| Patents for C02F 9 - Multistep treatment of water, waste water or sewage (41,429) |
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| 08/25/2004 | EP1448049A1 Process and means for the treatment of water in an aquaculture system |
| 08/25/2004 | CN1522975A By-pass flow treatment apparatus and process for medium small sized cyclic cooling water system |
| 08/25/2004 | CN1522974A By-pass flow process for treating industrial cyclic cooling water |
| 08/25/2004 | CN1522967A Acid cleaning / cleaning agent process and device after acid cleaning/cleaning ductwork |
| 08/25/2004 | CN1163427C Sewage treatment method and equipment thereof |
| 08/25/2004 | CN1163426C Method for physically activating drinking water |
| 08/25/2004 | CN1163425C Method and apparatus for treating sewage from catering business |
| 08/25/2004 | CN1163424C Sewage quick purifying and circulation reusing process and sewage treating machine for solid-liquid separation |
| 08/25/2004 | CN1163418C Ultra-purity water producing apparatus by high temperature process |
| 08/24/2004 | US6780328 Deionizing water in first stage to remove ionic and/or ionizable contaminants, exposing to organic carbon bond breaking agent, causing non-ionized organic carbon compounds to ionize or become ionizable, deionizing in second stage |
| 08/24/2004 | US6780316 Water filtering apparatus with element support |
| 08/19/2004 | US20040161935 Method of fabricating a semiconductor device |
| 08/19/2004 | US20040159599 Installation for the removal and the deactivation of organisms in the ballast water |
| 08/19/2004 | US20040159596 Water filter materials, water filters and kits containing silver coated particles and processes for using the same |
| 08/19/2004 | DE10304921A1 Minimizing hydrogen cyanide evolution during purification of aqueous waste liquor containing cyanide, e.g. from electroplating, chemical industry, coke oven or ore dressing, involves adding heavy metal compound before oxidation |
| 08/18/2004 | EP1447385A1 A process for treating liquid organic wastes by bidistillation with an intermediate treatment of sulfuric acid |
| 08/18/2004 | EP1447384A1 Apparatus for removing and deactivating organisms present in ballast water |
| 08/18/2004 | EP1446359A1 Method and device for treating hydrophilic sludge by hydraulic turbulence effect combined with oxidation and chemical reactions by additive input |
| 08/18/2004 | CN2633881Y Multipurpose water process for scale-proof and scale-removing |
| 08/18/2004 | CN2633880Y Multifunction water purifying device |
| 08/18/2004 | CN1521133A Treatment method for waste water and waste residue in the production of diosgenin |
| 08/18/2004 | CN1162360C Process for treating sewage of oil recovery |
| 08/18/2004 | CN1162359C Water purifying method and equipment thereof |
| 08/18/2004 | CN1162358C Treating system for waste water |
| 08/18/2004 | CN1162338C Method for treating wastewater containing hazardous matter using electron beam irradiation |
| 08/12/2004 | WO2004067453A1 Method of treating wastewater containing hardly decomposable harmful substances |
| 08/12/2004 | US20040154998 apparatus for sterilizing a food or beverage or water for wound irrigation; fluid is constantly pumped past ozone generator and into holding tank and back to ozone generator, etc. |
| 08/12/2004 | US20040154968 Waste treatment and disposal system |
| 08/12/2004 | CA2514377A1 Method of treating wastewater containing hardly decomposable harmful substances |
| 08/11/2004 | EP1328480B1 Mobile unit for filtering and sterilizing water |
| 08/11/2004 | CN2632082Y Composite water purifier |
| 08/11/2004 | CN2632081Y Sewage treating apparatus for small town |
| 08/11/2004 | CN2632080Y Electrocoagulation integrated portable living water apparatus |
| 08/11/2004 | CN1520384A ELectrodeionization appts. and method |
| 08/11/2004 | CN1519211A Sequential batch type method and equipment for treating waterwater by using biologic dephosphorization and intermittent aeration continuously |
| 08/11/2004 | CN1519210A Method for treating wastewater containing methyl alcohol in low concentration |
| 08/11/2004 | CN1161290C Treating process of waste water containing binary acid and its appts |
| 08/11/2004 | CN1161289C Method and device for purifying slightly polluted water source by using air floated biological active carbon |
| 08/11/2004 | CN1161288C Method of treated sewage being utilized as compensation water of cooling system |
| 08/11/2004 | CN1161283C Ecological mineral solution and its prepn |
| 08/10/2004 | US6773609 Increasing efficiency of oxidative destruction of such as dioxins or pcbs; using fine bubbles of ozone |
| 08/10/2004 | US6773608 Ultraviolet treatment for aqueous liquids |
| 08/10/2004 | US6773592 Introducing inoculum of selected micro-organisms into quiescent zone in sewerage conduit system, inoculum comprising a competitive culture of favourable microorganisms which on incubation is able to out compete undesirable microorganisms |
| 08/10/2004 | US6773588 Purified water supply system |
| 08/10/2004 | US6773587 Point-of-use water treatment system |
| 08/05/2004 | WO2004065701A1 Rainwater filtration and collection system |
| 08/05/2004 | WO2003062495A3 Method and apparatus for mediated electrochemical redox reaction |
