| Patents for C02F 9 - Multistep treatment of water, waste water or sewage (41,429) |
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| 06/12/2002 | CN2494827Y Novel domestic water purifier |
| 06/12/2002 | CN1353092A Ion exchange process for cleaning water |
| 06/12/2002 | CN1353091A Water purifying appliance |
| 06/11/2002 | US6402957 Bromine biocide removal |
| 06/06/2002 | WO2002026367A3 Apparatus and method for increasing oxygen levels in a liquid |
| 06/06/2002 | US20020068676 Methods for centrifugally separating mixed components of a fluid stream |
| 06/06/2002 | US20020068673 Methods for centrifugally separating mixed components of a fluid stream under a pressure differential |
| 06/06/2002 | DE10060280A1 Method for elimination of nitrogen in clarification basins using plants or other soil filters comprises mechanical pre-clarification, denitrification, clarification using plants and recirculation |
| 06/05/2002 | EP1210299A2 Method of producing hydroxyl radicals for chemical reactions |
| 06/05/2002 | CN2494356Y Multifunctional central water treating device |
| 06/05/2002 | CN1352622A Apparatus for oxidatively destructing trace injurious substance |
| 06/04/2002 | US6398965 Water treatment system and process |
| 06/04/2002 | US6398964 Process for treating aqueous waste containing copper and copper CMP particles |
| 06/04/2002 | US6398928 Electrolytic ozone generating method, system and ozone water producing system |
| 05/30/2002 | WO2002042229A1 A method for bacterially treating small-tank toilet systems and an apparatus for using same |
| 05/30/2002 | WO2002042225A1 Method and apparatus for monitoring an ozone generator in a household water purifier |
| 05/30/2002 | WO2002042224A1 Method and apparatus for controlling a household water purifier |
| 05/30/2002 | WO2002042218A1 Sensor for a water treatment apparatus |
| 05/30/2002 | WO2002042217A1 Filter assembly for a household water purifier |
| 05/30/2002 | WO2002042216A2 Ozone generator |
| 05/30/2002 | US20020063088 For producing high-purity water used as washing water in the manufacturing of semiconductor devices |
| 05/29/2002 | EP1208064A1 Improvements in water generating devices |
| 05/29/2002 | DE10154471A1 Domestic water softener has heated plates trapping limestone scale subsequently liberated by mechanical expansion action |
| 05/29/2002 | CN2493616Y Purifier for domestic sewage |
| 05/29/2002 | CN2493615Y Discharge filter |
| 05/29/2002 | CN2493614Y Neutral water treatment reuse vehicle-washing equipment |
| 05/29/2002 | CN2493613Y Forced water regenerator for washing machine |
| 05/29/2002 | CN1351513A Water dispensing apparatus with filter integrity testing system |
| 05/29/2002 | CN1350986A Process for treating recovered water in oil field |
| 05/28/2002 | US6393775 Utilities container |
| 05/28/2002 | CA2170240C Treatment method for waste sludge comprising at least one metal |
| 05/28/2002 | CA2064124C Process for the detoxification of cyanide-containing aqueous solutions |
| 05/23/2002 | WO2002040414A1 Water purifying kits |
| 05/23/2002 | WO2001079117A3 Method and apparatus for treating of water/wastewater |
| 05/23/2002 | US20020061265 Dielectric element, opposed end cap members and a gas passageway between a high voltage electrode and a ground plane positioned internal of the dielectric element, securing member holding the end caps in place |
| 05/23/2002 | US20020060190 Method and apparatus for monitoring an ozone generator in a household water purifier |
| 05/23/2002 | US20020060189 Method and apparatus for controlling a household water purifier |
| 05/23/2002 | US20020060177 Filter assembly for a household water purifier |
| 05/23/2002 | US20020060175 Sensor for a water treatment apparatus |
| 05/23/2002 | US20020059870 Beverage brewing system and method for using same |
| 05/23/2002 | CA2428859A1 Water purifying kits |
| 05/22/2002 | EP1206416A1 Hybrid chemical and biological process for decontaminating sludge from municipal sewage |
| 05/22/2002 | EP1206413A1 System and method for treating water circulating in open-circuit cooling systems |
| 05/22/2002 | CN2492553Y Water-purifying and-mineralizing device for drinking fountain |
| 05/22/2002 | CN2492552Y Ceramic warm water purifier |
| 05/22/2002 | CN1349942A Multifunctional centralized water treater |
| 05/22/2002 | CN1349941A Fast swill treating method and treater |
| 05/22/2002 | CN1349938A Efficient micro-power consumption domestic sewage treater |
| 05/21/2002 | US6391209 Recycling fluid, oxidation, connecting, coupling, controlling and heating |
| 05/21/2002 | US6391202 Process and apparatus for treating wastewater from oil plant processing and cereal processing |
