| Patents for C02F 1 - Treatment of water, waste water, or sewage (145,124) |
|---|
| 12/27/1991 | EP0462233A1 Method and apparatus for avoiding scaling in water conduits and in any water piping system |
| 12/27/1991 | EP0462225A1 Apparatus and method for stabilizing sludge |
| 12/27/1991 | EP0462103A1 An improved magnetic-field amplifier |
| 12/27/1991 | EP0449997A4 Oil absorption method and apparatus |
| 12/26/1991 | WO1991019850A1 Textile treatment |
| 12/26/1991 | WO1991019679A1 Coagulants based on double-layer hydroxide compounds |
| 12/26/1991 | WO1991019678A1 Process for treating hydrous sludges containing heavy metal salts and primary flocculating agents |
| 12/26/1991 | WO1991019677A1 Method of treating lake water with aluminum hydroxide sulfate |
| 12/26/1991 | WO1991019675A1 Method and device for purifying water |
| 12/26/1991 | WO1991019555A1 Water purification system with filter cleaning mechanism |
| 12/26/1991 | WO1991019553A1 Method for degassing a coupling liquid for a pressure wave generator using a coupling liquid by chemical process |
| 12/26/1991 | WO1991019552A1 Water heating and distilling apparatus |
| 12/25/1991 | CN2091296U Four-box type still water separator |
| 12/25/1991 | CN1057245A Purifier for cyanogen removal and purification process for cyanide removal from waste liquid |
| 12/25/1991 | CN1015166B Extraction method for treating acid wash waste liquid of rolled steel |
| 12/25/1991 | CN1015152B Water purification device with intake-funnel |
| 12/25/1991 | CN1015151B Filter cover for purification insert in water treatment device hollow tube |
| 12/24/1991 | US5075444 Disodium salt of trimercapto-s-triazine hexahydrate, and method of its preparation |
| 12/24/1991 | US5075017 Supercritical water oxidation under pressure yields ash, carbon dioxide |
| 12/24/1991 | US5075016 Purifying by bubbling an ozone-containing gas; swimming pool |
| 12/24/1991 | US5075015 Wastewater treatment by chlorination |
| 12/24/1991 | US5075010 Flowing aerated water containing ferrous ions over matrix particles gives membrane for rapid oxidation, demetallization |
| 12/24/1991 | US5075008 Process for high-load treatment of carbohydrate containing waste water |
| 12/24/1991 | US5075007 Biological wastewater purification with a downstream precipitation stage |
| 12/24/1991 | US5075002 Fluid pick-up assembly |
| 12/24/1991 | US5074998 Apparatus for treating liquid to prevent and/or remove scale deposits |
| 12/24/1991 | US5074988 Conductive polymer electrode |
| 12/24/1991 | CA2045307A1 Apparatus for the purification of waste water |
| 12/24/1991 | CA1293519C Process for extracting nitrohydroxyaromatics from aqueous solutions |
| 12/24/1991 | CA1293404C Printing plate processor having recirculating water wash reclamation |
| 12/20/1991 | CA2019461A1 Method and device for purifying water |
| 12/19/1991 | DE4019052A1 Removal of concn. of heavy metal ions from aq. soln. - by contacting with opt. neutralised copolymer of ethylene, (meth)acrylic acid and (meth)acrylate ester |
| 12/19/1991 | DE4019050A1 Removal of concn. of heavy metal ions from aq. soln. |
| 12/18/1991 | EP0461959A1 Electric iron with improved water softening cartridge and water reservoir |
| 12/18/1991 | EP0461785A1 Method for treatment of wastewater containing polyether polyols |
| 12/18/1991 | EP0461634A2 Method of manufacture of a gas discharge light source and gas discharge tube |
| 12/18/1991 | EP0461517A1 Process for removing or enriching heavy metals from an aqueous solution |
| 12/18/1991 | EP0461515A1 Device for treating and degasifying of water |
| 12/18/1991 | EP0461385A1 Process for the treatment of wastewaters from gasification plants operating under high pressures |
| 12/18/1991 | EP0397662B1 Process for treating colloidal solutions of lacquer sludges |
| 12/18/1991 | CN2090824U Multifunctional magnetizer |
| 12/18/1991 | CN2090823U Controllable household water clarifier by mineralizing and magnetizing |
| 12/18/1991 | CN2090822U Water processor special for vehicle and ship |
| 12/18/1991 | CN1057041A Deep treatment of waste water from printing and dyeing mill and related apparatus |
| 12/18/1991 | CA2019161A1 Lime metering device |
| 12/17/1991 | US5073575 Cadmium ion-chelating synthetic polymers and process thereof |
| 12/17/1991 | US5073382 Divalent silver alkaline bactericide compositions |
| 12/17/1991 | US5073273 Oxidizing alkaline aqueous slurry with ozone to produce nitrog en and an alkali metal nitrate |
| 12/17/1991 | US5073272 Method for using a flocculant powder |
