| Patents for C02F 101 - Nature of the contaminant (7,129) |
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| 02/28/1995 | US5393426 Method for removing soluble metals from an aqueous phase |
| 02/15/1995 | EP0637983A1 Device and method to separate the components in mixtures of non-miscible liquids |
| 01/17/1995 | US5382265 Forming potassium perchlorate with potassium chloride by salt formation |
| 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 |
| 12/27/1994 | EP0641252A4 Compositions and processes for removing, separating and concentrating desired ions from solutions. |
| 12/22/1994 | WO1994029227A1 Process for purifying sulphide-containing waste water |
| 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 |
| 11/22/1994 | US5366633 Process for the treatment of water containing sulphur compounds |
| 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 |
| 09/08/1994 | DE4409435A1 Apparatus and process for the simultaneous biological elimination of phosphorus and nitrogen from wastewater |
| 08/31/1994 | EP0567601B1 Process and device for purifying sewage |
| 08/18/1994 | WO1994018132A1 Strains of acinetobacter species (bicoccum), arthrobacter species and rhodococcus species and a process using the said strains for the biological treatment of oil pollution |
| 08/18/1994 | WO1994018129A1 Wastewater treatment process and apparatus |
| 08/10/1994 | CN1090556A Wasterwater treatment process and apparatus |
| 07/27/1994 | CN1089924A Method for treatment of waste water |
| 07/19/1994 | US5330650 Dispersion polymers for oil field water clarification |
| 07/13/1994 | EP0477338B1 Process for the treatment of water containing sulphur compounds |
| 07/13/1994 | CN1089241A Oxidation of ammonium ions and organic carbon in wastewaters |
| 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 |
| 06/01/1994 | EP0599182A1 Process for oxidation of ammonium ions and organic carbon in waste water |
| 05/26/1994 | WO1994011315A1 Metal accumulation |
| 05/26/1994 | CA2109879A1 Oxidation of ammonium ions and organic carbon in wastewaters |
| 05/04/1994 | EP0595156A1 Process for oil field water clarification using cationic dispersion polymers |
| 04/28/1994 | WO1994008902A1 Process for separating a hydrophobic liquid from a liquid contaminated therewith |
| 04/28/1994 | CA2147143A1 Process for separating a hydrophobic liquid contaminated therewith |
| 04/19/1994 | US5304311 Absorption by an ethylene-alpha-olefin copolymer |
| 04/12/1994 | US5302298 Wet oxidation with ozone-containing gas and ultraviolet radiation |
| 04/05/1994 | US5300677 Method of preparing insoluble hydrolysable tannin and method of treating waste liquid with the tannin |
| 03/22/1994 | US5296629 Recovering heavy metal from waste liquid by contacting with insoluble hydrolyzable tannin to adsorb metal on tannin, separating tannin, extracting metal with dilute mineral acid |
| 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 |
| 02/08/1994 | CA1326840C Method and apparatus for electrolytic treatment of liquids, especially waste water |
| 02/02/1994 | EP0580636A1 Catalysed hypochlorite decomposition process. |
| 02/02/1994 | EP0580595A1 Aqueous phase removal of nitrogen from nitrogen compounds. |
| 01/26/1994 | EP0579711A1 Method for removing sulphur compounds from water. |
| 01/20/1994 | WO1994001368A1 Process and system for purifying waste water |
| 01/20/1994 | CA2139412A1 Process and system for purifying waste water |
| 01/18/1994 | US5279740 Ground contamination remediation process |
| 12/28/1993 | US5274169 Method of preparing insoluble hydrolysable tannin and method of treating waste liquid with the tannin |
| 12/23/1993 | WO1993025481A1 Process and apparatus for purifying streams |
| 12/23/1993 | CA2136869A1 Process and apparatus for purifying streams |
| 12/15/1993 | CN1079449A Nethod for removing sulphur compounds from water |
| 12/09/1993 | WO1993024199A1 Method for removing alkaline sulfate scale |
| 11/25/1993 | WO1993023335A1 Water clarifier with first filtrate isolation, improved backwashing and improved bubble generation |
| 11/11/1993 | WO1993022023A1 Device and method to separate the components in mixtures of non-miscible liquids |
| 11/03/1993 | CN1078014A Ground contamination remediation process and apparatus |
