| Patents for C02F 1 - Treatment of water, waste water, or sewage (145,124) |
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| 04/01/1998 | CN1177573A Compound extraction agent for treatment of sponated foul water |
| 03/31/1998 | US5734944 Apparatus for rejuvenating developer in printing plate development |
| 03/31/1998 | US5734098 Method to monitor and control chemical treatment of petroleum, petrochemical and processes with on-line quartz crystal microbalance sensors |
| 03/31/1998 | US5733857 Detergents; pigment dispersion; water treatment; fabric treatment |
| 03/31/1998 | US5733463 Lowering the pH with an acid/base salt as a pH adjusting agent |
| 03/31/1998 | US5733462 Cationic water-soluble polymer precipitation in salt solutions |
| 03/31/1998 | US5733461 Process for the treatment of waste material suspensions |
| 03/31/1998 | US5733448 Manually pressurized water filtering container |
| 03/31/1998 | US5733434 Apparatus and method for cleaning semiconductor wafers |
| 03/31/1998 | CA2110919C Method for removing oil spills using a natural, recyclable absorbent |
| 03/31/1998 | CA2004299C Biological contactor for purifying water to produce drinking water and associated control method |
| 03/26/1998 | WO1998012489A1 Purified water supply apparatus |
| 03/26/1998 | WO1998012144A1 Electrolytic treatment of aqueous salt solutions |
| 03/26/1998 | WO1998012143A1 Process for cleaning wastewater and recirculating water in paper production, de-inking and bleaching of pulp |
| 03/26/1998 | WO1998011987A1 Electrodeionization apparatus and method |
| 03/26/1998 | WO1998011985A1 Calcium aluminate based catalyst and use of the catalyst |
| 03/26/1998 | WO1998011980A1 Membrane system for treating sanitary wastewater |
| 03/26/1998 | DE19638594A1 Verfahren zur Reinigung von Abwässern und Kreislaufwässern bei der Papierherstellung, dem Deinking und der Zellstoffbleiche A process for the purification of waste waters and circulation waters in papermaking, the deinking and pulp bleaching |
| 03/26/1998 | CA2266637A1 Membrane system for treating sanitary wastewater |
| 03/25/1998 | EP0831076A1 Porous ceramics provided with amorphous pore surfaces and method for treating drain water and waste liquid by the use of same |
| 03/25/1998 | EP0831063A2 Device for releasing fine bubbles of gas into a liquid |
| 03/25/1998 | EP0831062A1 Use of the linear alkylbenzene sulfonate as a biofouling control agent |
| 03/25/1998 | EP0831061A1 Recovery of alcohol from silicone resin manufacturing waste water |
| 03/25/1998 | EP0830508A1 Ocean thermal energy conversion (otec) system |
| 03/25/1998 | EP0830388A1 Ion exchange polymers for anion separations |
| 03/25/1998 | EP0830384A1 Process for producing dispersions of water-soluble vinyl polymers and stabiliser for implementing the process |
| 03/25/1998 | EP0830207A1 Process and device for the treatment of waste water from the wet dedusting of shredders |
| 03/25/1998 | EP0830205A1 Water treatment tablet producing potable water |
| 03/25/1998 | EP0830193A1 Microwave assisted cleaning and reclamation of industrial wastes |
| 03/25/1998 | EP0666834B1 Methods for generating residual disinfectants during the ozonization of water |
| 03/25/1998 | CN2276938Y Separating equipment for papermaking white water |
| 03/25/1998 | CN2276937Y High efficiency large capacity and high cloudiness sewage purifying unit |
| 03/25/1998 | CN2276936Y Appts. for preparing strong acidated water |
| 03/25/1998 | CN2276935Y Solar energy distiller |
| 03/25/1998 | CN1176940A Method for treatment of organic sewerage |
| 03/25/1998 | CN1176939A Method and device for continuous and stable releasing chlorine dioxide |
| 03/25/1998 | CN1176938A Electrolytic hydrogen dissolved water, and method and apparatus of production thereof |
| 03/25/1998 | CN1176937A Devcie for controlling effluent of water purifier |
| 03/24/1998 | US5731008 Electrically hydrolyzed salines as microbicides |
| 03/24/1998 | US5730918 Aluminum hydroxide or oxide |
| 03/24/1998 | US5730884 Method of removing selenate ion from selenate ion-containing aqueous waste liquid |
| 03/24/1998 | US5730882 Method for remediation of water containing emulsified oils |
| 03/24/1998 | US5730880 Forming flexible polyurethane foam |
| 03/24/1998 | US5730879 Process for conditioning recirculated evaporative cooling water |
| 03/24/1998 | US5730874 Extraction of metals using supercritical fluid and chelate forming legand |
| 03/24/1998 | US5730864 Installation for treating an untreated flow by simple sedimentation after ballasting with fine sand |
