| Patents for C02F 3 - Biological treatment of water, waste water, or sewage (46,453) |
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| 05/04/1982 | US4328104 Anaerobic fermentati3n of predigested sludge mixed with an emulsion; sewage treatment |
| 04/29/1982 | WO1982001419A1 Method and installation for withdrawing biodegradable and poisonous substances from aqueous solutions,for example effluents |
| 04/28/1982 | EP0050532A1 Aerator with horizontal shaft for the purification of waste waters |
| 04/27/1982 | US4327042 Fermenter |
| 04/27/1982 | CA1122728A1 Long vertical shaft bioreactor with pressurized head tanks |
| 04/27/1982 | CA1122727A1 Waste water aeration tank |
| 04/27/1982 | CA1122726A1 Lagoon barrier |
| 04/21/1982 | EP0049954A1 Biochemical process for purifying contaminated water |
| 04/21/1982 | EP0049887A2 Method and apparatus for determining toxic biological consumable substances in aqueous solutions, for instance in sewage |
| 04/20/1982 | US4325823 Aerobic septic tank |
| 04/14/1982 | EP0049265A1 Pond with filtered water |
| 04/13/1982 | US4324657 Apparatus for the treatment of liquids |
| 04/13/1982 | US4324656 Installation for the withdrawal and purification treatment of waters and aqueous effluents |
| 04/13/1982 | US4324655 Apparatus for treating wastewater with oxygen |
| 04/13/1982 | CA1121806A1 Mass transfer in liquid media |
| 04/07/1982 | EP0049154A1 In place gas cleaning of diffusion elements |
| 04/07/1982 | EP0048875A1 Apparatus for admixing a gas to a liquid, in particular for admixing oxygen to polluted water |
| 04/06/1982 | US4323649 Biotransformations using methane-utilizing bacteria |
| 04/06/1982 | US4323367 Gas production by accelerated in situ bioleaching of landfills |
| 03/31/1982 | EP0048683A1 Method and apparatus for the purification of pollutant residues |
| 03/31/1982 | EP0048675A1 Apparatus for the treatment of biochemical waste |
| 03/31/1982 | EP0048630A1 Treatment of sewage |
| 03/31/1982 | EP0048257A1 Procedure for impriving the ecological state of a thermally and/or chemically stratified water basin |
| 03/31/1982 | EP0048249A1 Mariculture filtering system |
| 03/30/1982 | US4322377 Surface aerating rotor |
| 03/30/1982 | US4322296 Method for wastewater treatment in fluidized bed biological reactors |
| 03/30/1982 | CA1121074A1 Arrangement in apparatus for admixing gases with and dissolving gases in liquids |
| 03/30/1982 | CA1120869A1 Oxidation tank for sewage treatment apparatus |
| 03/29/1982 | EP0041565A4 Improved anaerobic and aerobic digestion of waste and biomass by use of lactobacillus culture additives. |
| 03/24/1982 | EP0048148A1 Process of and digester for anaerobic treatment of waste water |
| 03/24/1982 | EP0047956A1 Removal of scale from porous diffusion tiles |
| 03/24/1982 | EP0047921A1 Process and apparatus for the aeration of a liquid, especially waste water |
| 03/23/1982 | US4321142 Composition and method for stimulation of aerobic bacteria |
| 03/23/1982 | US4321141 Method for processing waste |
| 03/23/1982 | CA1120618A1 Bio-surface separation process |
| 03/23/1982 | CA1120415A1 Cellulose fermentation process |
| 03/17/1982 | EP0047719A1 Method for the decomposition of derivatives of 2,4-dihydroxy-6-amino-s triazine |
| 03/17/1982 | EP0047677A2 A method and apparatus for continuously separating solids and liquids in a solids-liquid mixture |
| 03/16/1982 | US4319998 For clog prevention |
| 03/16/1982 | US4319949 Machine for heat sealing polymeric sheets into a spiral drum |
| 03/16/1982 | CA1120163A1 Process for methane and ammonia extraction from organic waste |
| 03/16/1982 | CA1119948A1 Apparatus and process for dissolution of gases in liquid |
| 03/16/1982 | CA1119766A1 Water treatment apparatus |
| 03/10/1982 | EP0046901A1 Method and apparatus for the anaerobic biological purification of waste water |
| 03/10/1982 | EP0046900A1 Method and apparatus for the biological purification of waste water |
| 03/09/1982 | US4318993 Two phase anaerobic digester system |
| 03/09/1982 | US4318988 Process for biological denitrification of effluents |
