| Patents for C02F 9 - Multistep treatment of water, waste water or sewage (41,429) |
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| 12/14/2004 | US6830696 Treatment of spent pulping liquor with lignin separation to recover alkali pulping chemicals in manufacture of paper pulp |
| 12/14/2004 | US6830688 Nonchemical waste water treatment |
| 12/09/2004 | WO2004106240A1 Method of treating organic waste water and organic sludge and treatment equipment therefor |
| 12/09/2004 | WO2004106233A2 A process for recovering phosphorus from phosphorous production sludge |
| 12/09/2004 | WO2004105916A1 Water treatment devices and cartridges therefor |
| 12/09/2004 | WO2004087282A3 Grease removal system |
| 12/09/2004 | US20040248268 Extracting metals and minerals from solution using sea sponges or transgenic eukaryotic aquatic organism; biofilters |
| 12/09/2004 | US20040245184 First filter immersed in a fluid containing objects of removal; a second filter formed of a gel film adsorbed onto the surface of the first filter; and a pair of electrodes for electrochemically removing nitrogen compounds contained in CMP wastewater |
| 12/09/2004 | US20040245180 Outlet of the STS is directly connected to the inlet of the flocculation and flotation treatment plant on the stream bed of the water body or next to and interconnected to by an induced flow canal. |
| 12/08/2004 | EP1483209A1 Water purification apparatus |
| 12/08/2004 | EP1483208A1 Water filter and treatment system and component |
| 12/08/2004 | EP1483204A1 Preparation of waste water containing sodium chloride for use in chlor-alkali electrolysis |
| 12/08/2004 | EP1035874A4 Water sterilization system incorporating ultrasonic device |
| 12/08/2004 | CN2661683Y Oil field recovered water treatment device by internal electrolysis reaction |
| 12/08/2004 | CN1552644A Small-town sewage treating process |
| 12/08/2004 | CN1552643A Desalination process for high recovery ratio seawater (brackish water) |
| 12/08/2004 | CN1552639A Method for comprehensive treating waste emulsion liquid and chromium containing waste water by metallurgy chemical industry technology |
| 12/08/2004 | CN1552638A Ammonia chloride waste water zero release treating process |
| 12/08/2004 | CN1178868C Sewage treating device |
| 12/08/2004 | CN1178865C Water purification process |
| 12/07/2004 | US6827857 Control valve and water purification method |
| 12/02/2004 | WO2004103918A1 Desalination of aqueous feedstocks |
| 12/02/2004 | WO2004103917A1 Water treatment method and apparatus using pretreatment and membranes |
| 12/02/2004 | WO2004103916A1 Systems for the removal of solids from fluids and methods of using the same |
| 12/02/2004 | US20040241073 A process for total environmental remediation of a phosphorus contaminated site |
| 12/02/2004 | US20040238433 Filter assemblies with compressible filtering medium |
| 12/02/2004 | CA2526340A1 Water treatment method and apparatus using pretreatment and membranes |
| 12/01/2004 | EP1481948A2 Coupling of a sewer treatment station -STS-to a treatment plant for the flocculation and flotation of water streams |
| 12/01/2004 | EP1480913A1 Nitrate removal |
| 12/01/2004 | CN1177770C Fast swill treating method and treater |
| 12/01/2004 | CN1177766C Device and method for treating water with ozone generated by water electrolysis |
| 11/30/2004 | US6825620 Inductively coupled ballast circuit |
| 11/30/2004 | US6824695 System and method for water purification |
| 11/30/2004 | US6824662 Electrodeionization apparatus and method |
| 11/25/2004 | WO2004085316A3 Two phase anaerobic organic matter treatment and system |
| 11/25/2004 | WO2004083125A3 Method and hybrid reactor for processing residual wastes |
| 11/25/2004 | WO2003072220A8 Quick change filter and bracket system with key system and universal key option |
| 11/25/2004 | US20040235248 Fabrication method of semiconductor integrated circuit device |
| 11/25/2004 | US20040232845 Inductive coil assembly |
| 11/25/2004 | US20040232065 Water treatment devices and cartridges therefor |
| 11/25/2004 | US20040231345 Use of flow through capacitor in the recovery and purification of water from exhaust gases of internal combustion engines |
| 11/24/2004 | EP1478891A1 Portable, potable water recovery and dispensing apparatus |
| 11/24/2004 | CN1548889A Water purifier for refrigerator and refrigerator utilizing the water purifier |
| 11/24/2004 | CN1548392A Membrane biological treatment process of eliminating virus from water |
| 11/24/2004 | CN1548391A Lixiviation type film separating system for sewage and waste water high treatment |
| 11/24/2004 | CN1548390A Aerobic post-treatment process of anaerobic digested effluent |
| 11/24/2004 | CN1548389A Household intermediate water processing machine |
| 11/24/2004 | CN1176864C Method for treating sewage by DSD acid reduction acid bleeding |
| 11/24/2004 | CN1176863C Method for reusing ammonia nitrogen containing effluent as circular cooling water |
