| Patents for C02F 9 - Multistep treatment of water, waste water or sewage (41,429) |
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| 03/08/1995 | EP0641240A1 Ecological water-treatment device |
| 03/02/1995 | WO1995006011A1 Method of incinerating sludge resulting from waste-water treatment |
| 03/02/1995 | WO1995006009A1 Device for purifying waste water or ground water and use thereof |
| 03/02/1995 | WO1995006004A1 Treatment method for waste water sludge comprising at least one metal |
| 03/02/1995 | CA2170372A1 Device for purifying waste water or ground water, and its use |
| 03/02/1995 | CA2131240A1 Treatment of pulp and paper wastewater with reducing agent and a polymer for color removal |
| 03/01/1995 | EP0640568A1 Improved process for waste water treatment by removal of sodium sulfate |
| 03/01/1995 | CA2131125A1 Process for waste water treatment by removal of sodium sulfate |
| 02/28/1995 | US5393548 Method of making coffee using water filtration device |
| 02/28/1995 | US5393428 Process for treating waste water containing chlorinated organic compounds from production of epichlorohydrin |
| 02/28/1995 | US5393417 Water remediation and purification system and method |
| 02/23/1995 | WO1995005237A1 Water treatment system |
| 02/22/1995 | EP0639162A1 Process and device for destroying free and complex cyanides, aox, mineral oil, complexing agents, csb, nitrite, chromate, and for separating metals from waste waters |
| 02/22/1995 | EP0639158A1 Method for purifying process water or wastewater containing wood resin. |
| 02/22/1995 | EP0639157A1 System for treating polluted groundwater. |
| 02/22/1995 | EP0553138B1 Use of polyether-chain-containing compounds produced from epoxidised carboxylic acid derivatives for removing printing inks from waste paper and/or paper circuit water |
| 02/22/1995 | CN1098960A Home water purification system |
| 02/21/1995 | US5391297 Process for gas treatment and degermination and apparatus for simultaneously degerminating and treating a liquid with gas |
| 02/16/1995 | WO1995004705A1 Treatment apparatus for improving the quality of drinking water by filtration and disinfection |
| 02/15/1995 | EP0638523A1 Water sterilising device especially for use by dentists and physicians |
| 02/14/1995 | US5389254 Water treatment system |
| 02/09/1995 | WO1995004002A1 Treatment of cyanides in effluents with caro's acid |
| 02/09/1995 | DE4427478A1 Process and plant for treating salt brine |
| 02/08/1995 | EP0637570A1 Treatment of solid and liquid effluents from tan-yards for removing and recovering the chromium contained in the effluents |
| 02/08/1995 | CN2189152Y Aerobic filtration tank with inflated aeration |
| 02/01/1995 | CN2188581Y Multi-function desalination device |
| 01/31/1995 | US5385664 Apparatus for producing ultrapure water |
| 01/25/1995 | EP0635458A1 Process for purification of acid or alkaline waste waters and liquid raw condensates, particularly of condensates from flue gases of combustion plants burning fossil fuels |
| 01/24/1995 | US5384032 Water purifying and sterilizing apparatus |
| 01/19/1995 | WO1995001936A1 Fluid treatment method |
| 01/19/1995 | DE4417614A1 Process and device for treating waste water from a refuse-processing device |
| 01/18/1995 | EP0634364A1 Pure water manufacturing method |
| 01/18/1995 | EP0633846A1 Method for automatic washing of vehicles |
| 01/17/1995 | US5382366 Retardation installation with compressed air-diaphragm pump and stroke count device |
| 01/12/1995 | WO1995001305A1 Method of treating aqueous alkaline effluents derived from cleaning electronic circuit assemblies |
| 01/12/1995 | WO1995001231A1 Improved soil washing process for removing heavy metal impurities and use of selected acid-resistant membranes therefor |
| 01/12/1995 | DE4322663A1 Process for cleaning up mining waters |
| 01/12/1995 | CA2140909A1 Method of treating aqueous alkaline effluents derived from cleaning electronic circuit assemblies |
| 01/11/1995 | EP0633227A1 Process for treating waste waters from manufacture of lead accumulators |
| 01/11/1995 | EP0633224A1 Apparatus for making hexagonal and pentagonal molecular structure water |
| 01/11/1995 | CN1097180A Water-circulation type vacuum spring-water making device |
| 01/10/1995 | US5380471 Aeration apparatus for producing ultrapure water |
| 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 |
| 01/10/1995 | US5380441 Removal of chromium from solution using mechanically agitated iron particles |
| 01/06/1995 | CA2127179A1 Apparatus for making hexagonal and pentagonal molecular structure water |
| 01/05/1995 | WO1995000608A1 Composition for inhibiting stress cracks in plastic articles and methods of use therefor |
| 01/04/1995 | EP0631988A1 Process for purification of waste waters from aldol condensation reaction |
| 01/04/1995 | CN2186751Y Multifunction water purifier |
| 01/03/1995 | US5378366 Hot lime precipitation of arsenic from wastewater or groundwater |
