| Patents for C02F 3 - Biological treatment of water, waste water, or sewage (46,453) |
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| 08/22/1979 | EP0003548A1 Apparatus for biological purification of waste water |
| 08/22/1979 | EP0003547A1 Process for the biological treatment of waste water |
| 08/21/1979 | US4165286 Apparatus for the intermittent aeration of sewage |
| 08/21/1979 | US4165285 Combined anaerobic reactor and settler |
| 08/21/1979 | US4165281 Method and unit for wastewater treatment by microorganisms |
| 08/21/1979 | US4165038 Device for atomizing and dispersing a fluid |
| 08/21/1979 | CA1061021A1 Apparatus for the aerobic treatment of liquid waste |
| 08/21/1979 | CA1061020A1 Phosphorus removal from wastewater |
| 08/21/1979 | CA1060623A1 Contact packing |
| 08/14/1979 | CA1060590A1 Methods and apparatus for controlling the supply of feed gas to dissolution devices |
| 08/14/1979 | CA1060589A1 Treatment of solids-liquid-gas mixtures |
| 08/14/1979 | CA1060375A1 Apparatus for desalinating sea water |
| 08/07/1979 | US4163720 Apparatus for the biological purification of waste water |
| 08/07/1979 | US4163712 Treatment of liquid |
| 08/07/1979 | US4163631 Surface aerator impeller |
| 08/07/1979 | CA1060126A1 Anaerobic waste treatment process employing recycle of purified effluent |
| 07/31/1979 | US4163035 Aquarium water aeration device |
| 07/31/1979 | US4162976 Sewage disposal system |
| 07/31/1979 | US4162971 Injectors with deflectors for their use in gassing liquids |
| 07/31/1979 | US4162970 Injectors and their use in gassing liquids |
| 07/31/1979 | CA1059659A1 Liquid treatment apparatus having parallel rotating baffles |
| 07/24/1979 | US4162195 To determine whether purification by microorganisms is possible |
| 07/24/1979 | US4162153 High nitrogen and phosphorous content biomass produced by treatment of a BOD-containing material |
| 07/24/1979 | US4162147 Apparatus for treating effluents |
| 07/17/1979 | CA1058776A1 Modular aerator and separator assembly for sewage treatment facility |
| 07/11/1979 | EP0002858A1 Sanitation process and apparatus for continually overloaded water treatment plants |
| 07/11/1979 | EP0002769A1 Process for biological purification of waste water |
| 07/11/1979 | EP0002698A1 Process and apparatus for the biological purification of highly contaminated waste waters |
| 07/10/1979 | US4160736 Treating waste water |
| 07/10/1979 | US4160724 Waste water treatment |
| 07/10/1979 | US4160723 Method and apparatus for removal of pollutants from waste water |
| 07/10/1979 | CA1058158A1 Gas sparger with axially adjustable elements |
| 07/10/1979 | CA1058051A1 Composition for converting hydrocarbons and fats into biodegradable aqueous emulsions and a process for the preparation of the composition |
| 07/03/1979 | US4159945 Method for denitrification of treated sewage |
| 07/03/1979 | US4159944 Chelation of heavy metals from fertilizers |
| 07/03/1979 | CA1057867A1 Process for total sewage treatment |
| 07/03/1979 | CA1057866A1 Microbiological method for removing pathogenic microbes and dissolved organic materials from liquids |
| 07/03/1979 | CA1057673A1 Scum skimmer with buoyant chamber support |
| 07/03/1979 | CA1057647A1 Flow control aerator |
| 06/27/1979 | EP0002543A1 Solid particles containing calcium peroxide, their preparation and their utilisation for the treatment of water |
| 06/27/1979 | EP0002490A1 Device for aerating aqueous liquids, especially liquid manure or sewage |
| 06/26/1979 | US4159243 Sewage treatment |
| 06/26/1979 | CA1057431A1 Rotary surface aerators |
| 06/26/1979 | CA1057430A1 Apparatus and process for removing ammonia nitrogen from waste water |
| 06/26/1979 | CA1057429A1 Methods of treating waste materials |
| 06/19/1979 | CA1056965A1 Biological intermediate sewage treatment with ozone pretreatment |
| 06/19/1979 | CA1056963A1 Process and apparatus for removing impurities dissolved in water |
| 06/13/1979 | EP0002369A1 Aerator and method of aerating liquid |
| 06/12/1979 | US4157958 Biodegradation |
| 06/12/1979 | CA1056518A1 Filtration means and method |
