| Patents for C02F 1 - Treatment of water, waste water, or sewage (145,124) |
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| 06/25/1991 | US5026723 Water treatment, papermaking |
| 06/25/1991 | US5026491 Controlling sulfate reducing bacteria by slug dosing with quick-kill antimicrobials and by continuous dosing with isothiazolones |
| 06/25/1991 | US5026488 Pumping fluid impurities through filter loop, heating, separating, cooling and analyzing processed fluids; injection of additives; mobile and self-powered in a vehicle |
| 06/25/1991 | US5026485 Remove styrene-acrylonitrile copolymer and polyvinyl alcohol with sodium metaborate and ferrous sulfate; flocculation |
| 06/25/1991 | US5026484 Continuous flow method for processing liquids using high-energy discharge |
| 06/25/1991 | US5026477 Water purifying combination and ultraviolet lamp therefor |
| 06/25/1991 | US5026465 Electrodeionization polarity reversal apparatus and process |
| 06/25/1991 | US5025822 Water disinfecting system |
| 06/25/1991 | CA1285220C Biocidal compositions and use thereof |
| 06/23/1991 | WO1991009666A1 Process for non-polluting spray painting with a dispersion of oven-drying paint in water |
| 06/21/1991 | WO1991009154A1 Deoxidizer for boiler and method of removing dissolved oxygen from boiler water |
| 06/20/1991 | DE3941897A1 Ultraviolet generating appts. - having medium or high pressure ultraviolet lamp, for ozone and sterilising radiation prodn. |
| 06/20/1991 | DE3941813A1 Electrochemical break-down of toxic chlorinated organic cpds. - in waste water using in situ activated electrode surfaces |
| 06/20/1991 | DE3941431A1 Procedure and plant for disposal of refuse dump gas and seepage water - gas is burnt and seepage water cleaned by reverse osmosis |
| 06/20/1991 | CA2032574A1 Method and apparatus for magnetic inhibition of protista |
| 06/20/1991 | CA2031122A1 Vinyl phenol polymers for demulsification of oil-in-water emulsions |
| 06/19/1991 | EP0433200A1 Water filtration and purification process |
| 06/19/1991 | EP0433035A1 Magnetic water softener |
| 06/19/1991 | EP0432989A2 Calixarene and oxacalixarene derivatives and use thereof for sequestration of metals |
| 06/19/1991 | EP0432906A1 Filter |
| 06/19/1991 | EP0432787A1 Process for removing water soluble organic compounds from produced water |
| 06/19/1991 | EP0432651A1 Process for the purification of contaminated soils from biodegradable harmful substances |
| 06/19/1991 | EP0432336A1 Device for injecting additive products into a liquid |
| 06/19/1991 | EP0432276A1 Method of concentrating and dehydrating slurried sludge |
| 06/19/1991 | EP0432265A1 Ultra-pure water supply piping arrangement apparatus |
| 06/19/1991 | EP0432250A1 Process for reducing the cyanide content of a solution. |
| 06/19/1991 | CN2079185U Water treatment apparatus |
| 06/19/1991 | CN1052313A Preparation of trioodated resin (sterilizer) and its effect |
| 06/19/1991 | CN1052295A Basic ferric sulfate mixing and coagulant agent for water treatment |
| 06/19/1991 | CN1052294A Producing technology for commercial active silicic acid coagulant aid |
| 06/19/1991 | CN1012893B Extraction method for the enriched effective components of mai-fan-shi |
| 06/18/1991 | US5024770 Using contaminated groud water; bviodegradable material for agricultural products and clean refuse derived fuel |
| 06/18/1991 | US5024769 Method of treating an arsenic-containing solution |
| 06/18/1991 | US5024768 Adding controlled blends of cationic and anionic polymers to water used to wash air in paint spray booths |
| 06/18/1991 | US5024766 Point of use deionized water purification unit |
| 06/18/1991 | US5024764 Filling a hollow cylindrical block with an aqueous slurry of deionizing resin beads and drying beads to fracture |
| 06/18/1991 | US5024759 Magnetic treatment of fluids |
| 06/18/1991 | US5024271 Permanent-magnet wax-proof device |
| 06/18/1991 | CA1284933C Testing polyelectrolytes |
| 06/13/1991 | WO1991008175A1 Sewage purification method using flotation and apparatus for the implementation of the method |
| 06/13/1991 | WO1991008174A1 Processing plant for i.a. sanitary slaughtering |
| 06/13/1991 | WO1991008036A1 Device for filtering contaminated liquids, in particular water |
| 06/13/1991 | DE3940464A1 Removing silica from untreated sea or brackish water - by treating with base to ppte. calcium carbonate and silicate but not magnesium hydroxide |
| 06/12/1991 | EP0432018A1 Process for treatment of water by simultaneous flocculation and adsorption by means of partially hydrophobic polyelectrolytes |
| 06/12/1991 | EP0431932A1 Method for treatment of waste water |
| 06/12/1991 | EP0431739A1 Microbicidal compositions of dimethylamine-epichlorohydrin amine polymers |
| 06/12/1991 | EP0431644A2 Chlorinator apparatus |