| 10/19/1993 | CA1323311C Water purifying system |
| 09/02/1993 | WO1993016962A1 Apparatus for the purification of cyanide-containing waste water |
| 09/02/1993 | CA2157035A1 Apparatus for the purification of cyanide containing waste water |
| 08/17/1993 | US5236557 Acidifying, stripping, alkalinzing, stripping again |
| 08/04/1993 | EP0478583B1 Process and device for treating polluted fluids |
| 07/21/1993 | EP0551978A2 Ground contamination remediation process and apparatus |
| 07/21/1993 | CN1021657C Transition metal recovery |
| 06/29/1993 | CA2015879C Process for treatment of water and apparatus therefor |
| 06/29/1993 | CA1319606C Control of biofouling in aqueous systems by non-polymeric quaternary ammonium polyhalides |
| 06/22/1993 | US5221486 Aqueous phase removal of nitrogen from nitrogen compounds |
| 06/09/1993 | EP0545050A2 Process for the non-polluting removal, of petroliferons products from land or aquatic surfaces and oil-adsorbent |
| 06/07/1993 | CA2081958A1 Procedure for environmentally benign removal of oil substances similar to oil from the surface of water or the ground and an oil absorber suitable for this procedure |
| 04/21/1993 | CN1071146A Method for control of biofouling |
| 04/07/1993 | EP0535301A1 Method for the control of biofouling |
| 04/01/1993 | WO1993006234A1 Method of cleaning soil polluted with oil and petroleum products |
| 03/03/1993 | EP0530118A2 Method for adsorbing and separating heavy metal elements by using a tannin adsorbent and method of regenerating the adsorbent |
| 02/24/1993 | EP0527908A1 New formulations for iron oxides dissolution |
| 02/18/1993 | WO1993002791A1 Compositions and processes for removing, separating and concentrating desired ions from solutions |
| 02/10/1993 | EP0527096A2 Method of preparing insoluble hydrolysable tannin and method of treating waste liquid with the tannin |
| 02/08/1993 | CA2074796A1 Method of preparing insoluble hydrolysable tannin and method of treating waste liquid with the tannin |
| 01/27/1993 | EP0524674A1 Method for removing hydrocarbon products from the surface of an acqueous medium |
| 01/13/1993 | EP0522856A1 Purification of solutions |
| 12/23/1992 | WO1992022506A1 Process and device for purifying sewage |
| 12/22/1992 | US5173470 Compositions and processes for removing, separating and concentrating desired ions from solutions using sulfur and aralkyl nitrogen containing ligands bonded to inorganic supports |
| 11/25/1992 | EP0514543A1 Sewage purification apparatus |
| 11/19/1992 | EP0513352A1 Method of cleaning soil water |
| 11/12/1992 | WO1992019543A1 Method and device for purification of wastewater |
| 10/29/1992 | WO1992018426A1 Aqueous phase removal of nitrogen from nitrogen compounds |
| 10/29/1992 | WO1992018235A1 Catalysed hypochlorite decomposition process |
| 10/27/1992 | US5158711 Insoluble tannin preparation process, waste treatment process employing insoluble tannin and adsorption process using tannin |
| 10/05/1992 | WO1992017410A1 Method for removing sulphur compounds from water |
| 08/05/1992 | EP0471784A4 Method and composition for treating waste water |
| 08/04/1992 | US5135655 Process for treating refinery slurries |
| 07/22/1992 | EP0494866A1 Process and device for treating, in particular cleaning, water containing halogenated ethylenes. |
| 07/22/1992 | EP0494861A1 Process for treatment of water and apparatus therefor. |
| 07/15/1992 | EP0283509B1 The control of biofouling in aqueous systems by non-polymeric quaternary ammonium polyhalides |
| 07/07/1992 | US5128051 Method for the control of biofouling |
| 07/01/1992 | EP0492329A1 Process for the treatment of hydrogen sulfide, hydrogen cyanide and ammonia containing aqueous solutions |
| 07/01/1992 | EP0492188A2 Polyelectrolyte complexes |
| 05/19/1992 | US5114473 Transition metal recovery |
| 05/14/1992 | WO1992007799A1 Method to detoxify sewage sludge |
| 05/13/1992 | CN1061012A Method to detoxigy sewage sludge |
| 05/12/1992 | US5112501 Acidification, basification to reduce chemical oxygen demand |
| 05/06/1992 | EP0484268A1 Method to detoxify sewage sludge |
| 05/01/1992 | CA2041039A1 Method to detoxify sewage sludge |
| 04/22/1992 | EP0481541A1 Process for treating refinery slurries |
| 04/14/1992 | US5104549 Waste treatment process for alkaline waste liquid |