1066822A1 Apparatus and method for aerating liquids |
| 11/15/1979 | WO1979000958A1 Aeration propeller and apparatus |
| 11/15/1979 | WO1979000895A1 Water treating device |
| 11/13/1979 | CA1066438A1 Removal of bod and nitrogenous pollutants from wastewaters |
| 11/06/1979 | US4173531 Treatment with activated sludge containing bacteria |
| 11/01/1979 | WO1979000864A1 An arrangement in apparatus for mixing gases with and dissolving gases in liquids |
| 10/31/1979 | EP0005082A2 Microbial nitrate removal from tobacco materials by dissimilatory denitrification |
| 10/31/1979 | EP0004934A1 A plant for biological purification of waste water |
| 10/30/1979 | US4172799 Conic deflector unit |
| 10/30/1979 | US4172781 Waste water process for treatment of strong wastes |
| 10/30/1979 | CA1065508A1 Sewage treatment - flotation apparatus |
| 10/23/1979 | US4172034 Method and apparatus for integrated local treatment of biologically degradable waste |
| 10/17/1979 | EP0004528A2 Biological treatment of waste water |
| 10/16/1979 | US4171263 Pressurized oxygenation of sewage |
| 10/16/1979 | US4170797 Apparatus for treating waste matter |
| 10/16/1979 | CA1064628A1 Arrangement for conversion of foreign matter contained in water |
| 10/09/1979 | CA1064170A1 Apparatus for renovation of sanitary waters |
| 10/09/1979 | CA1064169A1 Process for purification of waste water |
| 10/04/1979 | WO1979000719A1 Method for the production of methane and a plant for carrying out the method |
| 10/03/1979 | EP0004397A1 Process for removing melamine from melamine-containing liquids |
| 10/03/1979 | EP0004304A1 Reduction treatment of chemical substances, in particular of waste water ingredients, with the aid of respiratory microorganisms or preparations produced therefrom |
| 10/02/1979 | US4169873 Fluid circulating device |
| 10/02/1979 | US4169791 Apparatus and process for volume reduction of aqueous waste through solar evaporation |
| 10/02/1979 | CA1063739A1 Purification of non-biodegradable industrial wastewaters |
| 10/02/1979 | CA1063738A1 Water purifying device without movable mechanical part in contact with the liquid to be treated |
| 10/02/1979 | CA1063481A1 Pneumatic sewage ejector |
| 09/25/1979 | US4169050 Buoyant contact surfaces in waste treatment pond |
| 09/25/1979 | US4169049 Using bacteria biofilter containing coniferous bark to decompose chlorinated phenol pollutants |
| 09/25/1979 | US4169048 Anaerobic fermentation of excreta in a collapsible bag |
| 09/25/1979 | CA1063265A1 Liquid aeration device |
| 09/25/1979 | CA1063264A1 Phosphate stripping of sewage |
| 09/25/1979 | CA1063263A1 Continuous introduction of oxygen-containing gases into effluent containing activated sludge |
| 09/18/1979 | US4168233 Settleometer for testing samples |
| 09/18/1979 | US4168228 Waste water purification |
| 09/18/1979 | US4167973 Mixing with oxidizing agent or bactericide |
| 09/18/1979 | CA1062820A1 Process for the purification of waste water |
| 09/18/1979 | CA1062545A1 Self-priming centrifugal pump |
| 09/11/1979 | US4167479 Treatment with a mineral reactive system |
| 09/11/1979 | CA1062381A1 Aerobic sewage treatment unit |
| 09/11/1979 | CA1062380A1 Waste water treatment |
| 09/06/1979 | WO1979000640A1 System for processing used waters by the biological process of activated sludge |
| 09/05/1979 | EP0003787A1 Waste water aeration basin |
| 09/04/1979 | US4166791 Sewage gas collection reservoir |
| 09/04/1979 | US4166790 Single stage process for continuous introduction of oxygen-containing gases into effluent containing activated sludge |
| 08/28/1979 | CA1061241A1 Trickling filters media for biological filters |