| Patents for C02F 9 - Multistep treatment of water, waste water or sewage (41,429) |
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| 05/07/2003 | CN1416407A Appts. and method for purifying wastewater |
| 05/07/2003 | CN1416406A Method and device for effluent treatment |
| 05/07/2003 | CN1415565A Method for treating waste water of azo dye |
| 05/07/2003 | CN1415564A Method for treating printing and dyeing waste water |
| 05/07/2003 | CN1415563A Method of treated sewage being utilized as compensation water of cooling system |
| 05/07/2003 | CN1107656C Process for purifying high-turbidity water and equipment thereof |
| 05/07/2003 | CN1107648C Method for treating benzene extraction waste liquor in prodn. of caprolactam |
| 05/06/2003 | US6558550 Grease trap waste; converted into biosolids (sludge) and water dischargeable to the environment; screening, grinding, pasteurizing, alkaline compound aids in dewatering, filter press, CO2 to precipitate out calcium, clarification |
| 05/06/2003 | US6558537 Portable hydration system |
| 05/02/2003 | EP1177025A4 Improved water purification pack |
| 05/02/2003 | EP1015389B1 Oxygenated water cooler |
| 05/01/2003 | WO2003034817A1 Process and means for the treatment of water in an aquaculture system |
| 05/01/2003 | WO2003022751B1 Method of multi-stage reverse osmosis treatment |
| 05/01/2003 | US20030082865 Fabrication method of semiconductor integrated circuit device |
| 05/01/2003 | US20030082084 Methods for removing heavy metals from water using chemical precipitation and field separation methods |
| 05/01/2003 | CA2462759A1 Process and means for the treatment of water in an aquaculture system |
| 04/30/2003 | DE20301878U1 Sewage treatment has a settling pond, which collects rain water, to take the effluent inflow for aeration, to be passed on to a membrane stage with micro-filters and a biological cleaning action |
| 04/30/2003 | CN1413928A Treatment technology for acrylic fibers waste water by dry process |
| 04/30/2003 | CN1413927A Technology and equipment for purifying process water |
| 04/29/2003 | US6555350 Providing an aqueous slurry of the biomass material, heating in presence of oxygen; partial hydrolysis of cellulose and hemicellulose; ethanol fermentation; separating the ethanol; subjecting wastewater effluent to a treatment |
| 04/29/2003 | US6555011 Method for disinfecting and purifying liquids and gasses |
| 04/24/2003 | US20030075494 Apparatus for providing electrical power, fuel gas, and pure water to a building |
| 04/23/2003 | CN2546441Y Regenerated water recovery treating apparatus |
| 04/23/2003 | CN1412134A Urban domestic sewage treatment process and its method |
| 04/23/2003 | CN1412133A Air-stirring sludge-refluxing chemical flocculation precipitation sewage treatment method |
| 04/23/2003 | CN1106351C Liquid sterilisation apparatus |
| 04/22/2003 | US6551518 Combined ozonation and electrolytic chlorination water purification method |
| 04/17/2003 | WO2003031351A1 System for purifying water and method for dispensing purified water |
| 04/17/2003 | WO2003031348A2 Process for recovering and recycling compounds contained in effluents of delignification and bleaching processes in pulp mills |
| 04/17/2003 | WO2003031341A1 Mobile cube for the production of energy and the purification of water by reverse osmosis and similar techniques |
| 04/17/2003 | US20030071069 Method and apparatus for disinfecting a refrigerated water cooler reservoir and its dispensing spigot(s) |
| 04/17/2003 | US20030070996 Comprises water with chlorine, ammonia, then with ozone to disinfect, then passing through a filter containing microorganisms, then further chlorination |
| 04/17/2003 | US20030070993 Electrochemical cell for removing contaminants from a wastewater stream |
| 04/17/2003 | US20030070986 Method and device for sewage treatment |
| 04/17/2003 | US20030070968 Water filtering apparatus |
| 04/16/2003 | CN2544520Y Fullautomatic multifunctional rareearth ion sprinkler |
| 04/16/2003 | CN1410374A Garbage percolation liquid treatment method |
| 04/16/2003 | CN1410373A High adsorptivity, photo catalytic and mineralization treatment unit for drinking water |
| 04/16/2003 | CN1410372A Method of treating oil field waste water using flocculation electro multiphase catalysis and special flocculation equipment |
| 04/16/2003 | CN1410371A Treatment method of spent water from cleaning machinery parts |
| 04/16/2003 | CN1410370A Balanced/nonbalanced water treatment technology and its equipment |
| 04/16/2003 | CN1410369A Preparation method and application of mineral water |
| 04/16/2003 | CN1410368A Domestic mid-water reuse device |
| 04/15/2003 | US6547970 Supplying flocculant; filtration; cleaning ink from rolls |
| 04/15/2003 | US6547969 Adding a calcium compound; coagulation; filtration |
| 04/10/2003 | WO2003029154A1 Water processing apparatus |
| 04/09/2003 | EP1299315A1 Improved chemical treatment methods and apparatus |
| 04/09/2003 | EP1299314A1 Method and apparatus for the treatment of biological suspensions |