| 12/17/1991 | US5073271 Mixing scrubber waste liquids with sludge, flocculation, filtr ation, combustion of filter cake |
| 12/17/1991 | US5073270 Use of reducing agents to control scale deposition from high temperature brine |
| 12/17/1991 | US5073268 Oxidation, hydrogen gas, uv rad, ion exchange resins |
| 12/17/1991 | US5073255 Water treatment apparatus |
| 12/17/1991 | US5072600 Wash column ice-pack bottom detection device |
| 12/12/1991 | WO1991018839A1 Method for recycling waster water using excess pressure and oxygenation |
| 12/12/1991 | WO1991018838A1 Composition and method for purifying water |
| 12/12/1991 | WO1991018837A1 Electrolytic cell for waste water treatment |
| 12/12/1991 | WO1991018833A1 Large-pored molecular sieves containing at least one octahedral site and tetrahedral sites of at least one type |
| 12/12/1991 | WO1991018657A1 Water purification straw |
| 12/12/1991 | WO1991018510A1 Algicidally enhanced compositions |
| 12/12/1991 | DE4018628A1 Koagulationsmittel auf der basis von doppelschichthydroxid-verbindungen Coagulating agent on the basis of double layer hydroxide compounds |
| 12/12/1991 | DE4018526A1 Device for magnetic treatment of water - by flowing water in circular path between 2 disc-shaped permanent magnets fitted in supply pipe to e.g. sprinkler or shower unit |
| 12/12/1991 | DE4018287A1 Flocculating agent for purificn. of waste water - comprises acid soln. of salts of polyvalent metals and cationic polymeric carbohydrate |
| 12/11/1991 | EP0461073A1 Device for wet oxidation |
| 12/11/1991 | EP0460795A1 Liquid purifying device incorporating air pumping means within container lid body |
| 12/11/1991 | EP0460261A1 Wastewater disinfection with a combination of biocides |
| 12/11/1991 | EP0460248A1 Process and apparatus for treating water with a electro-magnetic field |
| 12/11/1991 | EP0460214A1 Flocculating apparatus |
| 12/11/1991 | EP0460122A1 Process for non-polluting spray painting with a dispersion of oven-drying paint in water. |
| 12/11/1991 | EP0432250A4 Process for reducing the cyanide content of a solution |
| 12/11/1991 | CN2090376U Strong magnetic cup |
| 12/11/1991 | CN2090375U 净水器 Water Purifier |
| 12/11/1991 | CN1056893A Process for treating sewage from coal-gas by extracting to remove phenol and evaporating ammonia |
| 12/11/1991 | CN1056856A Recovery and use method of pigment from wasted dyeing water |
| 12/11/1991 | CN1056855A Device for quantitatively adding of germicide to exit of pump |
| 12/10/1991 | US5072124 Disinfector system for disinfecting water by electron beam |
| 12/10/1991 | US5071622 Process for odor control |
| 12/10/1991 | US5071587 Composition and method for purifying water |
| 12/10/1991 | US5071574 Deoxygenating with hydrogen sulfide in presence of metal salt and oxyalkylated fatty amine |
| 12/10/1991 | US5071569 Algae removal; administering ethylenediamine tetracetic acid compound and ionizable ammonium compound; filtering; swimming pools |
| 12/10/1991 | US5071568 Selenium removal process |
| 12/10/1991 | US5071566 Process for the separation of solid phase from liquid substance, particularly for waste water purification |
| 12/10/1991 | US5071564 Fine-mesh textile bag of agglomerated powdered polymer of bicyclo 2.2.1!-2-heptene; oil spills |
| 12/10/1991 | US5071563 Adsorption onto slurry of zirconium hydrous oxide powder |
| 12/10/1991 | US5071551 Water purifier |
| 12/10/1991 | US5071548 Fluid purifying apparatus and method of purifying fluids |
| 12/10/1991 | US5071532 Water treatment |
| 12/10/1991 | CA1293067C System for water treatment with ozone |
| 12/07/1991 | CA2042162A1 Cationic polymer for water clarification and sludge dewatering |
| 12/05/1991 | WO1991018836A1 Improved water clarifying apparatus |
| 12/05/1991 | DE4116926A1 Denitrification delivery channel in activated sludge treatment plant - empties waste-water into one of several aeration basins, using quick-opening penstock |
| 12/05/1991 | DE4016543A1 New modified polyacrylonitrile with amidoxime and hydroxamic acid gps. |
| 12/05/1991 | CA2084647A1 Water clarifying apparatus |
| 12/05/1991 | CA2043428A1 Ultrafiltration device and process |
| 12/04/1991 | EP0459928A1 Plant for treating a liquid flux in one phase contactor and recirculation de-gassing device |
| 12/04/1991 | EP0459868A1 Process for removing dissolved metals from water |
| 12/04/1991 | EP0459657A1 Electrodes |
| 12/04/1991 | EP0459642A1 Electrochemical ion exchange |
| 12/04/1991 | EP0459444A1 Method and system for in situ decontamination of ground water mixed with hydrocarbons |
| 12/04/1991 | EP0459184A2 Obtaining ammonia water |