Patents for C02F 1 - Treatment of water, waste water, or sewage (145,124) |
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06/30/1987 | US4676909 Process for recovering noble metals from their cyanide complexes |
06/30/1987 | US4676908 Waste water treatment |
06/30/1987 | US4676907 Biological filtration process |
06/30/1987 | US4676906 Hybrid high rate anaerobic treatment process |
06/30/1987 | US4676896 Faucet mounted purifier |
06/30/1987 | US4676882 Improving water quality; continuous process; ion-exchanging membrane between cylindical electrodes |
06/30/1987 | US4676878 Apparatus and method for electronic decomposition of water into aqueous free radicals and free electrons |
06/25/1987 | DE3545988A1 Detackifying agent for waste water from paint-spraying cabins |
06/25/1987 | DE3545190A1 Process for producing utilisable products downstream of a flue-gas desulphurisation |
06/24/1987 | EP0226344A2 Insoluble composition for removing silver from a liquid medium |
06/24/1987 | EP0226295A2 Method for prevention of metallic precipitate reoxidation/redissolution in aqueous systems |
06/24/1987 | EP0226284A1 Water recirculating apparatus and method |
06/24/1987 | EP0226216A2 Distilling apparatus |
06/24/1987 | EP0225965A2 Method of treating waste water and equipment therefor |
06/24/1987 | CN85109661A Mini-device for producing mineral water |
06/23/1987 | US4675116 Dewatering solids suspensions with controlled flocculant addition |
06/23/1987 | US4675115 Method and device for removing hydrogen sulfide from well water with in situ adsorbent regeneration |
06/23/1987 | US4675114 Process for dewatering municipal and other sewage sludges |
06/23/1987 | US4675112 Flocculation and using ignaceous rock as a decantation promot er and substrate for bacteria growth |
06/23/1987 | US4675111 Solution waste treatment module |
06/23/1987 | US4675090 Electrodialysis using a membrane comprising an animated graft polymer support |
06/23/1987 | CA1223375A1 Treating cyanide-containing effluents |
06/23/1987 | CA1223275A1 Quaternary ammonium disinfectants |
06/23/1987 | CA1223172A1 Encapsulated solid microbiocidal article |
06/23/1987 | CA1223171A1 Protracted release microbiocidal article for aqueous systems |
06/23/1987 | CA1223170A1 Microbiocidal article for aqueous systems |
06/19/1987 | DE3544303A1 Device for collecting and scooping off foam formed by flotation |
06/19/1987 | DE3543661A1 Process for water treatment upstream of a reverse osmosis plant |
06/18/1987 | WO1987003516A1 Rapid dissolving polymer compositions and uses therefor |
06/18/1987 | WO1987003503A1 Treatment of emulsions |
06/17/1987 | CN86203520U Waste water treatment equipment for textile dyeing by high-voltage electrolytic coacevation |
06/16/1987 | US4673704 Equilibratine agents |
06/16/1987 | US4673527 Water treating agents entrapped in soluable polymer matrix |
06/16/1987 | US4673513 Adjustment of chlorine level, stabilizing chlorine level with cyanuric acid or ammelide |
06/16/1987 | US4673511 Acrylamide diallyl dimethyl ammonium chloride copolymers as improved dewatering acids for mineral processing |
06/16/1987 | US4673510 Process for the disposal of settled sludge derived from a biological sewage-disposal plant |
06/16/1987 | US4673509 Adding phosphonium compound |
06/16/1987 | US4673507 Fluid treatment process and apparatus |
06/16/1987 | US4673505 Inorganic azides extend activity of waste treatment bacteria |
06/16/1987 | US4673494 Water treatment apparatus |
06/16/1987 | EP0225793A2 Use of ion exchange resin mixtures in cation exchange processes |
06/16/1987 | EP0225526A2 Device for treating a liquid with gas or for mixing liquids |
06/16/1987 | CA1222943A1 Process and apparatus for purification of contaminated groundwater |
06/11/1987 | DE3643444A1 Water purification flocculation tank for restricted installation spaces |
06/11/1987 | DE3628786A1 Process for the continuous multiple-stage final purification of coal-containing waste waters |
06/11/1987 | DE3543223A1 Method for destroying microbes |
06/10/1987 | EP0224812A2 Process for working up mother liquors resulting from the preparation of benzothiazole derivatives |