| 04/09/2003 | EP1299311A1 Method and device for treating industrial effluents to eliminate organic and/or mineral pollution |
| 04/09/2003 | EP1299275A1 Washing and recycling unit and method for on-site washing of heavy machinery |
| 04/09/2003 | EP1147062B1 Method and installation for sanitizing surface water |
| 04/09/2003 | EP1021379B1 Water purifying and dispensing apparatus |
| 04/09/2003 | CN1408945A Process for treating waste water of paper-making |
| 04/09/2003 | CN1408654A Energy saving water molecule physical delay optimizing oxidation treatment process |
| 04/09/2003 | CN1408653A Producing process and technology for electronic grade water by intergrated film process |
| 04/09/2003 | CN1408652A Nitrogen treating method and nitrogen treating system |
| 04/03/2003 | US20030062313 Method of improving the quality of liquid and its device |
| 04/02/2003 | EP1296895A2 Water processing unit |
| 04/02/2003 | EP1102724B1 Method and installation for treating waste water from oil seed and cereal processing |
| 04/02/2003 | EP1091909B1 Method for absorbing heavy metals |
| 04/02/2003 | CN1407951A Device and method for treating water with ozone generated by water electrolysis |
| 04/02/2003 | CN1406883A Sewage treatment |
| 04/02/2003 | CN1406882A Process for treating acid waste water for depositing vanadium |
| 04/02/2003 | CN1406881A Scouring waste water closed circulating method |
| 04/02/2003 | CN1406658A Manifold branch for changeable liquid filter |
| 04/02/2003 | CN1104382C Device for creation of oxidation and pptn. zone or reduction zone in aquifer |
| 04/01/2003 | US6540916 For purification of liquids |
| 03/27/2003 | WO2003024875A2 Method for the biological and chemical/oxidative treatment of waste water containing dye |
| 03/27/2003 | US20030057160 Flushing to a holding tank, mixing with an alkaline solution to kill pathogens, separating solids and liquids after said neutralization, treating and recycling the liquid, and separating the solids for use as animal feed or as fertilizer |
| 03/26/2003 | EP1295853A2 Method of treating water and apparatus therefor |
| 03/26/2003 | EP1295641A1 Heated ultrasonic treating device and treating method for suspended matter-containing liquid |
| 03/26/2003 | EP1294647A1 Method and device for purifying and treating waste water in order to obtain drinking water |
| 03/26/2003 | EP1294646A2 Devices and method for production of traceable immunizing drinking water, other liquids and gas |
| 03/26/2003 | EP1294645A1 Physico-chemical method for eliminating toxic and/or precious heavy metals contained in urban, industrial sludge and liquid animal manure |
| 03/26/2003 | EP1294644A2 Water treatment compositions |
| 03/26/2003 | EP1294642A1 Method for treatment of water containing humic matter for the production of drinking water with enhanced coagulation stage using inorganics polymers of al and activated sio2 |
| 03/26/2003 | EP0881928B1 Refrigerator water filter |
| 03/26/2003 | CN1406211A Method and apparatus for low cost water disinfection |
| 03/26/2003 | CN1405264A Composition for washing oil-gas well, pipeline, sleeve pipe, stratum and equipments and using method thereof |
| 03/26/2003 | CN1405102A Method for treating sewage by DSD acid reduction acid bleeding |
| 03/26/2003 | CN1405101A Method for treatment of waste mud-slurry of oil-field well-drilling |
| 03/26/2003 | CN1103749C Treatment of effluent streams containing organic acids |
| 03/26/2003 | CN1103743C Water treatment method and apparatus for treating waste water by using ion exchange resin |
| 03/25/2003 | US6537456 Method and apparatus for high efficiency reverse osmosis operation |
| 03/20/2003 | WO2003022751A1 Method of multi-stage reverse osmosis treatment |
| 03/20/2003 | WO2003022749A1 Ozone/uv combination for the decomposition of endocrine substances |
| 03/20/2003 | WO2003022748A1 System and method for water treatment |
| 03/20/2003 | WO2003022745A1 Self contained water filter having zeolites, filtration membranes and water flow rate control means |
| 03/20/2003 | WO2003022396A1 Oil/water separation system |
| 03/20/2003 | US20030052062 Cathode and anode reaction regions defined by a cation exchange membrane and the for-treatment water treated according to electrochemical technique is treated with hypohalogenous acid, or, ozone or active oxygen |
| 03/19/2003 | EP1293485A1 Method for treating industrial waste water |
| 03/19/2003 | EP1147063B1 Process for the treatment of waste water containing heavy metals |
| 03/19/2003 | CN2540408Y Multifunctional biochemical treatment device for oil field sewage |
| 03/19/2003 | CN2540407Y Multifunctional oxygen-riched water purifying device |
| 03/19/2003 | CN1403394A Pre-treating method of metacresol production effluent |
| 03/19/2003 | CN1403393A Treating method of metacresol production effluent |
| 03/19/2003 | CN1403392A Sulfonation effluent treating and resource recovering method for 1,2,4-acid producing process |
| 03/19/2003 | CN1403391A Sewage treating process |
| 03/18/2003 | US6533942 Cooling tower water cleaning system |
| 03/18/2003 | US6533930 Point-of-use water treatment system |