| Patents for C02F 9 - Multistep treatment of water, waste water or sewage (41,429) |
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| 06/03/2004 | US20040104168 Irradiating coating material waste water with microwaves to decompose impurities; coagulation using flocculant or electrolysis; fluid flow to bath for anaerobic or aerobic processing |
| 06/03/2004 | US20040104157 Purified water supply system |
| 06/03/2004 | US20040104153 Portable water purifier |
| 06/03/2004 | US20040104107 Hydrofluoric acid wastewater treatment method and device |
| 06/03/2004 | DE10256500A1 Water softener, with electrodes in an alternating polarity, has a manual scraper to clear blockages and restore normal working on a time clock failure or incorrect programming |
| 06/03/2004 | DE10253256A1 Continuous treatment of contaminated water circulating in e.g. industrial floor washing systems comprises feeding it from settling tank through clarification tanks to wet oxidation stage and then recirculating |
| 06/02/2004 | EP1424311A1 Method of multi-stage reverse osmosis treatment |
| 06/02/2004 | EP1423340A1 A method of biologically purifying waste water and a plant preferably a mini purification plant to be used by the method |
| 06/02/2004 | EP1423335A1 Water purification apparatus |
| 06/02/2004 | CN2618919Y Purifier for drinking water |
| 06/02/2004 | CN1501891A Device and method for generating and applying ozonated water |
| 06/02/2004 | CN1500750A Treatment process for monosodium glutamate waste water |
| 06/02/2004 | CN1151985C Highly efficient micro-power consumption domestic sewage treater |
| 06/02/2004 | CN1151984C Bow shape penetrating flow type separator and bow shape penetrating flow type film biological reactor |
| 06/02/2004 | CN1151983C Integral type film biological reactor |
| 06/02/2004 | CN1151980C Water treatment apparatus |
| 06/02/2004 | CN1151862C Method and apparatus for high efficiency reverse osmosis operation |
| 06/01/2004 | US6743361 Method for bacterially treating tank toilet systems and apparatus for using same |
| 06/01/2004 | CA2114436C Dewatering of aqueous suspensions |
| 05/27/2004 | WO2004043864A2 Extraction methodology for suspended and dissolved material from fruit and vegetable wastewater |
| 05/27/2004 | US20040099608 Ballast water treatment system |
| 05/27/2004 | US20040099607 Wastewater treatment system |
| 05/27/2004 | US20040099600 Separation of boron compounds using reverse osmosis, adsorption |
| 05/27/2004 | US20040099599 Applying pulsed electrical signals; conditioning, stabilization, thickening, dehydration |
| 05/27/2004 | DE19810976B4 Verfahren und Vorrichtung zum Reinigen von industriellem Abwasser aus Druckereien Method and apparatus for cleaning of industrial waste water from printing |
| 05/26/2004 | EP1421034A2 Method for biologically treating waste water containing dye from the textile and leather industry |
| 05/26/2004 | EP1228003B1 On premise water treatment system with temperature control water release and method |
| 05/26/2004 | EP1121187B1 Fluid filtration unit |
| 05/26/2004 | CN1500066A 臭氧发生器 Ozone generator |
| 05/26/2004 | CN1498867A Method for purifying wasteslag fluid from wine industry |
| 05/26/2004 | CN1151076C Water treatment apparauts |
| 05/26/2004 | CN1151073C Method for purifying ferrous salt solution |
| 05/25/2004 | US6740235 Swivelling filter head assembly |
| 05/21/2004 | WO2004041725A2 Method and system for purification and disinfection of water |
| 05/21/2004 | WO2004041294A1 Process for producing water capable of lowering blood sugar level |
| 05/21/2004 | WO2004007050A3 Device and system for filtering effluents for horticulture or market gardening |
| 05/20/2004 | US20040094490 Method and apparatus for recycling wash chemicals used in powder coating |
| 05/20/2004 | US20040094483 Apparatus for recycling of oil based drilling fluid contaminated with water and water contaminated with oil based drilling fluid |
| 05/19/2004 | EP1419113A1 Filter assemblies with compressible filtering medium |
| 05/19/2004 | EP1419110A2 Water filters and processes for using the same |
| 05/19/2004 | EP1419109A1 Processes for manufacturing water filters |
| 05/19/2004 | CN2616532Y Integrated washing-water reuse machine |
| 05/18/2004 | US6736966 Electrolytic cell for generating at least one oxidant, electrolyte reservoir, power source, activator for activating power source |
| 05/18/2004 | CA2078459C Residual water biological purification process and device |
| 05/13/2004 | WO2004028986A3 Membrane bioreactor waste water treatment method |
| 05/13/2004 | WO2004009495A3 Portable compact ultra high purity water system via direct processing from city feed water |
| 05/13/2004 | US20040089612 Salt formation of ammonium sulfate and precipitation of metal oxyhydroxide; basification; adding calcium hydroxide to form hydrated calcium sulfate; washing |
| 05/13/2004 | US20040089551 Ion-depletion compartment; ion exchange resin; water purification |
| 05/13/2004 | DE19937989B4 Mobile Entsorgungsanlage Mobile disposal facility |
