| Patents for C02F 1 - Treatment of water, waste water, or sewage (145,124) |
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| 07/23/1991 | US5034110 Pool chlorinators |
| 07/23/1991 | CA1286477C Turbine agglomerated calcium hypochlorite particle |
| 07/18/1991 | DE4000999A1 Facilitating unstable reaction at high temp.-pressure - by removing side stream for extra heating before return to main stream |
| 07/17/1991 | EP0436922A2 Method and apparatus for treating effluent |
| 07/17/1991 | EP0436832A1 Process and apparatus for purifying and neutralising exhaust gas condensates |
| 07/17/1991 | EP0436589A1 Method of freezing and separation |
| 07/17/1991 | CN2080938U Scale cleaning instrument |
| 07/17/1991 | CN1053046A Separation method and separating agent |
| 07/17/1991 | CA2034228A1 System for driving volatile contaminants from ground water |
| 07/16/1991 | US5032292 Method for preventing biofilm in spas |
| 07/16/1991 | US5032291 Catalytic reduction of nitro- and nitroso- substituted compounds |
| 07/16/1991 | US5032290 Circulation |
| 07/16/1991 | US5032287 Septic tank effluent processing vaporizer |
| 07/16/1991 | US5032286 Flocculation |
| 07/16/1991 | US5032285 Enhanced oil recovery |
| 07/16/1991 | US5032284 Process for treating ammonia and nitrite containing waters to prevent nitric oxide emissions therefrom |
| 07/16/1991 | US5032280 Liquid membrane catalytic scale dissolution method |
| 07/16/1991 | US5032268 Self-contained canister unit for filtering tap water |
| 07/16/1991 | US5032265 Method and system for producing sterile aqueous solutions |
| 07/16/1991 | US5032241 Fluid purification |
| 07/16/1991 | US5032230 Vacuum draft submerged combustion separation system |
| 07/16/1991 | US5032157 Purification |
| 07/16/1991 | CA2034077A1 Use of grafted cellulose for purifying water |
| 07/16/1991 | CA1286448C Flocculating agents based upon copolymers of acrylamide and dimethylaminopropylacrylamide for use in dewatering sludge |
| 07/11/1991 | WO1991010164A1 Method for de-aerating from an aqueous composition and device for implementing the method |
| 07/11/1991 | WO1991009673A1 Uv lamp enclosure sleeve |
| 07/11/1991 | WO1991009659A1 Water distillation apparatus |
| 07/11/1991 | DE4033016A1 Electrolytic cell for continuous catalytic treatment of water - comprises housing with anodes catalysers, cathode in cassette form sepd. by spacers and having a final filter and absorption stage |
| 07/11/1991 | DE4000509A1 Treatment of waste liq. rich in ammonia - by neutralisation with strong acid and concentrating under reduced pressure to produce colourless, almost odourless slurry |
| 07/11/1991 | DE4000329A1 Solidification of farmyard slurry - with addn. of acids produced from sewage sludge to react with nitrogen cpds. |
| 07/11/1991 | DE4000142A1 Continuous purificn. of waste water, esp. drainage water - by passage over coke or active carbon based on lignite |
| 07/10/1991 | EP0436409A1 Method for ozonizing water by means of heterogeneous catalyst activation |
| 07/10/1991 | EP0436254A1 Treatment of aqueous waste streams |
| 07/10/1991 | EP0436124A2 Filter body and process for its manufacture |
| 07/10/1991 | EP0436098A2 Process for degassing purified water obtained by reverse osmosis and reverse osmosis system for carrying out said method |
| 07/10/1991 | EP0436090A1 Process for the purification of waste water from car washing plants |
| 07/10/1991 | EP0436082A2 Separation of formaldehyde and/or dispersed colloids from production waste water, as well as usage of the generated precipitate |
| 07/10/1991 | EP0435944A1 Water purifying system |
| 07/10/1991 | EP0435892A1 A process for disposing of used oil/water emulsions |
| 07/10/1991 | CN2080514U Aerated apparatus of oxidation trench for sewage disposal |
| 07/10/1991 | CN2080511U Combined water magnetizer |
| 07/10/1991 | CN2080510U Multiple magnetizing water-purifier |
| 07/10/1991 | CN1052869A Water-in-oil emulsion of cationic polymer |
| 07/10/1991 | CN1052831A Enclosed purification process by water-washing in production of sulphuric acid |
| 07/10/1991 | CN1052799A Technological method of strong sorbent |
| 07/10/1991 | CN1013104B Clarification device |
| 07/10/1991 | CA2025785A1 Organic sludge dehydrater |
| 07/09/1991 | US5030591 High molecular weight polymer and solid |
| 07/09/1991 | US5030359 Dewatering sludge |
| 07/09/1991 | US5030358 Catalysis with activated carbon |
| 07/09/1991 | US5030344 Magnetic fluid conditioner |
| 07/09/1991 | US5030342 Installation for collecting oils and fuels spilled at sea |
