| Patents for C02F 1 - Treatment of water, waste water, or sewage (145,124) |
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| 05/08/1991 | DE3936964A1 Electrode system esp. for recovering metal from process water - comprising endless band electrode around side parts and tensioned by sheet anode between parts |
| 05/08/1991 | DE3936611A1 Domestic drinking water supplier - has filter cartridge remaining wet to resist microbial entry |
| 05/08/1991 | CN2076546U Sewage treatment device having new bio-disc |
| 05/08/1991 | CN2076545U Strong magnetic apparatus for magnetizing water |
| 05/08/1991 | CN2076544U Multi-effective magnetizing apparatus |
| 05/08/1991 | CN2076442U Electric dialyzer |
| 05/08/1991 | CN1051206A Full-automatic electroplating waste water treatment technology with maximum energy-saving |
| 05/08/1991 | CN1051157A High-molecular cpd. coagulant and prepn. thereof |
| 05/08/1991 | CN1051156A Low-dosage radioactive cement components for sewage disposal |
| 05/08/1991 | CN1012570B Process for treating ammonium nitrate-centg. waste water |
| 05/08/1991 | CN1012569B Oxygen supplying and water clarifying agent for aquatic culture |
| 05/07/1991 | US5013755 Germicidal composition |
| 05/07/1991 | US5013481 Boiler chemicals and method of preventing corrosion of boilers |
| 05/07/1991 | US5013459 Opthalmic fluid dispensing method |
| 05/07/1991 | US5013458 Heating sludge by exothermic hydration of calcium oxide |
| 05/07/1991 | US5013456 Diallyldimethyl ammonium chloride polymers with anionic monomers for coagulating deinking process waters |
| 05/07/1991 | US5013454 Method of removing organic substances from effluents from pulp and paper manufacturing processes |
| 05/07/1991 | US5013453 Forming ferric hydroxide precipitate in which trace metals are occluded |
| 05/07/1991 | US5013450 Method and solid material body for the purification of fluids such as water, aqueous fluids and liquid fuels |
| 05/07/1991 | US5013449 Process for solute recovery utilizing recycle liquids having a stored concentration profile |
| 05/07/1991 | US5013429 Apparatus for stabilizing sludge |
| 05/07/1991 | US5013417 Water purifier |
| 05/07/1991 | US5013415 Liquid purification system |
| 05/07/1991 | US5013344 Icemaker and water purifier with controlled condensing temperature |
| 05/07/1991 | CA1283985C Retention and/or drainage and/or dewatering aid |
| 05/07/1991 | CA1283984C Removal of metals from solutions |
| 05/04/1991 | CA2026714A1 Hydrogen peroxide destroying compositions and methods of using same |
| 05/02/1991 | WO1991005971A1 Method and apparatus for avoiding scaling in water conduits and in any water piping system |
| 05/02/1991 | WO1991005738A1 Process and device for removing oily impurities from water |
| 05/02/1991 | EP0425143A2 Stabilization of isothiazolones |
| 05/02/1991 | EP0424455A1 Apparatus for treating a fluid |
| 05/02/1991 | DE3936082A1 Decontaminating waste water contg. cyanide using sodium hypochlorite - controlling feed time and rate of hypochlorite to limit concn. of chloro-cyan |
| 05/02/1991 | DE3935506A1 Removing hydrocarbon(s) from condensate water obtd. in dry cleaning - by liq.-liq. extn. followed by adsorption |
| 05/02/1991 | DE3935445A1 Purifying waste water contg. volatiles, esp. hydrocarbon(s) - by treating with current of air in appts. comprising desorption column at reduced pressure and adsorption column |
| 05/01/1991 | CN2076100U Dualpurpose tank used in water treatment and decontamination |
| 05/01/1991 | CN2076099U Sewage treatment apparatus by electrochemical method |
| 05/01/1991 | CN2076098U Multiposition combined water leading valve |
| 05/01/1991 | CN2076097U Sloping plate oil-water separator with wings |
| 05/01/1991 | CN1051063A Continuous treatment system of waste paper pulp liquors |
| 05/01/1991 | CN1051031A Treatment and recovery process of waste water in fabric board production |
| 05/01/1991 | CN1051030A Superconducting water treatment unit |
| 05/01/1991 | CN1012493B Source aquatics of ferrous iron ions used for eliminating hydrogen sulfide in marine breeding of aquatics |
| 04/30/1991 | US5012110 Substrate and process and apparatus for the production therefor |
| 04/30/1991 | US5011615 Placing holder with biocide in cooling water passage inlets, diffusion into static water; molluscicides |
| 04/30/1991 | US5011614 Process for the decomposition of explosive nitric acid esters dissolved in wastewaters |
| 04/30/1991 | US5011613 Method for regulating the residual free chlorine in water |
| 04/30/1991 | US5011610 Reduction of metals in oxygen-free atmosphere by using calcium sulfite |
| 04/30/1991 | US5011605 Sewage treatment plant |
| 04/30/1991 | US5011602 Fabric container with microbiocides on carrier for sustained release; nonfouling |
