| Patents for C02F 9 - Multistep treatment of water, waste water or sewage (41,429) |
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| 01/07/2004 | EP1378493A2 Spa water circulation system comprising a water purification system |
| 01/07/2004 | CN1465536A Sea water and saline water desalination agent and desalination process thereof |
| 01/06/2004 | US6673321 Apparatus and process for extracting and recovering metals from aqueous solutions |
| 01/06/2004 | US6673250 Used to monitor various functional and operational aspects of the electromagnetic radiation emitting assembly and a filter assembly used in the fluid treatment system. |
| 01/02/2004 | EP1375439A1 Liquid treatment method and apparatus |
| 01/02/2004 | EP1375437A1 Apparatus and method for treating wastewater containing nitrogen-containing dyes |
| 01/01/2004 | US20040000323 Mixing with hydrogen peroxide; separation by flotation |
| 12/31/2003 | WO2004000732A1 Water purification system |
| 12/31/2003 | CN2595802Y Clea separator for water treatment |
| 12/31/2003 | CN2595801Y Circulation water treating device for car washing site |
| 12/31/2003 | CN1132789C City sewage treatment technology |
| 12/31/2003 | CN1132786C Process without drainage of waste water |
| 12/31/2003 | CN1132785C Method and apparatus for production of drink water and salt |
| 12/30/2003 | US6669838 Apparatus for filtering and sterilizing water utilizing a turbidity and microorganism sensing system |
| 12/24/2003 | WO2003106354A1 Method of purifying fischer-tropsch derived water |
| 12/24/2003 | WO2003106353A1 Method of purifying fischer-tropsch derived water |
| 12/24/2003 | WO2003106351A1 Method of purifying fischer-tropsch derived water |
| 12/24/2003 | WO2003106349A1 Method of purifying fischer-tropsch derived water |
| 12/24/2003 | WO2003106348A1 Methods for reducing boron concentration in high salinity liquid |
| 12/24/2003 | WO2003106347A1 Radio frequency identification system for a fluid treatment system |
| 12/24/2003 | WO2003106346A1 Method of purifying fischer-tropsch derived water |
| 12/24/2003 | WO2003106003A1 Purified water supply system |
| 12/24/2003 | WO2003068693A3 Processes for treating iron-containing waste streams |
| 12/24/2003 | CN2594264Y 家用净水机 Household water purifier |
| 12/24/2003 | CN1463252A Method for treatment of wastewater |
| 12/24/2003 | CN1463176A Bactericide for use in water treatment, method for water treatment and appts. for water treatment |
| 12/24/2003 | CN1462730A Technique for recycling sewage generated by making beer |
| 12/24/2003 | CN1462729A Treatment process for two stage recycling alkali waste liquid drained off by process system of synthesizing octanol |
| 12/24/2003 | CA2487166A1 Radio frequency identification system for a fluid treatment system |
| 12/23/2003 | US6666973 Water treatment by mixing with hydrochloric acid, then heating to decompose lithium hexafluorophosphate into phosphoric acid and hydrogen fluoride, and precipitating calcium fluoride and phosphate by adding calcium hydroxide |
| 12/18/2003 | US20030230531 Method for reducing boron concentration in high salinity liquid |
| 12/17/2003 | EP1129036B1 Bottled water cooler with built-in oxygen generator and oxygen injection system |
| 12/17/2003 | CN1461735A Household photocatalysed drinking water cleaning apparatus |
| 12/17/2003 | CN1131179C Bio-chemical process for treating waste liquid of molasses alcohol |
| 12/17/2003 | CN1131178C Silk-reedling by-product waste water treatment and comprehensive utilization method |
| 12/16/2003 | US6663783 With facilitated flocculation |
| 12/16/2003 | US6663782 Hydrocyclone to aerate wastewater, froth flotation, reducing biological oxygen demand |
| 12/11/2003 | WO2003076340A3 Method and installation for producing ultrapure water |
| 12/11/2003 | WO2003074428A3 Pre- and post-treatment system and method for periphyton filtration using ozone |
| 12/11/2003 | WO2003008336A3 Reverse osmosis pretreatment using low pressure filtration |
| 12/11/2003 | US20030226803 Using ozone and base; supplying ultraviolet radiation; anaerobic digestion tanks |
| 12/11/2003 | DE20302516U1 Anlage zur Entfernung und Deaktivierung von Organismen im Ballastwasser System for removing and disabling of organisms in ballast water |
| 12/10/2003 | EP1368276A1 High efficiency electrolysis cell for generating oxidants in solutions |
| 12/10/2003 | CN2591035Y Water filter |
| 12/10/2003 | CN2591034Y Multifunction civil sewage treatment system |
| 12/10/2003 | CN2591033Y Sewage solid-liquid separator |
| 12/09/2003 | US6660167 Method for precipitating or flocculating substances out of solutions |
| 12/04/2003 | WO2003099732A1 Water filter assembly |
| 12/04/2003 | WO2003099728A1 Method for treatment of sludge from waterworks and wastewater treament plants |
| 12/04/2003 | WO2003099408A1 Device for recovering used water |
