| Patents for C02F 1 - Treatment of water, waste water, or sewage (145,124) |
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| 04/15/1998 | EP0835845A1 Apparatus for aerobic biological treatment of aqueous organic wastes |
| 04/15/1998 | EP0835844A2 Device for dosing hydrogen peroxide containing aqueous solutions |
| 04/15/1998 | EP0835843A2 Device for mixing a flocculation liquid in a sewage sludge stream and use of the device |
| 04/15/1998 | EP0835605A1 Phenylamides as marine antifouling agents |
| 04/15/1998 | EP0835604A1 Halopropargyl compounds as marine antifouling agents |
| 04/15/1998 | EP0835225A1 Enzymatic method for the oxidative breakdown of fluorescent compounds |
| 04/15/1998 | EP0835224A1 Process for removing unwanted material from wanted material |
| 04/15/1998 | EP0775032B1 An indexable insert |
| 04/15/1998 | CN2278690Y Continuous strong oxidation ion water producer |
| 04/15/1998 | CN2278689Y Ion water producer |
| 04/15/1998 | CN2278688Y Direct water purifier with mineral filter material and Chinese medicine layer in pipeline |
| 04/15/1998 | CN2278687Y Health refrigerating mineral spring machine |
| 04/15/1998 | CN2278686Y Equipment for high-efficiency purifying waste water and sewage |
| 04/15/1998 | CN2278685Y Multifunctional defluorinating water-purifying machine |
| 04/15/1998 | CN1179115A Method of desalinating saline water and apparatus thereof |
| 04/15/1998 | CN1179113A Method and apparatus for separatin non-soluble particles from liquid |
| 04/15/1998 | CN1178776A Technology for treating waste water of paper making |
| 04/15/1998 | CN1178775A Novel flocculant |
| 04/15/1998 | CN1178774A Method of purifying water and apparatus therefor |
| 04/15/1998 | CN1178773A Super grade high efficiency water purifier |
| 04/14/1998 | US5739304 Process for the preparation of water-soluble aminoalkyl derivatives of polysaccharides |
| 04/14/1998 | US5739190 Process for the preparation of stable water-in-oil emulsions of hydrolyzed polymers of N-vinyl amides and the use thereof |
| 04/14/1998 | US5739031 Soil and water remediation and enhancement process and apparatus therefor |
| 04/14/1998 | US5738795 Reducing turbidity by adding a water soluble copolymer of alginates and ethyltrimethylammonium acrylate chloride salt |
| 04/14/1998 | US5738794 Cationic water-soluble polymer preciptation in salt solutions |
| 04/14/1998 | US5738793 Using zeolites coated with silane compounds as solid sorbents |
| 04/14/1998 | US5738780 Voltage converter for water treatment system UV bulb |
| 04/14/1998 | US5738778 Method related to the sterilization of microorganisms and/or to the mineralization of organic substances including microbic metabolites in a ground region and in the ground water by means of electric current |
| 04/14/1998 | US5738775 Core-sheath structure ion exchange nonwoven fabric substrate for desalting compartment; desalting water, production of pure water in electrical power, including nuclear power, generating industries |
| 04/14/1998 | US5738766 Device for neutralizing and preventing formation of scale and method |
| 04/14/1998 | US5738761 Sewage treatment process and apparatus |
| 04/11/1998 | CA2216765A1 Halopropargyl compounds as marine antifouling agents |
| 04/11/1998 | CA2216764A1 Phenylamides as marine antifouling agents |
| 04/09/1998 | WO1998014490A1 Cationic water-soluble polymer precipitation in salt solutions |
| 04/09/1998 | WO1998014483A1 Anionic water-soluble polymer precipitation in salt solution |
| 04/09/1998 | WO1998014405A1 Aqueous dispersions |
| 04/09/1998 | WO1998014404A1 Method for cleaning surfaces contaminated by crude oil or petroleum product spills, sorbant for cleaning surfaces and method for producing the same |
| 04/09/1998 | WO1998014272A1 Magnetohydrodynamic sterilization apparatus and method |
| 04/09/1998 | WO1998014258A1 Water and wastewater treatment system with internal recirculation |
| 04/09/1998 | DE19703018A1 Anaerobic fermentation of clarifier sludge - by physical-chemical de:flocculation of the sludge |
| 04/09/1998 | CA2268075A1 Anionic water-soluble polymer precipitation in salt solution |
| 04/09/1998 | CA2268070A1 Cationic water-soluble polymer precipitation in salt solutions |
| 04/09/1998 | CA2267465A1 Magnetohydrodynamic sterilization apparatus and method |
| 04/09/1998 | CA2264803A1 Aqueous dispersions |
| 04/08/1998 | EP0834472A2 Nestable containers and improved water treatment materials |
| 04/08/1998 | EP0834037A1 Low capacity chlorine gas feed system |
| 04/08/1998 | EP0833689A1 Process and apparatus for the magnetic treatment of substances |
| 04/08/1998 | EP0833687A1 Method and device for treating water according to the principle of reversed osmosis |
| 04/08/1998 | EP0833684A1 Method for removing organic constituents from an aqueous stream |