| 11/23/2004 | US6821438 Apparatus and method for increasing oxygen levels in a liquid |
| 11/23/2004 | US6821435 Water purifying system |
| 11/23/2004 | US6821434 Introduces magnesium hydroxide adsorbent particles followed by softening procedure |
| 11/23/2004 | US6821414 Water treatment apparatus |
| 11/23/2004 | CA2350697C Apparatus for treating gas containing substance to be decomposed and method of treating its gas |
| 11/18/2004 | WO2004099093A1 Recycled irrigation water treatment system |
| 11/18/2004 | WO2004099088A1 Equipment for producing ultrapure water |
| 11/18/2004 | US20040226881 Method of treating photographic waste liquid |
| 11/18/2004 | DE202004010572U1 Water dispenser comprises electrolysis unit mounted between mains or bottled water supply and tap which consists of one or two electrolysis cells, reaction chamber and catalysis chamber |
| 11/18/2004 | CA2523937A1 Method, system and apparatus for removing impurities from wine |
| 11/17/2004 | EP1477458A2 Method of treating photographic waste liquid |
| 11/17/2004 | EP1477045A2 Starter assembly for a gas discharge lamp |
| 11/17/2004 | EP1476402A2 Processes for treating iron-containing waste streams |
| 11/17/2004 | EP1476239A1 Removable closure assembly for a water treatment system |
| 11/17/2004 | EP1423335A4 Water purification apparatus |
| 11/17/2004 | EP1392606B1 Method for purification of water coming from a desulphuration kerosene plant |
| 11/17/2004 | EP1248527B1 Beverage brewing system and method for using same |
| 11/17/2004 | CN2656402Y Integrated computer controlled mid-water processing facilities |
| 11/17/2004 | CN1546403A Regeneration cycle applied technique for waste water from polyvinyl chloride industry |
| 11/17/2004 | CN1546388A Replaceable lamp |
| 11/17/2004 | CN1545865A Water treatment method of circulating water fish culture in factory style |
| 11/17/2004 | CN1176035C Ozone/ultraviolet-biological activated carbon process for removing trace amount of organic matter in water |
| 11/17/2004 | CN1176034C Process and apparatus for treating percolate from urban landfill field |
| 11/17/2004 | CN1176033C Process for treating waste water for fumaric acid production |
| 11/17/2004 | CN1176032C Producing process and for electronic grade water by intergrated membrane process |
| 11/17/2004 | CN1176031C Waste water treatment process and treatment appts. |
| 11/17/2004 | CN1176030C Urban four water supply system |
| 11/16/2004 | US6818130 Method and apparatus for multistage liquid filtration |
| 11/16/2004 | US6818129 Ion exchange removal of metal ions from wastewater |
| 11/11/2004 | WO2004096718A1 Purification system |
| 11/11/2004 | WO2004096717A2 Method and apparatus for treating waste water |
| 11/11/2004 | WO2004096407A1 Flocculant for treating cleaning wastewater and cleaning wastewater treatment equipment |
| 11/11/2004 | US20040222751 Starter assembly for a gas discharge lamp |
| 11/11/2004 | US20040222165 packaging ozone sterilized water in plastic bags having an inner polyethylene liner which contacts the water and does not contain slip agents or other organic processing aids which may react with ozone; adverse organoleptic reactions or interactions are reduced or eliminated |
| 11/11/2004 | DE10317683A1 Assembly to give clean drinking water, e.g. from a well and the like, has a nano filtration stage where the concentrate passes through phosphate precipitation before discharge directly into a body of water |
| 11/10/2004 | EP1475354A1 Apparatus for and a method of treating organic waste |
| 11/10/2004 | CN1544365A Urban refuse sanitary landfill leachate disposing process |
| 11/10/2004 | CN1544364A Propulsive and batched type activated sludge reaction process and device |
| 11/10/2004 | CN1544363A Saponin waste water handling method |
| 11/10/2004 | CN1544362A Sewage treatment equipment |
| 11/10/2004 | CN1544361A Sewage processing device and method by active carbon concentration and separation and biological regeneration |
| 11/10/2004 | CN1544360A Multi-phase concentration, microwave synergy, catalytic oxidation method for degrading organic pollutant in water |
| 11/10/2004 | CN1544359A Bag-packed drinking water production method |
| 11/10/2004 | CN1544358A Sewage processing system for comprehensive hospital |
| 11/10/2004 | CN1544313A Bio-physiochemical method for preparing high purity elemental sulfur from sulfate waste water |
| 11/10/2004 | CN1174791C Method for removing removed substance from fluid |
| 11/09/2004 | US6814877 Method of producing at least one of chlorite, chlorine dioxide and chlorate by combining the reactions of ozonation and electrolytic chlorination |
| 11/09/2004 | US6814876 Versatile, modular, multi-stage water purification system |
| 11/09/2004 | US6814724 Water purification pack |
| 11/08/2004 | CA2465445A1 Flexible film packaging for use with ozone sterilization applications |
| 11/04/2004 | WO2004094677A1 Method for handling waste material generated in a metallurgical process |