| Patents for C02F 9 - Multistep treatment of water, waste water or sewage (41,429) |
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| 01/29/2003 | CN1393391A Vendor for mineral water |
| 01/29/2003 | CN1100008C Process for treating arsenic-containing waste water |
| 01/28/2003 | US6511529 Water treatment during scrubbing of gases from metallurgy blast furnaces by separation of solids, then circulating the water for reuse; pollution control apparatus |
| 01/28/2003 | CA2130181C Treatment of liquid on demand |
| 01/23/2003 | WO2003006379A1 Method and device for decontaminating waters which are loaded with organic halogen compounds (halogenated hydrocarbons) |
| 01/23/2003 | US20030015479 Inductively coupled ballast circuit |
| 01/23/2003 | US20030015478 Used to monitor various functional and operational aspects of the electromagnetic radiation emitting assembly and a filter assembly used in the fluid treatment system. |
| 01/23/2003 | US20030015419 Portable device for electrochemical processing of liquids |
| 01/23/2003 | DE20215019U1 Water treatment appliance has honeycomb blocks of treatment material, forming channels in the flow direction, to give maximum water contact with a low flow resistance |
| 01/23/2003 | CA2453385A1 Method and device for decontaminating waters which are loaded with organic halogen compounds (halogenated hydrocarbons) |
| 01/22/2003 | EP1277705A1 Apparatus for purifying municipal or industrial wastewaters |
| 01/22/2003 | CN2532078Y desk type active water purifier |
| 01/22/2003 | CN2532077Y Combined waste water purifier |
| 01/22/2003 | CN1392865A Method and apparatus for clarification of water |
| 01/22/2003 | CN1392220A Cleaning oil and gas well, pipeline, sleeve, stratum and equipment composition and its using method |
| 01/22/2003 | CN1099385C Group type integrated water purifying equipment |
| 01/18/2003 | CA2353216A1 Containerized polluted-water treatment apparatus |
| 01/16/2003 | US20030012714 Continuous pressure on the reagent bed causes the bed to compact as it erodes when purified water is passed through the housing; ensures complete and even dissolution of the reagents. |
| 01/16/2003 | US20030010695 Point-of-use water treatment system |
| 01/16/2003 | US20030010694 Multi-stage filter |
| 01/16/2003 | US20030010639 Device and process for electrodialysis of ultrafiltration premeate of electrocoat paint |
| 01/15/2003 | EP1275427A2 Multi-stage filter |
| 01/15/2003 | EP1274655A1 Method for treating and upgrading effluents containing metallic sulphates using an ammonia addition step |
| 01/15/2003 | EP1206413B1 System and method for treating water circulating in open-circuit cooling systems |
| 01/15/2003 | EP1173387B1 Method and reactor for disinfecting and purifying liquids and gases |
| 01/15/2003 | EP1102621B1 Method for reducing scaling in electrodeionization systems |
| 01/15/2003 | EP1025050B1 Biodegradable complexing agents for heavy metals |
| 01/15/2003 | CN2530952Y Bathing water mineralizing circulating using system device |
| 01/15/2003 | CN2530951Y Integral membrane water purifier |
| 01/15/2003 | CN2530584Y Full-automatic multi-functional rare-earth ion dish-washing machine |
| 01/14/2003 | US6506311 Method and apparatus for processing wet material |
| 01/14/2003 | CA2298122C Water and wastewater treatment system and process for contaminant removal |
| 01/09/2003 | WO2002012125A3 Thermal water treatment |
| 01/09/2003 | US20030006180 Point-of-use water treatment system |
| 01/09/2003 | US20030006144 Electrolysis cell for generating chlorine dioxide |
| 01/08/2003 | EP1273334A2 Improved composite filter element |
| 01/08/2003 | EP1272434A1 Method and device for producing ultrapure water |
| 01/08/2003 | CN1389631A Water-treatment supplying device using life sewage |
| 01/08/2003 | CN1098217C Apparatus and method for treatment of waste water and/or exhaust gases containing fluorine and surface active agents |
| 01/07/2003 | US6503401 Effluent purifying system |
| 01/03/2003 | WO2003000956A1 Portable device for electrochemical processing of liquids |
| 01/03/2003 | WO2003000601A1 System for purifying waste water originating from olive processing by means of aeration, neutralisation, active carbon filtration and ozonisation |
| 01/03/2003 | WO2003000600A1 System for purifying waste water originating from dumps (leachates) by means of alkalinisation and ozonisation |
| 01/03/2003 | WO2003000595A2 Electrolysis cell for generating chlorine dioxide |
| 01/03/2003 | CA2451689A1 Electrolysis cell for generating chlorine dioxide |
| 01/02/2003 | US20030001112 Hermetically sealed ultraviolet light source |
| 01/02/2003 | US20030000966 Method and apparatus for disinfecting a water cooler reservoir and its dispensing spigot(s) |
| 01/02/2003 | US20030000884 Composite filter element |
| 01/02/2003 | US20030000881 Anti-cheating device for water filter |
| 01/02/2003 | US20030000880 Point-of-use water treatment system |
| 01/02/2003 | US20030000879 Point-of-use water treatment system |
