| Patents for C02F 1 - Treatment of water, waste water, or sewage (145,124) |
|---|
| 09/04/1991 | CN1054248A Process for preparing water germicide |
| 09/04/1991 | CN1054235A Multifunctional efficient method for purifying sewage |
| 09/04/1991 | CN1013768B Process for treatment waste solution containing ammonium ions and fluorineions |
| 09/04/1991 | CN1013765B Oil conte, sewage treatment device |
| 09/04/1991 | CA2076759A1 Fully automatic current control system for metal depletion cells |
| 09/03/1991 | US5045288 Gas-solid photocatalytic oxidation of environmental pollutants |
| 09/03/1991 | US5045215 Removing hazardous contaminants from water |
| 09/03/1991 | US5045214 Methods for removing substances from aqueous solutions |
| 09/03/1991 | US5045213 Precipitating metals with calcium dithiocarbamate |
| 09/03/1991 | US5045212 Process for the separation of oil-in-water emulsions |
| 09/03/1991 | US5045210 Synthetic Polymer Modified Polysaccharide, Ion Exchange Resins |
| 09/03/1991 | US5045198 Faucet-mounted microbial filter |
| 09/03/1991 | US5045197 Reverse osmosis purification system with unitary header manifold |
| 09/03/1991 | US5045195 Personal drinking water purification tube |
| 09/03/1991 | US5045187 Regeneration system for water conditioners such as water softeners |
| 09/03/1991 | US5045163 Electrochemical method for measuring chemical species employing ion exchange material |
| 09/03/1991 | CA1288532C Method of removing macromolecular organic dissolved and colloidal material from wood processing industry effluents |
| 09/03/1991 | CA1288531C Method for preventing the bulking of activated sludge |
| 09/03/1991 | CA1288334C Process for preparing a storage-stable concentrate |
| 09/03/1991 | CA1288217C Process for the removal of organic contaminants from soils and sediment |
| 08/29/1991 | WO1991012885A1 Selective adsorbent for ammonuim ion and ammonia and preparation thereof |
| 08/29/1991 | DE4011174C1 Reducing amt. of drainage water from refuse tip - by inserting electrodes of graphite fabric at base and upper levels of tip and supplying current |
| 08/29/1991 | DE4005577A1 Bath drain-water processing unit - has surge-arresting and initial-cleaning vessel upstream of tank |
| 08/29/1991 | DE4005520A1 Evaporator for water purificn. - has vertical plastic, metal alloy, graphite etc. heat exchanger pipes used to provide energy for integrated electro-coagulator |
| 08/29/1991 | CA2053291A1 Ammonium ion-and ammonia-selective adsorbent and process for preparation of same |
| 08/29/1991 | CA2037177A1 Water degasification and distillation apparatus |
| 08/28/1991 | EP0443747A2 Flow collector/distributor for water treatment tank |
| 08/28/1991 | EP0443024A1 Method and apparatus for electrophoretic separations. |
| 08/28/1991 | EP0442951A1 Precipitant or flocculant for treatment of waste water and process involving their use |
| 08/28/1991 | EP0442946A1 Solar aquatic method and apparatus for treating waste. |
| 08/28/1991 | EP0193565B1 Apparatus for clarification of water |
| 08/28/1991 | CN1054053A Physico-chemical treating method for salt bearing waste water of organic phosphorous pesticide |
| 08/28/1991 | CN1054019A Method for fully separated mixed resin |
| 08/27/1991 | US5043104 Apparatus for gas absorption in a liquid |
| 08/27/1991 | US5043080 Contacting with hydrogen peroxide and transition metal ions under acidic conditions and irradiating with ultraviolet light to decompose contaminants |
| 08/27/1991 | US5043079 Passing through liquid ring compressor |
| 08/27/1991 | US5043078 Using water, sulfur acid, and sodium carbonate; sunlight activation |
| 08/27/1991 | US5043076 Mixture of water-swellable clay and zeolite and sodium bentonite ion exchangers |
| 08/27/1991 | US5043075 Method of removing amines |
| 08/27/1991 | US5043072 Method of treating fluoride-containing water |
| 08/27/1991 | US5043066 Fluid purifying apparatus and method of purifying fluids |
| 08/27/1991 | US5043061 Evaporation and emanation type wastewater treating apparatus |
| 08/27/1991 | US5043050 Electrolytic treatment apparatus |
| 08/27/1991 | CA1288057C Cross flow microfilter |
| 08/27/1991 | CA1287967C Ultraviolet water treatment apparatus |
| 08/22/1991 | WO1991012565A1 Method and apparatus for removing silver in the form of silver salts from a liquid |
| 08/22/1991 | WO1991012474A1 Process and installation for converting waste heat into useful energy |
| 08/22/1991 | WO1991012209A1 Method and apparatus for treating water in a cooling system |
| 08/22/1991 | DE4005469A1 Removing sulphate from waste water - by pptn. with aluminium salt and lime, esp. for treating water from gas desulphurisation units |
| 08/22/1991 | DE4005064A1 treating settled anaerobic sludge at base of water bodies - with additives which eliminate or convert toxic pollutants, esp. iron oxide to convert hydrogen sulphide |