| 04/30/1991 | US5011599 Ozonization to diamino-s-triazine; metabolism, degradation to carbon dioxide and ammonium |
| 04/30/1991 | US5011597 Single cell vertical static flow flotation unit |
| 04/30/1991 | US5011571 Evaporation |
| 04/30/1991 | US5011524 Transferring heat from water to collected ice pieces |
| 04/30/1991 | CA1283748C Vinylamine copolymer, flocculating agent and paper strength increasingagent using the same, as well as process for producing the same |
| 04/28/1991 | WO1991006701A1 Method of processing used paper in the presence of hydroxysulphonate salts |
| 04/28/1991 | WO1991006217A1 A process of combatting microorganisms |
| 04/28/1991 | CA2071823A1 Process for regenerating wastepaper in the presence of hydroxysulfaonate salts |
| 04/25/1991 | DE3934958A1 Device for biological cleaning of waste water - has inlet water flow divided unequally between cascade denitrification and nitrification to equalise biomass formation |
| 04/25/1991 | CA2027241A1 Stabilized metal salt/3-isothiazolone combinations |
| 04/24/1991 | WO1991005740A1 Apparatus and method for monitoring a water treatment system |
| 04/24/1991 | EP0424246A1 Process for elimination of organic matters, which are dissolved or dispersed in an aqueous solution, e.g. radio-active effluents |
| 04/24/1991 | EP0423923A1 Water treatment apparatus |
| 04/24/1991 | EP0423889A1 Method and installation for processing manure, fermented manure and Kjeldahl-N containing waste water |
| 04/24/1991 | EP0423827A1 Magnetic treatment device, especially for water |
| 04/24/1991 | EP0423404A1 Process for high-load treatment of carbohydrate-containing waste water |
| 04/24/1991 | CN2075647U Water purifier with indicator for the saturation of adsorbent |
| 04/24/1991 | CN2075534U High-efficient coagulative reaction, precipitation tank |
| 04/24/1991 | CN1050858A Treating method of methyl sulfur bacterium panacea waste water |
| 04/24/1991 | CA2071841A1 Apparatus and method for monitoring a water treatment system |
| 04/23/1991 | US5010181 Chitin containing layer of chitosan |
| 04/23/1991 | US5010066 Biocidal compositions and use thereof containing a synergistic mixture of N-tributyl tetradecyl phosphonium chloride and N-dodecylguanidine |
| 04/23/1991 | US5009869 Using electrochemical cell |
| 04/23/1991 | US5009848 On board automatic diesel engine cooling water chemical treatment dispensing system |
| 04/23/1991 | US5009791 Filtering, removing ferromagnetic particles, passing through magnetic field |
| 04/23/1991 | US5009790 Pollution control |
| 04/23/1991 | US5009172 Method for and apparatus of thermal treatment of human waste |
| 04/19/1991 | WO1991005859A1 Polymer bead containing immobilized metal extractant |
| 04/18/1991 | WO1991005114A1 Water discharging apparatus |
| 04/18/1991 | WO1991005026A1 Oil treatment method |
| 04/18/1991 | WO1991005003A1 Phosphonium compound, composition containing it; and method of disinfection |
| 04/18/1991 | WO1991004949A1 Water purification process |
| 04/18/1991 | WO1991004948A1 Highly selective zeolites for removal of ammonium from a wastewater |
| 04/18/1991 | WO1991004782A1 Method and electrodialyzer for removing salts from an electrolytic aqueous solution |
| 04/18/1991 | WO1991004668A1 Disinfectant composition and method of disinfection |
| 04/18/1991 | CA2027787A1 Method and installation for processing manure, fermented manure and kjeldahl-n containing waste water |
| 04/17/1991 | EP0422948A2 Use of a water soluble ionene polymer for inhibiting bacterial adhesion and controlling biological fouling in aqueous systems |
| 04/17/1991 | EP0422585A2 Novel product/process/application for improving carbon adsorptive capacity by oxygen addition in aqueous systems |
| 04/17/1991 | EP0422453A2 Process for purifying water |
| 04/17/1991 | CN1050708A Polysilicate flocculant and preparing process thereof |
| 04/17/1991 | CN1050686A Flocculant for water treatment |
| 04/17/1991 | CN1012359B Method and apparatus for treating waste liquor of plating |
| 04/17/1991 | CN1012358B Method of treating penicillin waste water |
| 04/17/1991 | CN1012357B Method for recovery of cyanide |
| 04/17/1991 | CN1012356B Treatment method of drained waste water in antibiotic production |
| 04/16/1991 | US5008319 Homogeneous mixtures of solid organic acids and solid cationic ester-based polymer flocculants |
| 04/16/1991 | US5008224 Adsorbent for phosphorus and method for production of adsorbent for phosphorus |
| 04/16/1991 | US5008106 Method for reducing the microbial content of surfaces with a microbiocidal, anhydrous complex of PVP-H2 O2 |
| 04/16/1991 | US5008097 Aqueous solution containing a new ferric ferrous salt Fe2 Cl5 and method of producing same |
| 04/16/1991 | US5008095 Clear and colorless basic aluminum chlorosulfates |
| 04/16/1991 | US5008093 Anhydrous complexes of PVP and hydrogen peroxide |