| 03/24/1998 | US5730856 Method for treating waste liquid with electrolytic oxidation and apparatus for carrying out the same |
| 03/24/1998 | US5730784 Oxidation to sulfur dioxide |
| 03/24/1998 | US5730558 Liquid hydrocarbon sorbing and solidifying pillow |
| 03/24/1998 | US5730178 Device for introducing substances into water |
| 03/24/1998 | US5729987 Desalinization method and apparatus |
| 03/20/1998 | CA2216321A1 Porous ceramics provided with amorphous pore surfaces and method for treating drain water and waste liquid by the use of same |
| 03/20/1998 | CA2215726A1 Device for fining bubbles contained in liquid |
| 03/19/1998 | WO1998011183A1 Process for removing fine iron containing particles from liquids containing the same |
| 03/19/1998 | WO1998011024A1 Apparatus for water treatment and purification |
| 03/19/1998 | WO1998011023A1 Process for disinfecting organic waste sludge |
| 03/19/1998 | WO1998011022A1 Water treatment apparatus for scale prevention |
| 03/19/1998 | WO1998010851A1 Separation and purification of fluoride from industrial waste |
| 03/19/1998 | DE19637660A1 Physical water treatment, e.g. tap water |
| 03/19/1998 | CA2185872A1 Apparatus and method for an anodic oxidation biocidial treatment |
| 03/18/1998 | EP0829549A1 Process for the removal of heavy metal impurities from a concentrated alkali chloride solution down to a rest value of 0,01 ppm |
| 03/18/1998 | EP0829305A2 Flotation type separator |
| 03/18/1998 | EP0829010A1 Method to monitor and control chemical treatment of petroleum, petrochemical and processes with on-line quartz crystal microbalance sensors |
| 03/18/1998 | EP0828779A1 Water-soluble polymers and compositions thereof |
| 03/18/1998 | EP0828639A1 Vehicle treatment process and installation |
| 03/18/1998 | EP0828552A1 Process for recovery of metal ions |
| 03/18/1998 | EP0716624B1 Filtering device |
| 03/18/1998 | CN2276498Y Practical carbon dioxide generator |
| 03/18/1998 | CN2276379Y Crude oil pre-dehydrate, sewage unoilding hydrocyclone |
| 03/18/1998 | CN1176633A Electrocoalescent system for decontaminating water streams |
| 03/18/1998 | CN1176632A Improved lamp cooling for a UV lamp reactor assembly |
| 03/18/1998 | CN1176631A Wiper cartridge |
| 03/18/1998 | CN1176227A Household water treater |
| 03/18/1998 | CN1176226A Alkali decrement process for waste water processing |
| 03/18/1998 | CN1037763C Method for preparation of pure cupric sulfate by using copper-contained waste liquid from preparation of guaiacol |
| 03/18/1998 | CN1037762C Process for producing compound poly-ferric aluminium sulfate |
| 03/18/1998 | CN1037750C 净水器 Water Purifier |
| 03/18/1998 | CN1037749C Water purification device |
| 03/18/1998 | CN1037748C Side-stream inclined plate sink-float solid-liquid separation method and its equipment |
| 03/17/1998 | US5728305 Waste water purification system |
| 03/17/1998 | US5728304 Method and apparatus for dissolved air flotation and related waste treatments |
| 03/17/1998 | US5728303 Electro-coalescence/magnetic separation (ECMS) system and components for removal of contaminants from water streams, including desalinization |
| 03/17/1998 | US5728300 Phytorecovery of metals using seedlings |
| 03/17/1998 | US5728295 Apparatus for removing metal ions and/or complexes containing metal ions from a solution |
| 03/17/1998 | US5728287 Method and apparatus for generating oxygenated water |
| 03/17/1998 | US5728274 Production system of electrolyzed water |
| 03/17/1998 | US5727578 Apparatus for the treatment and drying of semiconductor wafers in a fluid |
| 03/12/1998 | WO1998010146A1 Absorption means |
| 03/12/1998 | WO1998010033A1 Solvent for solid crude oil deposits |
| 03/12/1998 | WO1998009998A1 Polyacrylamide polymerisation |
| 03/12/1998 | WO1998009918A1 A process and apparatus for treating waste water |
| 03/12/1998 | WO1998009917A1 Plant for the electro-chemical cleaning of water and/or aqueous solutions |
| 03/12/1998 | WO1998009916A1 Water purification system and ultrapure water product |
| 03/12/1998 | WO1998009724A1 A crude oil (oil products) adsorbent and the method of producing it |
| 03/12/1998 | WO1998009722A1 Corona method and apparatus for altering carbon containing compounds |
| 03/12/1998 | WO1998009718A1 Modular filtration system |
| 03/12/1998 | WO1997041066A3 Water treatment device with fill-counting cartridge |
| 03/12/1998 | DE19636171A1 Apparatus for the electrolysis of water |
| 03/12/1998 | CA2264915A1 A process and apparatus for treating waste water |
| 03/12/1998 | CA2263463A1 Polyacrylamide polymerisation |