06/10/1987 | EP0224801A2 Sewage oxygenating device |
06/10/1987 | EP0224762A2 Reaction cell |
06/10/1987 | EP0224743A2 Process for removing cations from aqueous solutions by the addition of crandallite |
06/10/1987 | EP0224648A2 Sewage oxygenating device |
06/10/1987 | CN86105710A Method of treating waste water and equipment therefor |
06/09/1987 | US4671882 Phosphoric acid/lime hazardous waste detoxification treatment process |
06/09/1987 | US4671881 Producing fuel materials |
06/09/1987 | US4671879 Process for reducing the nitrate content in water |
06/09/1987 | US4671874 Electrokinetics; sludges, landfill operations |
06/09/1987 | US4671869 Filter device |
06/09/1987 | US4671863 Reversible electrolytic system for softening and dealkalizing water |
06/09/1987 | US4671351 Fluid treatment apparatus and heat exchanger |
06/09/1987 | US4671077 Ice-maker heat pump using water supercooling |
06/09/1987 | CA1222718A1 Desalinization device |
06/09/1987 | CA1222714A1 Method for removing insoluble sulfide pads at oil/water interfaces |
06/04/1987 | WO1987003276A1 Apparatus for rediffusion of oxygen |
06/04/1987 | WO1987003275A1 Electronic control and dosing system for desalinators |
06/04/1987 | WO1987003261A1 Marine biofouling reduction |
06/04/1987 | DE3542160A1 Apparatus for separating off amalgam particles |
06/04/1987 | DE3542134A1 Apparatus for separating off fine solid particles from waste water |
06/04/1987 | DE3542114A1 Centrifuge for separating off fine solid particles from waste water |
06/03/1987 | EP0224357A2 Acid recovery from an aqueous acid/salt solution |
06/03/1987 | EP0224233A2 Apparatus for the separation of small solids particles |
06/03/1987 | EP0224232A2 Solid bowl centrifuge for the separation of small solids particles |
06/03/1987 | EP0224160A2 Process for the removal of hydrocarbons from waste waters or ground water |
06/03/1987 | EP0223860A1 Germicidal and purifying agent for drinking water |
06/03/1987 | CN85108552A Treatment of chlorhydric acid pickling waste containing iron |
06/02/1987 | USH283 Chemical technique for sequestering ammonia off-gassing from solidified waste |
06/02/1987 | US4670360 Fuel cell |
06/02/1987 | US4670180 Metal scavenger and metal scavenging process |
06/02/1987 | US4670160 Metal scavenger and metal scavenging process |
06/02/1987 | US4670159 Process for obtaining purified water from wet sludges and slurries of solid materials |
06/02/1987 | US4670158 Precipitation coagulation of latex by controlled additions of lime and phosphoric acid |
06/02/1987 | US4670157 Enhanced oil recovery; injection wells |
06/02/1987 | US4670150 Mixing with softener and precipitated hardness impurities then removal a segment and filtration |
06/02/1987 | US4670029 Dearating water used to flood bore |
05/27/1987 | EP0223569A2 Filtering system |
05/27/1987 | EP0223563A2 Swimming pool water treatment |
05/27/1987 | EP0223476A1 Heat exchange method and apparatus |
05/27/1987 | EP0223411A2 Ozone purification system and apparatus |
05/27/1987 | EP0222895A1 Method and apparatus for conducting chemical reactions at supercritical conditions |
05/27/1987 | EP0146597B1 Plant for the ozonation of a fluid |
05/27/1987 | DE3635585A1 Electrochemical solar cell for water hydrolysis and desalination using a photoactive electrode made of organic materials |
05/26/1987 | US4668747 Preparation of water soluble cationic acrylamide polymer and product using weak acid to adjust pH |
05/26/1987 | US4668404 Process for reducing color contamination of influent water |
05/26/1987 | US4668403 Polyquaternary ammonium compounds |
05/26/1987 | US4668402 System for treating fluids |
05/26/1987 | US4668389 Cleaning device arranged in front of the inlet to a waterway |
05/26/1987 | US4668369 Reciprocating electrode cleaner for electric field liquid treater |
05/26/1987 | US4668250 Process for continuously removing and recovering respectively a gas dissolved in a liquid, particularly ammonia from aqueous ammonia waste water |
05/26/1987 | US4668124 Disposal of material containing vanadium as landfill |
05/26/1987 | CA1222200A1 Deaeration of water |
05/21/1987 | WO1987003111A1 Water treatment apparatus |