| Patents for C02F 103 - Nature of the water, waste water, sewage or sludge to be treated (11,124) |
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| 03/31/1998 | CA2004299C Biological contactor for purifying water to produce drinking water and associated control method |
| 03/25/1998 | CN1176938A Electrolytic hydrogen dissolved water, and method and apparatus of production thereof |
| 03/04/1998 | EP0826636A1 Water containing dissolved electrolytic hydrogen, and method and apparatus of production thereof |
| 02/04/1998 | EP0648193B1 Process and system for purifying waste water |
| 12/09/1997 | US5695719 Self-contained, immersible |
| 09/23/1997 | US5670615 Quaternized tertiary aminomethyl acrylamide polymer microemulsions with improved performance |
| 09/09/1997 | US5665245 By negative pressure generated by jet pump; water treatment |
| 08/06/1997 | EP0580595B1 Aqueous phase removal of nitrogen from nitrogen compounds |
| 07/30/1997 | EP0626931B1 Process, machine and plant for extraction by evaporation of the solid residues of a fluid substance |
| 05/06/1997 | US5627260 Quaternized tertiary aminomethyl acrylamide polymer microemulsions with improved performance |
| 04/16/1997 | CN1147801A Process for removing polluting material from water or wet solid matter |
| 04/02/1997 | EP0765332A1 Process for removing waste pox alendronate and its by-products |
| 04/01/1997 | US5616240 Device for sewage clarification |
| 03/19/1997 | EP0656871B1 Aqueous suspensions of colloidal particles, preparation and use of the suspensions |
| 03/12/1997 | EP0569372B1 Waste handling method |
| 03/11/1997 | US5609768 Process for separating and/or recovering hydrocarbon oils from water using biodegradable absorbent sponges |
| 03/04/1997 | US5607552 Silica-based anionic particles, smectite |
| 02/26/1997 | EP0759012A1 Process for removing polluting material from water or wet solid matter |
| 02/12/1997 | CN1142810A Vaporizing and concentration drying apparatus and method |
| 02/06/1997 | WO1997003928A1 Process for treating a surplus activated sludge |
| 02/06/1997 | CA2224683A1 Process for treating a surplus activated sludge |
| 01/16/1997 | WO1997001513A1 Method of treating waste sludge |
| 01/16/1997 | CA2223009A1 Method of treating waste sludge |
| 12/25/1996 | CN1138835A Oil-absorbing article |
| 11/06/1996 | EP0740582A1 Oil-absorbing article |
| 09/11/1996 | EP0730561A1 Vaporizing and concentration drying apparatus and method |
| 09/03/1996 | US5551987 Process for the biological treatment of solid waste and mud contaminated by hydrocarbons |
| 08/01/1996 | WO1996022947A1 Method of removing heavy metals from water, a colloidal system for purifying water and a method of producing the said system |
| 07/17/1996 | EP0471784B1 Method and composition for treating waste water |
| 05/21/1996 | US5518619 Process for removing sulphur compounds from water |
| 05/01/1996 | CN1121746A Device for analyzing a fluid medium |
| 04/17/1996 | EP0706659A1 Device for analyzing a fluid medium |
| 04/09/1996 | US5505862 Subjecting to aerobic treatment following heavy medium separator and a downstream anaerobic treatment with precisely controlled circulation |
| 04/02/1996 | US5504124 Process for removing unwanted material from wanted material |
| 03/20/1996 | EP0701537A1 Method for removing soluble metals from an aqueous phase |
| 03/13/1996 | EP0700873A1 Waste water treatment method, suspensed matter separation method, and method for saturating a liquid with a gas |
| 02/15/1996 | WO1996004055A1 Device for desalinating liquids |
| 02/07/1996 | CN1116420A Water purifier, especially for domestic use |
| 01/10/1996 | EP0690822A1 Water purifier, especially for domestic use |
| 01/03/1996 | EP0579711B1 Method for removing sulphur compounds from water |
| 12/27/1995 | EP0514543B1 Sewage purification apparatus |
| 12/14/1995 | WO1995033755A1 PROCESS FOR REMOVING WASTE POx, ALENDRONATE AND ITS BY-PRODUCTS |
| 12/14/1995 | CA2191772A1 Process for removing waste pox, alendronate and its by-products |
| 12/12/1995 | US5474682 Method for removing sulphur compounds from water |
| 11/29/1995 | EP0632746A4 Electrolytic cell for generating sterilization solutions having increased ozone content. |
| 11/28/1995 | US5470460 Apparatus for the purification of cyanide-containing waste water |
| 11/23/1995 | WO1995031402A1 Process for removing polluting material from water or wet solid matter |
| 11/02/1995 | EP0594800B1 Device for removing purified water from circular settling tanks |
| 09/12/1995 | US5449819 Process for removing waste pox, alendronate and its by products |
| 08/29/1995 | US5445741 Treatment with chlorine-releasing substance to partially oxidize wastes, heat treatment, oxidizing again with ozone or hydrogen peroxide, adsorption with activated carbon |
| 08/23/1995 | EP0668242A1 Device for the uniformly distributed removal of purified water from the circumference of a circular settling tank |