| 01/02/2003 | US20030000878 Point-of-use water treatment system |
| 01/02/2003 | EP1268350A1 Water purification system and method |
| 01/02/2003 | EP1268095A1 Method for depollution of soils polluted by hydrocarbons |
| 01/02/2003 | DE20200697U1 Waste water treatment basin has two electrode grids repelling charged particles in suspension |
| 01/01/2003 | CN1388076A Community water supply system separated according to water quality |
| 01/01/2003 | CN1388037A Communication tool system and method for providing communication function |
| 01/01/2003 | CN1097566C Method for treating waste gases and sewage |
| 01/01/2003 | CN1097565C Method of treating city waste water |
| 01/01/2003 | CN1097564C Apparatus for purifying high density organic sewage and process thereof |
| 12/31/2002 | US6500333 System and process for treating waste water |
| 12/27/2002 | WO2002102723A1 Method and apparatus for the treatment of water |
| 12/27/2002 | WO2002102722A1 Medical grade water production system |
| 12/27/2002 | WO2002102706A1 Method and apparatus for disinfecting a refrigerated water cooler reservoir |
| 12/27/2002 | WO2002102181A1 Reclosable fastener assembly with slider closed position indicator |
| 12/26/2002 | US20020195467 Display module for water cooler |
| 12/26/2002 | US20020195398 Filtering, mixing with additives to adjust pH, pressurization through gasification to dissolve gas into liquid via hydrocyclone, removing bubbles, depressurization, then stratification/flocculation; pollution control |
| 12/25/2002 | CN1387497A Process for purification of industrial waste water from propylene oxide production process |
| 12/24/2002 | WO2004013051A1 System and method for removing contaminants from liquid |
| 12/19/2002 | WO2002100781A1 Plant and method for purification of water coming from a seulphuration kerosene plant |
| 12/19/2002 | WO2002100780A1 Portable water purifier |
| 12/19/2002 | WO2002028781A8 Apparatus and process for extracting and recovering metals from aqueous solutions |
| 12/19/2002 | US20020192774 Method for processing lignocellulosic material |
| 12/19/2002 | US20020189998 Processes and apparatus for potable water purification that include bio-filtration, and treated water from such processes and apparatus |
| 12/19/2002 | US20020189996 Method of treating waste water |
| 12/19/2002 | US20020189986 Point-of-use water treatment system |
| 12/19/2002 | US20020189951 Electrodeionization apparatus and method |
| 12/18/2002 | EP1265819A1 Method and device for effluent treatment |
| 12/18/2002 | CN1385382A Sewage treating and recovering device for washing machine |
| 12/18/2002 | CN1385381A Ozone and ultraviolet ray combined water sterilizing technology |
| 12/18/2002 | CN1385380A Method for treating acrylonitrile and acrylic waste water |
| 12/18/2002 | CN1385374A Method for separating dirt from sewage and separator thereof |
| 12/17/2002 | US6495052 System and method for treatment of water |
| 12/17/2002 | US6495049 System comprising devices for measuring temperature of water in housing and for measuring temperature of gases discharged from housing, and control system which opens valve and releases treated water when selected temperatures are reached |
| 12/17/2002 | US6495048 Feeding stream into electrochemical cell wherein electricity passes through and coaggulates the stream, then passing the mixed liquid into flotation cell |
| 12/12/2002 | WO2002098804A1 System for the production of ultra-pure laboratory-grade water |
| 12/12/2002 | US20020185448 Process and system for treatment of aqueous environments containing water soluble polymers |
| 12/12/2002 | US20020185447 Production of products from sewer sludge |
| 12/12/2002 | US20020185446 Method and apparatus for removing dissolved metals from wastewater by electrocoagulation |
| 12/12/2002 | US20020185438 Such as overflow sewage or oil-contaminated water; includes an inflow pipe connected to the receiving means of the vertical membrane storage system, an inflow overflow valve within the pipe and an outflow pipe with valve |
| 12/12/2002 | US20020185426 Environmental flexible remediation system |
| 12/12/2002 | US20020185423 Device and method for generating and applying ozonated water |
| 12/12/2002 | US20020185419 System and method for controlling microorganisms and biofilms |
| 12/12/2002 | US20020185417 Apparatus for the treatment of domestic water |
| 12/12/2002 | US20020185382 Method for electrochemical treatment of effluents, especially effluents from leather tanneries, comprising chromium salts |
| 12/11/2002 | EP1264818A1 A method for treating an effluent containing sorbic acid and/or a salt thereof and an effluent disposal device |
| 12/11/2002 | CN1384070A Drinking water with trace elements and its production process |
| 12/11/2002 | CN1384069A Method of treating naphthalene-blowing effluence and recovering resource in 2-naphthol producing process |
| 12/11/2002 | CN1384062A Water treating apparatus |
| 12/10/2002 | US6491879 Ozone generator |