| 08/05/2004 | US20040149663 Water treating device |
| 08/05/2004 | US20040149643 Portable, refillable water dispenser serving batches of water purified of organic and inorganic pollutants |
| 08/05/2004 | US20040149571 Electrolysis cell for generating halogen (and particularly chlorine) dioxide in an appliance |
| 08/04/2004 | CN2630242Y Chemical-biological flocculation reactor-suspension filler bed sewage treating device |
| 08/04/2004 | CN1517311A Water treatment device with ultrasonic generator |
| 08/04/2004 | CN1517310A 排水处理方法 Wastewater treatment method |
| 08/03/2004 | US6770198 Inoculation, incubation |
| 08/03/2004 | US6770192 Water system for bacteria control |
| 07/31/2004 | CA2419586A1 Aquadynamic microbiological control system |
| 07/29/2004 | WO2004063100A2 Sanitization system and system components producing ozonated liquid |
| 07/29/2004 | WO2004063098A2 Pulsed electric field sanitization system and system components |
| 07/29/2004 | WO2004063097A1 Method of adding active carbon in water purification and method of water purification |
| 07/29/2004 | WO2004062769A1 Filter cartridge having bypass feature |
| 07/29/2004 | US20040144735 Process for removing interstitual water from a wastewater sludge |
| 07/29/2004 | US20040144727 Drawing water from a pressurized water source through a controlling device to a treating vessel; contacting said water with pressurized air to release hydrogen sulfide and offensive odors; flowing the water through a filter bed of calcite mineral |
| 07/29/2004 | US20040144718 Process and plant for cleaning waste water |
| 07/29/2004 | US20040144704 System to save and recycle domestic water |
| 07/29/2004 | CA2512935A1 Sanitization system and system components |
| 07/28/2004 | EP1440944A1 Waste water treatment method |
| 07/28/2004 | EP1090668B1 Chelate-forming filter, process for producing the same |
| 07/28/2004 | CN1516679A Method of wastewate treatment and wastewater treatment apparatus |
| 07/28/2004 | CN1516676A Method and apparatus for disinfecting refrigerated water cooler reservoir |
| 07/28/2004 | CN1515512A Pipe network impurity and secondary pollution treatment system |
| 07/28/2004 | CN1515511A Neutralizing agent for treating acid waste water produced by cold-rolling process in metallurgical industry and its process method |
| 07/28/2004 | CN1159407C Composition for washing oil-well, piepline, sleeve pipe, stratum and equipments and using method thereof |
| 07/28/2004 | CN1159237C Process and gas-film air tower for treating hydrazine contained sewage generated in production of azodimethylamide |
| 07/28/2004 | CN1159236C Process for treating intermediate waste papermaking water by use of waste |
| 07/28/2004 | CN1159231C Method and device for treating waste water containing acetic acid |
| 07/28/2004 | CN1159083C Portable drinking water regenerating and distributing device |
| 07/27/2004 | US6767463 Method for minimizing the new water use in the water circulation system of a treatment plant |
| 07/27/2004 | US6767458 Ultraviolet generator used in water purification system |
| 07/27/2004 | US6767454 Ink flocculation; solid, liquid separation; water distillation |
| 07/22/2004 | WO2004011377A3 Treatment of wastewater by biological and membrane separation technologies |
| 07/22/2004 | WO2003071568A3 Starter assembly for a gas discharge lamp |
| 07/22/2004 | US20040140269 Spiral water transmitting tube enclosing quartz tube; drinking water treatment; double-spiral water flow causes ozone gas and water to mix and dissolve homogenously |
| 07/21/2004 | EP1438116A1 Water filtering apparatus |
| 07/21/2004 | CN2626993Y Six-stage water purifier |
| 07/21/2004 | CN2626992Y Apparatus for purifying slightly polluted water source |
| 07/21/2004 | CN1513778A Method of eliminating nitrite and ammonia nitrogen in aquatic culture |
| 07/21/2004 | CN1513777A Permangnate preoxidation and bioactive carbon combined use to remove contamination technique |
| 07/20/2004 | US6764595 Fluid treatment system |
| 07/20/2004 | US6764594 Reservoir for reverse osmosis type water filtering system |
| 07/15/2004 | WO2004052793A3 Solar powered portable water purifier |
| 07/15/2004 | WO2004024289A3 Method and apparatus for treating water |
| 07/15/2004 | US20040134856 sludge flocculation/aeration/oxidation/filtration through membrane; pollution control |
| 07/15/2004 | US20040134847 Water activating apparatus |
| 07/15/2004 | US20040134796 Electrochemical treatment of ammonia in waste-water |
| 07/15/2004 | DE10261419A1 Domestic water purifier without the need for a storage vessel has as its main filter a nanofiltration membrane of specified pore size |
| 07/15/2004 | DE10259915A1 Filterelement für eine Klärvorrichtung zur biologischen Reinigung von Wasser Filter element for a clarifier for biological treatment of water |
| 07/14/2004 | EP1437329A2 Water treatment apparatus |
| 07/14/2004 | CN1511795A High chrominance printing and dyeing waste water treating process without producing mud |
| 07/14/2004 | CN1511794A Household domestic sewage treating method and its device |
| 07/14/2004 | CN1157361C Dilute acid oxidation of dinitrotoluene alkaline wash water and its relative use |