| 12/04/2003 | US20030222009 Potable water treatment plant and method of maintaining same |
| 12/04/2003 | US20030222008 Countertop water treatment unit |
| 12/03/2003 | EP1367026A1 Drain treating method, drain treating device and drain treating system |
| 12/03/2003 | EP1365848A1 Combined filter manifold and shut-off valve for a water purification system |
| 12/02/2003 | US6656423 Sterile water generator |
| 11/27/2003 | WO2003097537A1 Method and device for the continuous treatment of water |
| 11/27/2003 | US20030217978 Using pulsed laser; removal impurity particles; wtaer pollution control |
| 11/27/2003 | US20030217977 Recycled irrigation water treatment system |
| 11/27/2003 | US20030217967 Processes for manufacturing water filter materials and water filters |
| 11/27/2003 | US20030217963 Water filter materials and water filters and processes for using the same |
| 11/27/2003 | US20030217958 Quick change filter and bracket system with key system and universal key option |
| 11/26/2003 | EP1364914A1 Method and system for treating nitrogen-containing compound |
| 11/26/2003 | EP1363963A1 Anti-microbial and oxidative co-polymer |
| 11/26/2003 | EP1284932B1 Method for treating an effluent containing in particular nitrogen and/or phosphorus and/or organic matter and/or heavy metals |
| 11/26/2003 | CN1458092A Rich nutritive raw water treating method |
| 11/26/2003 | CN1458091A Waste water treating technology by combination of biochemical and magnetic separation |
| 11/26/2003 | CN1458090A High efficiency treating process for industrial waste water |
| 11/26/2003 | CN1458089A Treating method of polluted or nutritive water |
| 11/26/2003 | CN1458088A Short flow path and high efficiency city wast water treating process ad its special diatomaceous earth waste water treating agent |
| 11/26/2003 | CN1458087A Method for producing deep sea drinking water and deep sea additive using deep sea water throuth desalination and concentration |
| 11/26/2003 | CN1458086A New process for treating waste water |
| 11/26/2003 | CN1457917A Filtering method for colloidal solution |
| 11/26/2003 | CN1128657C Method for reducing scaling in electrodeionization system |
| 11/25/2003 | US6652758 Chemical destruction of ammonia with an oxidizing agent, followed by treatment with calcium salts to precipitate calcium fluoride, and filtration |
| 11/25/2003 | US6652756 Precipitation of phosphates; addition of iron or aluminum salt through toilet flushing |
| 11/20/2003 | WO2003095376A1 Transportable water treatment apparatus |
| 11/20/2003 | WO2003095375A1 Process for the removal of organic sulfur in wastewater including an oxidative pretreatment |
| 11/20/2003 | WO2003095365A2 Water filter assembly |
| 11/20/2003 | WO2003095066A1 Water filter assembly |
| 11/20/2003 | US20030214257 Inductively powered lamp assembly |
| 11/20/2003 | US20030214256 Inductively powered lamp assembly |
| 11/20/2003 | US20030214255 Inductively powered apparatus |
| 11/20/2003 | US20030213755 Portable, operates on solar power; comprises ultraviolet lamp for killing bacteria in stagnant water |
| 11/20/2003 | US20030213754 Recycled irrigation water treatment system with reverse osmosis |
| 11/20/2003 | US20030213737 Modular multi-stage water filtration system |
| 11/20/2003 | US20030213702 Waste disposal apparatus and method |
| 11/20/2003 | US20030213502 Provided separate recycling systems for wash water and rinse water and a balancing system (ultrafiltration or reverse osmosis filtration) that returns and purifies wash and/or rinse water for use at final rinsing of automobiles |
| 11/19/2003 | EP1133449B1 Method for preventing scaling in electrodeionization units |
| 11/19/2003 | CN2586693Y Water filtering element |
| 11/19/2003 | CN2586692Y Multiple sterilizing filtration water purifier |
| 11/19/2003 | CN1457322A Drain treating method, drain treating device and drain treating system |
| 11/19/2003 | CN1457321A Method and system for treating nitrogen-containing compound |
| 11/19/2003 | CN1456521A Process and apparatus for urban refuse cite penetrating liquid by three stage plus one process |
| 11/19/2003 | CN1456520A Micro-flocculation-deep bed direct filtering and synchronously dephosphorizing and nitrogen removing process for urban sewage |
| 11/19/2003 | CN1128110C Physiological microbe-earthworm filter pool system for treating household sewage |
| 11/18/2003 | US6649065 Bromine biocide removal |
| 11/18/2003 | US6649052 Ozone oxidizing apparatus |
| 11/18/2003 | US6649037 Removing weakly ionizable species from water by dissociating pH at differenct levels to facilitate removal from the fluid in an electrodeionization device |
| 11/13/2003 | WO2003093178A1 Organic slurry treatment process |
| 11/13/2003 | WO2003092919A1 Methods of simultaneously cleaning and disinfecting industrial water systems |