| 08/21/1991 | EP0442605A1 Method of performing electrochemical ion exchange |
| 08/21/1991 | EP0442463A1 Apparatus for continuous purification of liquids |
| 08/21/1991 | EP0442454A1 Method and apparatus for removing wastes from sub-soil formations in the ground |
| 08/21/1991 | EP0442254A1 Process and arrangement for the production of ozonic gases and solutions |
| 08/21/1991 | EP0441938A1 Process and installation for extracting fat and/or protein-containing material from fat-containing liquid material, in particular from slaughter deposits and waste. |
| 08/21/1991 | CN2083233U Magnetization water tap |
| 08/21/1991 | CN2083149U Water magnetizer with magnet-rotating device |
| 08/21/1991 | CN2083148U High-frequency device of treatment of water with a cyclone plate |
| 08/21/1991 | CN1053913A Method for clarifying urban sewage with powdered coal ash |
| 08/21/1991 | CA2036543A1 Liquid recycling system |
| 08/20/1991 | US5041463 Biocidal compositions and use thereof containing a synergistic mixture of glutaraldehyde and dodecylguanidine hydrochloride |
| 08/20/1991 | US5041408 Catalyst comprising calcium aluminate cement and at least one oxide of nickel or cobalt |
| 08/20/1991 | US5041219 Dual chamber water filter |
| 08/20/1991 | US5041218 Water purification set and chemicals unit therefor |
| 08/20/1991 | CA1287829C Composite photocatalyst for refractory waste degradation |
| 08/17/1991 | CA2036292A1 Apparatus for continuous purification of liquids |
| 08/16/1991 | CA2036364A1 Method and apparatus for the decontamination of formations below ground level |
| 08/14/1991 | EP0441512A2 Oil- absorbent polymer and use therefor |
| 08/14/1991 | EP0441355A1 Process and device for removal of hydrogen from closed water loops |
| 08/14/1991 | EP0441230A1 Apparatus for separation by pressurization and flotation |
| 08/14/1991 | EP0441209A1 Method for the utilization of carbon black coming from synthesis gas production |
| 08/14/1991 | EP0441194A2 Apparatus for obtaining treated liquid in form of a condensate from an untreated liquid |
| 08/14/1991 | EP0441175A2 Process and apparatus for purifying, recovering and recycling hot aqueous degreasing baths and spray washers |
| 08/14/1991 | EP0440962A2 Composition for gelling liquids |
| 08/14/1991 | EP0440773A1 Photoenhanced anaerobic digestion of organic acids |
| 08/14/1991 | EP0440639A1 Improvements in or relating to the sanitation of swimming pool water. |
| 08/14/1991 | EP0304427B1 Process for dephenolating waste water from coking plants |
| 08/14/1991 | EP0267962B1 Bacterial composition and method for purifying water and soil of oil pollution |
| 08/14/1991 | DE4029860A1 Magnetised and centrifuged water-air mixt. formation - charged with negative ions for curative purposes |
| 08/14/1991 | DE4004368A1 Fine coke addn. to contaminated earth before washing - aids sepn. of heavy metals and hydrocarbon(s) |
| 08/14/1991 | CN2082719U Magnetic water device |
| 08/14/1991 | CN2082570U Multipurpose strongly magnetized cup underlay |
| 08/14/1991 | CN1053782A Ion exchanging type antiscale agent of softened water |
| 08/14/1991 | CN1053727A Anti-microbial agent |
| 08/13/1991 | WO1991012061A1 Dual chamber water filter |
| 08/13/1991 | US5039787 Method for production of cationic water-soluble resin and water-treating agent containing said resin based on imine modified polyethylene glycol halohydrin ethers |
| 08/13/1991 | US5039498 Processes for the purification of flue gases |
| 08/13/1991 | US5039429 Catalytic decomposition in presence of group 8 oxide yields oxygen and aqueous chloride solution |
| 08/13/1991 | US5039428 Waste water treatment process using improved recycle of high density sludge |
| 08/13/1991 | US5039427 Method of treating lake water with aluminum hydroxide sulfate |
| 08/13/1991 | US5039424 Absorption, desorption; pollution control |
| 08/13/1991 | US5039423 Treating with gaseous chlorine dioxide to kill microorganisms, stripping to remove volatiles, passing through anionic exchange resin |
| 08/13/1991 | US5039416 Process for the purification of industrial waste-waters |
| 08/13/1991 | US5039414 Process for separating and/or recovering hydrocarbon oils from water using biodegradable absorbent sponges |
| 08/13/1991 | US5039413 Spiral wrapped fluid treatment element |
| 08/13/1991 | US5039411 Fluid purifying apparatus and method of purifying fluids |
| 08/13/1991 | US5039402 Water purifier |
| 08/13/1991 | US5039383 Continuous removal of product to prevent corrosion of electrodes |
| 08/13/1991 | US5039350 Method for the decomposition of halogenated organic compounds in a contaminated medium |
| 08/13/1991 | CA1287697C Solid chlorine dispenser for spas |