| 08/02/1995 | EP0494861B1 Process for treatment of water and apparatus therefor |
| 07/27/1995 | WO1995019842A1 Oil-absorbing article |
| 07/27/1995 | CA2181071A1 Oil-absorbing article |
| 06/28/1995 | EP0641292A4 Water clarifier with first filtrate isolation, improved backwashing and improved bubble generation. |
| 06/14/1995 | EP0656871A1 Aqueous suspensions of colloidal particles, preparation and use of the suspensions. |
| 06/07/1995 | EP0656234A1 Process for the biological treatment of solid waste and mud contaminated by hydrocarbons |
| 06/01/1995 | WO1995014640A1 Vaporizing and concentration drying apparatus and method |
| 04/19/1995 | EP0648193A1 Process and system for purifying waste water |
| 03/15/1995 | CN1100068A A method for removing suspended impurities |
| 03/14/1995 | US5397476 Purification of solutions |
| 03/08/1995 | EP0641292A1 Water clarifier with first filtrate isolation, improved backwashing and improved bubble generation |
| 02/28/1995 | US5393428 Process for treating waste water containing chlorinated organic compounds from production of epichlorohydrin |
| 02/28/1995 | US5393426 Method for removing soluble metals from an aqueous phase |
| 01/31/1995 | US5385711 Electrolytic cell for generating sterilization solutions having increased ozone content |
| 01/11/1995 | EP0632746A1 Electrolytic cell for generating sterilization solutions having increased ozone content |
| 01/10/1995 | US5380443 Reducing concentration of zinc, copper and silver ions therein by adjusting pH to 11-12, mixing water with mixture of alkali or alkaline earth ferrate and zirconium oxychloride to form precipitate, separating purified supernatant |
| 01/03/1995 | US5377423 Sludge dehydrating press and method for treating sludge |
| 12/22/1994 | WO1994029226A1 Method for removing soluble metals from an aqueous phase |
| 12/22/1994 | CA2163666A1 Method for removing soluble metals from an aqueous phase |
| 12/21/1994 | CN1096498A Method and apparatus for treating waste water from chlorhydrin biology and containing organic chloride compound |
| 12/07/1994 | EP0626931A1 Process, machine and plant for extraction by evaporation of the solid residues of a fluid substance. |
| 11/10/1994 | WO1994025875A1 Device for analyzing a fluid medium |
| 10/12/1994 | EP0436715B1 Process for separating and/or recovering hydrocarbon oils from water using biodegradable absorbent sponges |
| 09/27/1994 | US5350511 Sewage purification apparatus |
| 09/13/1994 | US5346616 Apparatus for pathogen reduction in waste |
| 08/31/1994 | EP0567601B1 Process and device for purifying sewage |
| 08/17/1994 | EP0610955A2 Quaternized aminomethyl acrylamide polymermicroemulsions, methods of producing and use of same |
| 08/13/1994 | CA2115412A1 Quaternized tertiary aminomethyl acrylamide polymer microemulsions with improved performance |
| 08/03/1994 | EP0524245B1 Process and apparatus for pathogen reduction in waste |
| 07/27/1994 | CN1089924A Method for treatment of waste water |
| 07/21/1994 | WO1994015876A1 Water purifier, especially for domestic use |
| 07/20/1994 | CN1089675A Aqueous suspensions of colloidal particles, preparation and use of the suspensions |
| 07/19/1994 | US5330650 Dispersion polymers for oil field water clarification |
| 07/06/1994 | EP0604904A1 Process for the treatment of waste water by chemical oxydation |
| 07/06/1994 | EP0494866B1 Process and device for treating, in particular cleaning, water containing halogenated ethylenes |
| 06/23/1994 | WO1994013588A1 Process for purifying waste water containing chlorlignin |
| 06/22/1994 | CN1088184A Dispersion polymers for oil field water clarification |
| 06/14/1994 | US5320750 Water clarifier with first filtrate isolation, improved backwashing and improved bubble generation |
| 05/31/1994 | US5316740 Electrolytic cell for generating sterilization solutions having increased ozone content |
| 05/11/1994 | CN1086457A Sludge dehydrating press and method for treating sludge |
| 05/04/1994 | EP0595156A1 Process for oil field water clarification using cationic dispersion polymers |
| 05/04/1994 | EP0594800A1 Device for removing purified water from circular settling tanks. |
| 04/19/1994 | US5304311 Absorption by an ethylene-alpha-olefin copolymer |
| 03/17/1994 | WO1994005595A1 Aqueous suspensions of colloidal particles, preparation and use of the suspensions |
| 03/16/1994 | EP0587080A1 Sludge dehydrating press and method for treating sludge |
| 03/16/1994 | EP0586998A1 Process and device for the treatment of waste water containing organic matter, especially chlorinated organic compounds from the production of epichlorohydrine |
| 03/12/1994 | CA2105410A1 Sludge dehydrating press and method for treating sludge |
| 02/02/1994 | EP0580595A1 Aqueous phase removal of nitrogen from nitrogen compounds. |
| 01/26/1994 | EP0579711A1 Method for removing sulphur compounds from water. |