| 06/12/1991 | EP0431593A2 Separation method and separating agent |
| 06/12/1991 | EP0431387A1 Basic polysaccharides |
| 06/12/1991 | EP0431384A1 Apparatus for the expulsion of volatile pollutants from ground water |
| 06/12/1991 | EP0431190A1 Fluid treater and method of stopping the same |
| 06/12/1991 | EP0431030A1 A distillation apparatus. |
| 06/12/1991 | EP0195819B1 Method for ion-exchange or adsorption |
| 06/12/1991 | CN2078581U Vacuum bottle capable of magnetizing water |
| 06/12/1991 | CN1052102A Process for direct extraction of chrome yellow from treatment of cr 6+ waste liquid |
| 06/12/1991 | CN1052101A Method and apparatus for thorough treatment of waste electroplating liquid |
| 06/12/1991 | CN1052100A Process for disposal of mg-bearing water |
| 06/12/1991 | CN1052099A Apparatus for treating waste electroplating liquid by electrolysis of injecting iron ions |
| 06/12/1991 | CA2018417A1 Silicate coagulant aid for treatment of oily wastewaters |
| 06/11/1991 | US5023332 1-methyl-3,5,7-triaza-1-azoniatricyclodecane triiodide |
| 06/11/1991 | US5023267 Microbiological control agent |
| 06/11/1991 | US5023012 Aluminum sulfate coagulant, microbiocide, hydrophilic colloid-sodium bicarborate, bentonite, sodium dichloroisocyanurate, carboxymethyl cellulose, silica, polyacrylamide and halazone |
| 06/11/1991 | US5022999 Method of treating starch-containing water |
| 06/11/1991 | US5022997 Method for treating aqueous solutions |
| 06/11/1991 | US5022994 Disk for controlling the sequence of water softener regeneration cycle of an ion exchange resin tank |
| 06/11/1991 | US5022974 Method and apparatus for electrolytic treatment of liquids, especially waste water |
| 06/11/1991 | CA1284844C Brine treatment using ethylene/carboxylic acid polymers |
| 06/11/1991 | CA1284843C Method for preventing the bulking of activated sludge |
| 06/08/1991 | CA2031599A1 Separation method and separating agent |
| 06/08/1991 | CA2031356A1 Water ozonation process using heterogeneous catalysis |
| 06/08/1991 | CA2030632A1 Chlorinator apparatus |
| 06/07/1991 | CA2031618A1 Process for the treatment of waters with simultaneous floculation and adsorption by partly hydrophobic polyelectrolytes |
| 06/07/1991 | CA2031600A1 Removal of organic cations from polar fluids |
| 06/06/1991 | WO1991008038A1 Method and apparatus for effecting gas-liquid contact |
| 06/06/1991 | DE3939984A1 Prepn. device for auxiliary flocculant additives - where the additive is mixed as it passes through three chambers provided with agitators mounted on a single shaft |
| 06/06/1991 | DE3939732A1 Removing nitrogen cpds. from water - by nitrification and withdrawing carbon di:oxide before denitrification in amt. corresp. to carbon di:oxide formed |
| 06/06/1991 | DE3939502A1 Vorrichtung zur filtration von verunreinigten fluessigkeiten, insbesondere von wasser Apparatus for the filtration of contaminated liquids, in particular water |
| 06/05/1991 | EP0430904A1 Process for treating waste water with high concentration ozone water |
| 06/05/1991 | EP0430581A2 Fluid irradiation |
| 06/05/1991 | EP0430323A1 Silver recovery device |
| 06/05/1991 | EP0430270A1 Method for the biological inactivation of nucleic acids |
| 06/05/1991 | EP0429988A1 Use of particular magnetic vector potentials for treating materials |
| 06/05/1991 | EP0429750A1 Process for catalytic oxidation of organic impurities in waste waters |
| 06/05/1991 | EP0429700A1 Apparatus for the continuous purification of liquids, and in particular of water, by means of the technique of high-gradient magnetic filtration |
| 06/05/1991 | EP0429631A1 Biocidal methods for recirculating water systems. |
| 06/05/1991 | EP0429593A1 Device for separating light liquids. |
| 06/05/1991 | CN2078406U Electronic water-saving magnetic controller |
| 06/05/1991 | CN2078326U Sodium hypochlorite generating device |
| 06/05/1991 | CN2078319U Ion-exchange device for small fluidized bed |
| 06/05/1991 | CN2078318U Inner core-tube for purifying, mineralizing and magnetizing drinking water of household |
| 06/05/1991 | CN2078168U Medical hanging needle lorentz device |
| 06/05/1991 | CN1012729B Method for purification of waste water containing arsenic |
| 06/04/1991 | US5021391 Carbonaceous adsorbent for removal of pyrogen and method of producing pure water using same |
| 06/04/1991 | US5021167 Oil in water emulsion |
| 06/04/1991 | US5021164 Oxidized activated carbon and its use in removal of aromatic compounds from aqueous solutions |
| 06/04/1991 | US5021163 Catalytic destruction of sulfur-oxygen anions |
| 06/04/1991 | US5020335 Air conditioning |
| 06/03/1991 | CA2031329A1 Basic polysaccharides |
| 05/30/1991 | WO1991007698A1 Low effluent replenishment system for colour negative developers |
| 05/30/1991 | WO1991007614A1 Water tap |