| Patents for C02F 9 - Multistep treatment of water, waste water or sewage (41,429) |
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| 07/15/1999 | WO1999035095A1 Flowthrough batch liquid purifier |
| 07/15/1999 | WO1999034926A1 Method for recovering and separating metals from waste streams |
| 07/14/1999 | CN2328655Y Purifying device for waste water |
| 07/08/1999 | WO1999033752A1 A method and a system for purifying water |
| 07/08/1999 | WO1999033539A1 Water purification filter |
| 07/08/1999 | DE19800335A1 Preparing dehydrated products especially food and pharmaceuticals, with reuse of waste water |
| 07/08/1999 | CA2316222A1 A method and a system for purifying water |
| 07/07/1999 | EP0862538B1 Process and device for treating water contaminated with micro-organisms and/or harmful pollutants |
| 07/07/1999 | EP0824504B1 Improved destruction of electron affinic contaminants during water treatment using free radical processes |
| 07/06/1999 | US5919982 Process and apparatus for the removal of aromatic amines from soil and water |
| 07/06/1999 | US5919374 Method of disinfecting water with iodine species |
| 07/06/1999 | US5919357 Filter cartridge assembly |
| 07/01/1999 | WO1999032409A1 Apparatus and method arranged to provide controllable water treatment customized to the conditions of water supplied to a beverage dispenser |
| 06/30/1999 | EP0926100A2 Process for purification of waste waters from aldol condensation reaction with following hydrogenation |
| 06/30/1999 | CN2326596Y Direct drinking-water deep-processing production apparatus |
| 06/30/1999 | CN1220976A Method for producing magnetized ozone water and its device |
| 06/30/1999 | CN1220971A Process for cleaning up wastewaters from aldolization reaction which is followed by hydrogenation |
| 06/29/1999 | US5916439 Advanced safe water treatment system |
| 06/29/1999 | US5916437 Domestic sewage cleaning system |
| 06/24/1999 | CA2257386A1 Process for cleaning up wastewaters from an aldolization reaction which is followed by hydrogenation |
| 06/23/1999 | EP0924184A2 A method for treating an effluent containing sorbic acid and/or a salt thereof and an effluent disposal device |
| 06/23/1999 | EP0923505A1 Method and equipment for off-shore treatment of communal sewage water |
| 06/23/1999 | CN2325381Y Apparatus for purifying drinking water |
| 06/22/1999 | US5915161 Microbe stunning device for a biological decontamination system |
| 06/22/1999 | US5914284 System for generating methane gas from sewer sludge and process utilizing same |
| 06/22/1999 | US5914040 Process for the purification of a medium containing organic waste |
| 06/22/1999 | CA2184991C Alkaline diamine track lubricants |
| 06/16/1999 | EP0922678A1 Waste treatment of metal plating solutions |
| 06/16/1999 | EP0921722A1 Automated closed recirculating aquaculture filtration system |
| 06/16/1999 | CN1219511A Treatment method and equipment for super-purified water |
| 06/16/1999 | CN1219510A Technical method for saving water and reducing pollution of water supply and drainage system in paper mill |
| 06/15/1999 | US5911884 Contamination proof purified water dispenser and method of using same |
| 06/15/1999 | US5911882 Water treatment for contact with iron solutions with support material and drying |
| 06/10/1999 | WO1999028514A1 Bioremediation of waste streams containing dissolved metals such as neptunium by two-stage bio-reduction/extraction |
| 06/10/1999 | WO1999028241A1 Water decontaminating system and method |
| 06/10/1999 | WO1999028240A1 METHOD AND APPARATUS FOR ADJUSTING THE pH OF A LIQUID |
| 06/10/1999 | WO1999027972A1 Water sterilization system incorporating ultrasonic device |
| 06/10/1999 | WO1999021801B1 Method for water purification based on the fenton reaction |
| 06/10/1999 | DE19753386A1 Water treatment plant to recover water following bottle washing |
| 06/10/1999 | CA2312798A1 Method and apparatus for adjusting the ph of a liquid |
| 06/09/1999 | CN1218770A Light oxidation equipment and method for water treatment system of semiconductor device |
| 06/08/1999 | US5910237 Process for recovering organic hydroxides from waste solutions |
| 06/05/1999 | CA2251480A1 Waste treatment of metal plating solutions |
| 06/02/1999 | CN2321775Y 水生成器 Water generator |
| 06/02/1999 | CN1218444A Process for treating scrubbing water from gas scrubbing process in iron ore reduction plant |
| 06/01/1999 | US5908559 Method for recovering and separating metals from waste streams |
| 06/01/1999 | US5908550 Water reclamation system for a vehicle wash system |
| 06/01/1999 | US5907958 Refrigerator water filter |
| 05/25/1999 | US5906749 Method for recovering metals from solutions |
| 05/25/1999 | CA2058623C Method of purifying lacustrine water and filthy water purification boat |