| 07/09/1991 | US5030327 Quiescent liquid, rising gas bubble stream, boiling, channeling bubble stream, heat exchanging, condensation |
| 07/09/1991 | US5030125 Attachment assembly for ultraviolet light lamp apparatus |
| 07/09/1991 | CA1286039C Process for the improved separation of clarified liquid from biomassin the biological treatment of sewage |
| 07/06/1991 | CA2033607A1 Treatment of aqueous waste streams |
| 07/04/1991 | DE4042210A1 Removing arsenic and other metals from waste water - by treating with hydrogen sulphide and removing pptd. sulphide(s) |
| 07/04/1991 | DE4015804A1 Prepn. of water purifying and opt. disinfecting chemical - contg. trivalent iron by oxidn. of ferrous salt in aq. slurry using solid chlorate or perchlorate |
| 07/04/1991 | DE3943022A1 Waste material contg. coke - used as adsorbent to remove hydrocarbon(s) and heavy metals from waste water |
| 07/03/1991 | EP0435766A2 Structure of expanded graphite and its use in the removal of oil from water |
| 07/03/1991 | EP0435176A1 Neutralizing and anti-acidifying agents and their manufacture |
| 07/03/1991 | EP0435014A1 Removal of organic cations from polar fluids |
| 07/03/1991 | EP0434948A2 Swimming pool chemical dispenser |
| 07/03/1991 | EP0434830A1 Cleaning composition, oil dispersant and use thereof |
| 07/03/1991 | EP0434686A1 Removal of nitric oxide from waste gases and recovery as nitric acid. |
| 07/03/1991 | EP0434671A1 Liquid separator |
| 07/03/1991 | EP0397742A4 Porous article impregnation resin composition, and system for treating impregnation process waste water |
| 07/03/1991 | EP0360794A4 Method of preparing a mixture of chlorine containing substances including chlorine dioxide |
| 07/03/1991 | CN2080063U Treating apparatus of liquidized bed ion exchanging water |
| 07/03/1991 | CN2079913U Multi-function magnetization water cup |
| 07/03/1991 | CN1052646A Efficient water quality cleansing agent |
| 07/03/1991 | CN1052611A Method and apparatus for magnetic inhibition of protista |
| 07/03/1991 | CA2007050A1 "iron water conditioner" |
| 07/02/1991 | US5028340 Process for treating sulfide-containing water to reduce sulfide emissions therefrom |
| 07/02/1991 | US5028336 Raising the pH to form an alkalized aqueous charge liquid containing dissolved electrolytes, filtering, recovering retentate |
| 07/02/1991 | US5028298 Waste water concentrator and waste water disposal plant |
| 07/02/1991 | US5028261 Used in construction materials |
| 07/02/1991 | CA1285667C Chromium recovery system |
| 07/02/1991 | CA1285666C Integral water demineralizer system and method |
| 07/02/1991 | CA1285450C Sulphonate-containing terpolymers as flocculants for suspended solids |
| 06/27/1991 | WO1991009145A2 Method for recovering metals from waste liquors |
| 06/27/1991 | WO1991008986A1 Method of disposal and degradation of toxic organic compounds |
| 06/27/1991 | WO1991008985A2 Catalytic method for degrading aqueous effluent containing toxic hydrocarbon compounds by oxidation |
| 06/27/1991 | WO1991008981A2 Solutions for stabilizing hydrogen peroxide containing solutions |
| 06/27/1991 | WO1991008831A1 Treatment of domestic and industrial waste waters |
| 06/27/1991 | WO1991008814A1 Fluid treatment devices |
| 06/27/1991 | WO1991008813A1 System for and method of decontaminating a contaminated fluid by using photocatalytic particles |
| 06/27/1991 | DE3941989A1 Cleaning acid waste water from glass industry contg. sulphuric acid - by passage through strongly basic anion exchanger and through chelate resin exchanger contg. active oxime Gps. |
| 06/26/1991 | EP0434558A2 Method and apparatus for magnetic inhibition of protista |
| 06/26/1991 | EP0434484A1 Device for softening water by decarbonization |
| 06/26/1991 | EP0434107A1 Method for processing residual fixing-baths |
| 06/26/1991 | EP0433893A2 Process and system for purifying pure water or ultrapure water |
| 06/26/1991 | EP0433880A1 Process for reprocessing aqueous mother liquors containing hydrochloric acid, sulphuric acid and their hydroxylammonium and ammonium salts |
| 06/26/1991 | EP0433860A2 Waterglass precipitate recovery process |
| 06/26/1991 | EP0433580A1 Metal scavengers and wastewater treatment processes |
| 06/26/1991 | EP0433564A1 Improved process for odor control |
| 06/26/1991 | CN2079614U Device for f content reducing treatment of drinking water |
| 06/26/1991 | CN2079507U Liquid sterilising machine |
| 06/26/1991 | CN1052466A Process and apparatus for treating hydrophobic chemical waste water |
| 06/26/1991 | CA2032965A1 Removal of oil from water |