| 03/09/1982 | US4318871 Mounting ring construction for surface aerator apparatus |
| 03/09/1982 | US4318810 Apparatus for the conversion of pollutants contained in effluents and effluent sludges |
| 03/04/1982 | WO1982000633A1 Device and method for cleaning waste water |
| 03/02/1982 | US4317885 Microbiological process for removing non-ionic surface active agents, detergents and the like from wastewater and microorganism capable of same |
| 03/02/1982 | US4317731 Gas absorber |
| 03/02/1982 | US4317723 Sewage treatment |
| 03/02/1982 | CA1119323A1 Apparatus for the anaerobic purification of waste water |
| 03/02/1982 | CA1119322A1 Sewage disposal system |
| 02/24/1982 | EP0046313A1 Device and method for cleaning waste water |
| 02/24/1982 | EP0046276A1 Purification apparatus for waste water |
| 02/17/1982 | EP0045939A1 Apparatus for the aeration of domestic and/or industrial sewage |
| 02/16/1982 | US4315823 Filtration and setting |
| 02/16/1982 | US4315821 Treatment of nitrogenous wastes |
| 02/16/1982 | CA1118378A1 Process for removing melamine from melamine-containing liquids |
| 02/16/1982 | CA1118377A1 Biologically denitrified effluents |
| 02/10/1982 | EP0045614A1 Biodegradation of carbonaceous materials |
| 02/09/1982 | US4314904 Anaerobic digestion of waste and biomass by use of lactobacillus culture additives |
| 02/02/1982 | US4313898 Radial injector for aspiration of gases |
| 02/02/1982 | US4313827 Enhanced disinfection system |
| 02/02/1982 | CA1117669A1 Process for the secondary treatment of wastewater |
| 02/02/1982 | CA1117668A1 Method and apparatus for processing waste |
| 01/27/1982 | EP0044498A1 Apparatus for the gasification of liquids or suspensions |
| 01/27/1982 | EP0044382A1 Floating apparatus for water purification |
| 01/26/1982 | CA1117043A1 Process for effecting enzymatic conversions |
| 01/26/1982 | CA1117042A1 High nitrogen and phosphorous content biomass produced by treatment of a bod containing material |
| 01/21/1982 | WO1982000157A1 Fermentation modules |
| 01/21/1982 | WO1982000135A1 Waste treatment apparatus |
| 01/21/1982 | WO1982000134A1 Apparatus for treating liquids |
| 01/19/1982 | US4311597 Method and apparatus for treatment of wastewater |
| 01/19/1982 | US4311593 Anaerobic digestion, production of methane |
| 01/19/1982 | CA1116764A1 Detoxification of residual quaternaries |
| 01/19/1982 | CA1116762A1 Process for treating cyanide and cyanate-containing wastewaters |
| 01/13/1982 | EP0043579A1 Biological sewage treatment apparatus of the rotary disc type |
| 01/12/1982 | CA1116323A1 Apparatus and a method for biological treatment of waste waters |
| 01/12/1982 | CA1116322A1 Apparatus for the treatment of impure liquids |
| 01/05/1982 | US4309285 Deodorizing and decoloring |
| 12/30/1981 | EP0042620A1 Apparatus for conditioning liquid manure |
| 12/30/1981 | EP0042396A1 Method and apparatus for dissolving gas in a liquid |
| 12/29/1981 | US4308221 Apparatus for mixing a gas and a liquid |
| 12/29/1981 | US4308144 Using inflow conduit collapsable under pressure of fluid waste already in shaft |
| 12/29/1981 | US4308138 To simultaneously aerate, and disperse a treating agent |
| 12/29/1981 | US4308137 Water aeration and circulation apparatus |
| 12/29/1981 | CA1115435A1 Plant for biological purification of waste water |
| 12/29/1981 | CA1115434A1 Wastewater purification |
| 12/29/1981 | CA1115433A1 Method for protecting a bioreactor pressurized head tank against extreme surges of influent waste water |
| 12/29/1981 | CA1115432A1 Aerobic/anaerobic sludge digestion process |
| 12/22/1981 | US4307196 Fermenter of reactor for zootechnic liquid materials |
| 12/22/1981 | US4306969 Apparatus for sewage purification |
| 12/22/1981 | US4306968 For aerobic digestion |
| 12/22/1981 | CA1114965A1 Long vertical shaft bioreactor with modified waste liquor injection |
| 12/22/1981 | CA1114964A1 Plant for the treatment of waste water by the activated-sludge process |
| 12/22/1981 | CA1114963A1 Means for separation of gas and solids from waste mixed liquor |
| 12/22/1981 | CA1114962A1 Long vertical shaft bioreactor of simplified design |