| 05/20/1999 | WO1999024363A1 Method and device for the production of pure water |
| 05/19/1999 | EP0916620A2 Desalting aqueous streams via filled cell electrodialysis |
| 05/19/1999 | CN2319401Y Magnetized ozone water appts. |
| 05/14/1999 | WO1999023036A1 Method for removing hydrophobic impurities using cleavable nonionic surfactants |
| 05/14/1999 | WO1999022933A1 System for extracting soluble heavy metals from liquid solutions |
| 05/14/1999 | WO1999022581A1 Installation for the purification of liquid manures and the like |
| 05/12/1999 | EP0915059A1 Process for the electrochemically controlled absorption of soluble organic substances and of heavy metal ions extracted from aqueous solutions, and corresponding apparatus |
| 05/12/1999 | EP0914295A1 Process for treating the scrubbing water from the gas scrubbing process in an iron ore reduction plant |
| 05/06/1999 | WO1999021801A1 Method for water purification based on the fenton reaction |
| 05/06/1999 | DE19748396A1 Verfahren zur Entfernung hydrophober Verunreinigungen mittels spaltbarer nichtionischer Tenside Process for the removal of hydrophobic contaminants using the cleavable nonionic surfactants |
| 05/04/1999 | US5900143 Portable container for purifying drinking water |
| 05/04/1999 | US5900141 Water purifier having accumulating means arranged to prevent backward water flow |
| 05/04/1999 | US5900116 Zeolite crystalloid coagulant is added to water containing the solid matter, a source of multivalent cations, and a cationic acrylamide polymer. |
| 05/04/1999 | CA2117754C Mercury contaminated mud treatment |
| 04/29/1999 | WO1999020572A1 Water reclamation system for a vehicle wash system |
| 04/29/1999 | WO1999020569A1 Process for removing selenium from refinery process water and wastewater streams |
| 04/29/1999 | WO1999020568A1 Biodegradable complexing agents for heavy metals |
| 04/29/1999 | CA2308191A1 Biodegradable complexing agents for heavy metals |
| 04/29/1999 | CA2307707A1 Process for removing selenium from refinery process water and waste water streams |
| 04/28/1999 | CN2316315Y Combined efficient sewage purifier |
| 04/28/1999 | CN1215382A Process for biological purification of waste water |
| 04/28/1999 | CA2234541A1 Removing metals from aqueous waste streams |
| 04/21/1999 | EP0909140A2 Device for treatment of possibly contaminated sludge occurring in sanitary facilities |
| 04/21/1999 | EP0876299A4 Liquid sterilisation apparatus |
| 04/21/1999 | CN2315116Y Water purifier |
| 04/21/1999 | CN1214322A Preparation method and equipment of Liuhuan function water |
| 04/15/1999 | WO1999018294A1 Drinking water treatment installation |
| 04/15/1999 | WO1999018041A1 Recovery of the components of group iii-v material aqueous wastes |
| 04/15/1999 | WO1999018040A1 Water purifying and dispensing apparatus |
| 04/15/1999 | WO1999018038A1 Installation for biochemichal sewage treatment |
| 04/15/1999 | DE19744700A1 Removal of phenolic compounds from wastewater, using lignolytic enzymes for removal or organic substances, prior to treatment with polychromatic light radiation |
| 04/15/1999 | DE19744675A1 Drinking water treatment plant assembled from modular units chosen to meet volume throughput and chemical characteristics of water |
| 04/15/1999 | DE19744490A1 Table water supply delivered by carbon filter arranged in series with second filter |
| 04/15/1999 | CA2305776A1 Water purifying and dispensing apparatus |
| 04/15/1999 | CA2305186A1 Installation for biochemichal sewage treatment |
| 04/08/1999 | WO1998057897A9 Oxygenated water cooler |
| 04/07/1999 | CN2312929Y Rare-earth magnitizing ionic-water machine |
| 04/07/1999 | CN2312928Y Multifunction health-care domestic water-purifying device |
| 04/07/1999 | CN1213347A Off-shore sewage treating and transport apparatus and method thereof |
| 04/06/1999 | US5891345 Destroying organic compounds |
| 04/06/1999 | US5891330 Waste treatment system |
| 04/06/1999 | US5891320 Forming an alkaline solution, acidification, precipitation and filtration |
| 04/06/1999 | CA2217416A1 Thermal exchange electronic module and water purifier including same |
| 03/31/1999 | EP0904155A1 Drinking water filtration system |
| 03/31/1999 | CN2312231Y Wastewater treatment equipment coverd-up with earth |
| 03/31/1999 | CN1212240A Peppermint pure water and its preparing technology |
| 03/31/1999 | CN1212239A Leather-making waste water treatment method |
| 03/30/1999 | US5888404 Dissolving, oxidation, filtration, precipitation, filtration; pollution control |
| 03/30/1999 | US5888389 Apparatus for oxidizing undigested wastewater sludges |
| 03/30/1999 | US5888382 Filtration tank and means for subsequent purification of waste water |