| 01/03/1995 | US5378339 Water electrolyzer |
| 12/28/1994 | EP0630671A2 Sewage treatment system |
| 12/28/1994 | EP0630267A1 Treatment of liquid on demand |
| 12/27/1994 | US5376285 In presence of catalytically effective metal chelate from group of porphyrins, corrinoids, tetrapyridinoporphyrazines and phthalocyanines |
| 12/21/1994 | EP0441938B1 Process and installation for extracting fat and/or protein-containing material from fat-containing liquid material, in particular from slaughter deposits and waste |
| 12/21/1994 | CN1096498A Method and apparatus for treating waste water from chlorhydrin biology and containing organic chloride compound |
| 12/20/1994 | US5374356 Purifying wastewater |
| 12/20/1994 | US5374341 Water electrolyzer |
| 12/20/1994 | CA1333640C Process and apparatus for removing impurities from water used in food processing utilizing a mixture of ozone and air |
| 12/15/1994 | DE4319974A1 Process for decreasing the toxicity of Cr(VI)-contaminated solid and liquid waste materials |
| 12/15/1994 | DE4319644A1 Disposal unit |
| 12/13/1994 | US5372724 Adding ferrous and ferric sulfate, cationic polymer to oxidize and adsorb; volatilizing oils and grease; precipitation, filtration |
| 12/13/1994 | US5372722 For separation of oil and fat from liquid mixture of cleaning or degreasing solutions; compactness, heat resistance |
| 12/08/1994 | WO1994027912A1 Method for purifying chlorophenol-containing waters |
| 12/08/1994 | WO1994027711A1 Multi-stage water treatment system |
| 12/08/1994 | CA2163784A1 Multi-stage water treatment system |
| 12/07/1994 | EP0627269A1 Process for treating contaminated soils, sludges or the like |
| 12/07/1994 | EP0626932A1 Dissolved air flotation |
| 12/06/1994 | US5370801 Method for treating polluted material |
| 12/06/1994 | US5370800 Method for removing metal compounds from waste water |
| 11/30/1994 | EP0625958A1 Ozone generator having an electrode formed of a mass of helical windings and associated method |
| 11/30/1994 | CN1095695A Biochemical treatment for antibiotics waste water |
| 11/30/1994 | CN1095692A Nitro-diazophenol wasted water treatment process |
| 11/29/1994 | US5369072 Iron compound |
| 11/29/1994 | US5368741 Treatment of aqueous phosphorus wastes |
| 11/29/1994 | US5368703 Electrolytic demetallization wiith iron alloy electrodes |
| 11/29/1994 | US5368632 Redox polymer films for metal recovery applications |
| 11/23/1994 | EP0625482A1 Method and installation for the purification of an aqueous effluent by oxidation on a sorbent support |
| 11/23/1994 | CN2183367Y Ultraviolet sterilizing water-purifying device |
| 11/22/1994 | US5366619 Germfree drinking water dispenser |
| 11/16/1994 | CN1095047A Producing process for purification, clearing, oxygenation and bioactivation treatments of drinking water |
| 11/15/1994 | US5364605 Acidification, stripping, adsorption in alkaline solution |
| 11/15/1994 | US5364534 Purifying water |
| 11/15/1994 | US5364509 Wastewater treatment |
| 11/15/1994 | CA1333106C Process for removal of inorganic and cyanide contaminants from wastewater |
| 11/10/1994 | WO1994025405A1 Method of treating waste water containing organic and inorganic compounds, particularly waste water arising from the manufacture of epichlorohydrin |
| 11/10/1994 | WO1994025402A1 Process and apparatus for the treatment of waste water |
| 11/10/1994 | WO1994025401A1 Water purification unit |
| 11/09/1994 | EP0623561A1 Process and device for decontaminating a liquid effluent containing ionic metals |
| 11/09/1994 | CN1094699A Tandem waste stream treatment for the removal of nitroaromatics and nitrophenolics |
| 11/08/1994 | US5362400 Process for the purification of water |
| 11/08/1994 | US5362395 Recirculating retention phase concentrated with substances in sewage through membrane filter until concentrate with desired amount of materials hard to decompose biologically is obtained and treating concentrate physically or chemically first |
| 11/08/1994 | US5362394 Excavating into aquifer, recepticle containing active material in path of plume to transform or breakdown of contaminents by chemical reaction into harmless precipitates/substances |
| 11/08/1994 | CA1332986C Septic tank effluent processing vapourizer |
| 11/03/1994 | DE4312179A1 Process for recovering metal from cyanide-containing waste waters |
| 11/02/1994 | EP0622338A1 A method for purifying industrial sewage water |
| 11/01/1994 | US5360551 Reduction of dyes with bisulfites and hydrosulfites |
| 11/01/1994 | US5360522 Biocatalyst-immobilized electrode and method for treatment of water by use of the electrode |
| 11/01/1994 | US5360514 Treatment of bleach plant filtrations using a magnesium filter |
| 10/27/1994 | WO1994024059A1 Process and device for processing and/or dewatering sludge liquor from waste water tanks, in particular small sewerage purification plants |
| 10/26/1994 | EP0621241A2 Solution decontamination method using precipitation and flocculation techniques |