| 05/12/2004 | CN1495131A Coating waste water treatment method |
| 05/11/2004 | US6734326 Method of treating aqueous effluents containing peroxidized compounds |
| 05/11/2004 | US6733661 Ultrapure water producing apparatus |
| 05/11/2004 | US6733646 Method and apparatus for electrodeionization of water |
| 05/11/2004 | US6733636 Water treatment method for heavy oil production |
| 05/11/2004 | CA2379072C Combined oxidation and chelating adsorption system for removal of mercury from water |
| 05/06/2004 | WO2003063774A3 Method of treating contaminants in an in situ environment |
| 05/06/2004 | US20040084382 Continuous mixing and aeration of water with air and ozone-air mixture; aeration; filtration of water from coagulated particles; treating with electric discharge; detoxification, deodorizing, decoloring |
| 05/06/2004 | US20040084377 Method and apparatus for regenerating fire resistant hydraulic fluid containing water-glycol |
| 05/06/2004 | EP1414752A2 Water treatment compositions |
| 05/06/2004 | EP1414736A1 Method and apparatus for disinfecting a refrigerated water cooler reservoir |
| 05/06/2004 | DE10348732A1 Water treatment, especially for treating waste water, comprises adding a solution containing a microbiotic mixed culture to water in a catalytically active environment |
| 05/05/2004 | CN1493534A Hospital sewage fully enclosed treatment technology and integrated equipment |
| 05/05/2004 | CN1493533A Yellow ginger acid spliting waste water resource utilization technique |
| 05/04/2004 | US6731071 Inductively powered lamp assembly |
| 04/29/2004 | WO2004035491A1 Procedure and device for thermophilic temperature range stabilization and mineralization of sludge from wastewater treatment plants |
| 04/29/2004 | WO2004035489A1 Method and apparatus for water treatment |
| 04/29/2004 | WO2004035480A1 Construction and method for batchwise separation of suspended matter from water |
| 04/29/2004 | WO2004035479A1 Method and apparatus for high efficiency evaporation operation |
| 04/29/2004 | WO2004035478A2 Water purification by means of catalytic surfaces and microorganisms |
| 04/29/2004 | WO2004035192A1 Process for mixing treatment additives to contaminated liquids |
| 04/29/2004 | WO2004035186A1 Process for dissolving gas into a liquid |
| 04/29/2004 | WO2004035171A1 Process for removing an undesirable dissolved gas from a liquid |
| 04/29/2004 | WO2004020343A3 Pool filter with a pre-filtering unit |
| 04/29/2004 | CA2799710A1 Method and apparatus for high efficiency evaporation operation |
| 04/29/2004 | CA2502223A1 Water purification by means of catalytic surfaces and microorganisms |
| 04/28/2004 | EP1244601A4 Waste treatment process |
| 04/28/2004 | CN1491909A Ultrosonic wave concerted biological adsorption water treating method |
| 04/28/2004 | CN1147440C Treatment method of high concentration organic wastewater using biological culture equipment |
| 04/28/2004 | CN1147439C Biochemical process for treating sewage with microbes |
| 04/28/2004 | CN1147438C Ferric-optical catalyst oxidizing process for removing microcapsule phycohepatotoxin from water |
| 04/28/2004 | CN1147437C Method for treating waste water in dinaphthyl phenol production |
| 04/28/2004 | CN1147436C Intermittent automatic process and equipment for treating waste water |
| 04/27/2004 | US6726846 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 |
| 04/27/2004 | US6726839 Point-of-use water treatment system |
| 04/27/2004 | CA2308524C Water treatment device with volumetric and time monitoring features |
| 04/22/2004 | WO2004033376A1 Method and apparatus for liquid purification |
| 04/22/2004 | WO2004033373A2 Mobile desalination plants and methods for producing desalinated water |
| 04/22/2004 | WO2004032981A1 Apparatus for automatically supplying water in dental water tank |
| 04/22/2004 | US20040074850 Integrated energy recovery system |
| 04/22/2004 | CA2501414A1 Mobile desalination plants and systems, and methods for producing desalinated water |
| 04/21/2004 | EP1409417A1 Method and device for disinfecting water |
| 04/21/2004 | EP1409416A1 Buoyant electrolysis device for treating a reservoir of water |
| 04/21/2004 | EP1409415A2 Method and device for electrochemically disinfecting fluids |
| 04/21/2004 | EP1409108A1 Hollow fiber contactor systems for removal of lipids from fluids |
| 04/21/2004 | EP1216209A4 An iron powder and sand filtration process for treatment of water contaminated with heavy metals and organic compounds |
| 04/21/2004 | EP1080041A4 Use of polymer dispersions for paper mill color removal |
| 04/21/2004 | CN1491190A Method and plant for thickening sludge derived from water treatment by flocculation-decantation with ballasted floc |
| 04/21/2004 | CN1491189A Effective electrolysis device for generating oxidant in solution |
| 04/21/2004 | CN1490264A Multistage refuse percolate drastic biochemical and physio-chemical treating technology |
| 04/21/2004 | CN1490263A Water treating technology by reinforced membrane biological reactor |