| 04/08/1998 | EP0715635B1 Water-soluble copolymerizates containing carboxyl groups, methods of producing said copolymerizates, and use thereof as scale inhibitors |
| 04/08/1998 | EP0675761B1 Method and installation for treating an aqueous solution by ion exchange |
| 04/08/1998 | EP0633812B1 Catalytic carbon, process for manufacture thereof and use thereof to decompose peroxides |
| 04/08/1998 | EP0513239B1 N,n'-dihaloimidazolidin-4-ones |
| 04/08/1998 | CN2277989Y Domestic water purifying, magnetizing and mineralizing device |
| 04/08/1998 | CN2277988Y Device for cleaning and purifying running-water |
| 04/08/1998 | CN2277987Y Electrochemical reactor for black liquor in paper making |
| 04/08/1998 | CN2277986Y Regenerated redox resin deoxidation device using sodium sulfite reduction |
| 04/08/1998 | CN2277985Y Ion exchanging pure water treating device |
| 04/08/1998 | CN1178513A Process for high concentrated waste water treatment using membrane separation |
| 04/08/1998 | CN1178512A Method for utilising tyres to clean and/or fertilise water |
| 04/08/1998 | CN1178198A Process and apparatus for producing superpurified water |
| 04/08/1998 | CN1178197A Alkali mineral drinking water and preparation thereof |
| 04/07/1998 | US5736118 Spraying inorganic oxide sol upwardly into reaction zone containing reactant gas to form gel, catching presolidified droplets in trap |
| 04/07/1998 | US5736097 Method of preventing pitting corrosion |
| 04/07/1998 | US5736058 Method for inhibiting microbial adhesion on surfaces |
| 04/07/1998 | US5736057 Treating with peracetic acid, performic acid or perpropionic acid yields drinking water which is free of carcinogens and mutagens |
| 04/07/1998 | US5736056 Method for enhancing biocidal activity |
| 04/07/1998 | US5736055 For purification of aquarium water |
| 04/07/1998 | US5736034 Contacting water with vortex air-water bubble pattern |
| 04/07/1998 | US5736027 Method for producing electrolytic water |
| 04/07/1998 | US5736024 Attracting metal ions to negatively charged surface |
| 04/07/1998 | US5736023 Polarity reversal and double reversal electrodeionization apparatus and method |
| 04/07/1998 | US5736016 Electrolytic cell for producing a mixed oxidant gas |
| 04/07/1998 | US5735076 Method for producing high quality crop |
| 04/02/1998 | WO1998013308A1 Process for the treatment and decontamination of acid waters which contain dissolved metals and their conversion into fertilizers (pidra process) |
| 04/02/1998 | WO1998013305A1 Compositions and methods for reducing deposit formation on surfaces |
| 04/02/1998 | WO1998013304A1 Electrochemical processing of liquid such as water |
| 04/02/1998 | WO1998013303A1 Method and apparatus for producing a sterilising solution |
| 04/02/1998 | WO1998013302A1 Modular multi-stage water filter apparatus |
| 04/02/1998 | WO1998013078A1 Method of regenerating dialyzer and regenerative apparatus |
| 04/02/1998 | WO1998013074A1 Dosing mechanism to feed germicide or disinfectant into a water supplied supply device and the use thereof |
| 04/02/1998 | WO1997046305A3 Improved water treatment system |
| 04/02/1998 | DE19625985A1 Processing recirculated water from separation stage in treatment plant |
| 04/02/1998 | CA2266895A1 Modular multi-stage water filter apparatus |
| 04/01/1998 | EP0833196A1 Method for recovering iron in a photographic effluent |
| 04/01/1998 | EP0832855A2 Process for sewage sludge digestion |
| 04/01/1998 | EP0832853A2 Process for the treatment of sludges from biological waste water treatment |
| 04/01/1998 | EP0832852A2 Process for degrading noxious substances |
| 04/01/1998 | EP0832850A1 Method and apparatus for producing a sterilising solution |
| 04/01/1998 | EP0832849A1 Method for eliminating heavy metals from a photographic effluent |
| 04/01/1998 | EP0832561A2 A material, method and apparatus for inhibiting microbial growth in an aqueous medium |
| 04/01/1998 | EP0832042A2 A method of removing iron compounds and chromium compounds from an aqueous electrolytic solution as well as the use of this method in electrochemical machining |
| 04/01/1998 | EP0831729A1 Improved process for reducing levels of microorganisms in pumpable food products using a high pulsed voltage system |
| 04/01/1998 | EP0773816B1 The disposal of organic materials encased in metal |
| 04/01/1998 | EP0729439B1 Method for purifying process water from pulp manufacture |
| 04/01/1998 | CN2277403Y Siphone chlorine dioxide sterilizer |
| 04/01/1998 | CN2277402Y Three-grade high-quality water purifier |
| 04/01/1998 | CN1177576A Method for treatment of waste-alkali-liquid from oxidation and saponification of hexamethylene |
| 04/01/1998 | CN1177575A Water purifying and disinfecting apparatus |
| 04/01/1998 | CN1177574A Regeneration type waste-water treatment tower |