| 06/05/1979 | US4157304 Aeration method and system |
| 06/05/1979 | US4157303 Biological waste water treatment apparatus and a method of producing the same |
| 06/05/1979 | CA1055864A1 Method for rendering bacteria dormant and the product produced thereby |
| 05/30/1979 | EP0002115A1 Closed loop waste treatment and water recycling toilet system and method of operation |
| 05/30/1979 | EP0002008A1 Process for the biological purification of waste water |
| 05/29/1979 | US4156650 Treatment of liquids |
| 05/22/1979 | US4155959 Apparatus for the removal of gases, especially air, in fluids |
| 05/22/1979 | US4155810 Thiobacillus |
| 05/22/1979 | CA1055169A1 Support medium for biological treatment |
| 05/17/1979 | WO1979000262A1 Flow control apparatus and process for an oxidation ditch |
| 05/16/1979 | EP0001792A1 Process for treating waste water |
| 05/15/1979 | US4154685 Gravity flow septic tank system |
| 05/15/1979 | CA1054729A1 Treatment of biologically-degradable material |
| 05/15/1979 | CA1054728A1 Coal-base landfill, leachate treatment |
| 05/08/1979 | US4153544 Method of treating organic waste water |
| 05/08/1979 | CA1054268A1 Treatment of oil drilling effluents_ |
| 05/08/1979 | CA1054267A1 Biological treatment of plant waste streams to remove cyanuric acid |
| 05/08/1979 | CA1053918A1 Pre-coated refuse-coal filter for landfill refuse treatment |
| 05/01/1979 | US4152409 Method for carrying out air oxidation and for adding fine bubbles to a liquid |
| 05/01/1979 | US4152259 Aerating waste water |
| 05/01/1979 | US4152082 Device for driving an agitator, more particularly an aerator for waste water |
| 05/01/1979 | CA1053766A1 Waterproof electrical connector |
| 04/24/1979 | US4151231 Rotary surface aerators |
| 04/24/1979 | US4151075 Separation of components of a fluid mixture |
| 04/18/1979 | EP0001470A1 A process for enzymatic treatment of waste water of wheat starch plants |
| 04/17/1979 | USRE29970 Single stage biological treatment unit |
| 04/17/1979 | USRE29969 Single stage biological treatment |
| 04/17/1979 | US4149972 Waste water treating apparatus |
| 04/17/1979 | CA1052918A1 Aerobic treatment in an enclosure divided into a peripheral settling zone and a central activation zone |
| 04/10/1979 | US4148726 Process for treatment of sewage in a gravity sewer |
| 03/27/1979 | US4146478 Closed spiral path waste water treatment system |
| 03/27/1979 | US4146470 Use of microorganisms in combination with surface active agents to synergistically disperse oil slicks |
| 03/27/1979 | CA1051564A1 Method and apparatus for purifying liquor containing biodegradable wastes |
| 03/22/1979 | WO1979000129A1 Purifying process and device for waste waters in a multi-stage filtering installation |
| 03/21/1979 | EP0001101A2 Process and apparatus for the purification of waste water in a multistage filter device |
| 03/20/1979 | US4145383 Slurry aeration method and apparatus |
| 03/20/1979 | US4145279 Digestion, demineralization |
| 03/20/1979 | CA1051063A1 Method of and apparatus for generating mixed and atomized fluids |
| 03/13/1979 | US4144167 Sewage treatment system |
| 03/13/1979 | CA1050587A1 Rotating gas diffuser |
| 03/07/1979 | EP0000861A1 Process for the purification of organically polluted, calcium containing wastewater |
| 03/06/1979 | US4142975 Apparatus for the treatment of sewage |
| 03/06/1979 | CA1050178A1 Method and device for oxidizing and purifying water |
| 02/27/1979 | US4141824 Tangentially fed upflow sand filter method and apparatus |
| 02/27/1979 | US4141823 Treatment of waste water |
| 02/27/1979 | US4141822 Aeration to reduce oxygen demand and cause microorganisms present to take up phosphate |
| 02/27/1979 | CA1049667A1 Disposal of biological sludge from pulp mills |
| 02/20/1979 | US4140737 Device for a vessel for aerating liquids having a foam-forming tendency |
| 02/20/1979 | CA1049162A1 Method for the biological purification of effluent and the plant for carrying out the process |
| 02/13/1979 | US4139579 Apparatus for introducing air into a liquid including a liquid pump mounted within an aerator pressure chamber |