| 05/21/2002 | CA2208970C Method for treating waste water sludge |
| 05/16/2002 | WO2002038512A1 Wastewater treatment system and method using cavitating waterjets |
| 05/16/2002 | WO2002038254A1 Method and apparatus for treatment of drinking water |
| 05/16/2002 | US20020056688 Feeding stream into electrochemical cell wherein electricity passes through and coaggulates the stream, then passing the mixed liquid into flotation cell |
| 05/15/2002 | EP1204607A1 Method and arrangement for purification of water |
| 05/15/2002 | EP1204605A1 Device and method for purification of waste water |
| 05/15/2002 | CN2491449Y High power rare-earth magnetizing ion water equipment |
| 05/15/2002 | CN2491448Y Sewage, water water circulating and purifying installation |
| 05/14/2002 | US6387280 Process for reducing the amount of nitrification-inhibiting sulfur compounds |
| 05/14/2002 | US6387274 Continuous processing; injecting coagulants; static ixing; filtration |
| 05/14/2002 | CA2023415C Process for purifying the effluent from urea production plants |
| 05/10/2002 | WO2002036499A2 Treatment of waste water and apparatus therefor |
| 05/10/2002 | WO2002036238A1 Method and apparatus for processing wet material |
| 05/08/2002 | EP1202937A1 Treatment of contaminated liquids with oxidizing gases and liquids |
| 05/08/2002 | EP1202934A1 Flotation pile oil/water separator apparatus |
| 05/08/2002 | EP0938453B1 Process for the removal of dissolved metals and/or metalloids from an aqueous medium containing same and having a high content of salt |
| 05/08/2002 | CN1347851A Treatment method of high concentration organic wastewater using biological culture equipment |
| 05/08/2002 | CN1347849A Scrubbed waste water treating and resource recovering process during the production of chlorobenzene |
| 05/07/2002 | US6383399 Treatment of contaminated liquids with oxidizing gases and liquids |
| 05/07/2002 | US6383382 Dual cartridge media housing |
| 05/07/2002 | US6383369 Waste and wastewater treatment and recycling system |
| 05/02/2002 | WO2002034680A1 Reclaiming water and usable brine concentrate from domestic sewage |
| 05/02/2002 | WO2001005717A9 Combined oxidation and chelating adsorption system for removal of mercury from water |
| 05/02/2002 | WO2000048951A9 Poultry processing water recovery and re-use process |
| 05/02/2002 | US20020050478 Thermal water treatment |
| 05/02/2002 | EP1201609A1 Apparatus for oxidatively destructing trace injurious substance |
| 05/02/2002 | EP1200356A1 Process for the treatment of a waste water |
| 05/01/2002 | CN2488911Y Domestic sewage regenerating device |
| 04/30/2002 | US6379560 Water purifying apparatus and method for purifying water |
| 04/30/2002 | US6379555 Wastewater treatment process using an admixed paste of activated carbon and magnesium hydroxide |
| 04/30/2002 | US6379548 System for recovering and treating waste water |
| 04/30/2002 | US6379546 Water pollution control; separate accumulation; membrane filtration |
| 04/30/2002 | US6379539 Point of entry water treatment system |
| 04/30/2002 | US6379538 Apparatus for separation and recovery of liquid and slurry abrasives used for polishing |
| 04/30/2002 | US6379518 Concentration in compartments, ion exchanging and controlling voltage |
| 04/25/2002 | WO2002032814A1 Mobile unit for filtering and sterilizing water |
| 04/25/2002 | US20020046569 Apparatus for the production of freshwater from extremely hot and humid air |
| 04/24/2002 | EP1199386A2 Plating methods and systems |
| 04/24/2002 | EP1198418A1 Water supply unit |
| 04/24/2002 | CN1345699A Method and apparatus for making deodorised drinking-water |
| 04/24/2002 | CN1345698A Physical-chemical method sewage quick purifying and circulation reusing technology and solid-liquid separation special equipment-sewage treating machine |
| 04/24/2002 | CN1083403C Method and apparatus for treatment of solid surfaces |
| 04/24/2002 | CN1083287C Apparatus and method for fluid treatment units connected in parallel |
| 04/24/2002 | CA2359632A1 System and method for treatment of water |
| 04/23/2002 | US6375850 Basification of citric acid solution; filration; acidification; filtration; precipitation; discharging, circulation |
| 04/23/2002 | US6375837 Waste water treatment method being able to treat surface active agent, nitrogen, hydrogen peroxide and phosphor with high efficiency and equipment therefor |
| 04/23/2002 | US6375833 Filter assembly with UV treatment, filter bypass, and clogging indicator |
| 04/18/2002 | WO2002030831A1 Vertical membrane storage system and method of storing liquids using the same |
| 04/18/2002 | US20020043493 Bacteriostatic filter cartridge |
| 04/17/2002 | CN2486548Y Producing equipment for ecological power water |