| Patents for C02F 9 - Multistep treatment of water, waste water or sewage (41,429) |
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| 01/17/1987 | CN85102252A Method and apparatus for the treatment of fur making wastewater |
| 01/17/1987 | CN85101483A Improvement of water purification system |
| 01/17/1987 | CN85101146A Process for treatment waste solution containing ammonium ions and fluorine ions |
| 01/15/1987 | WO1987000072A1 Method for recovery of cyanide from waste streams |
| 01/15/1987 | DE3523541A1 Process for working up hydrolysed residues arising in the preparation of organochlorosilanes |
| 01/14/1987 | CN85104999A Method of processing an iron-containing dust obtained in the preparation of iron of steel |
| 01/13/1987 | US4636317 Recycling of metalworking fluids |
| 01/07/1987 | EP0207804A2 The management of water in recirculatory water systems |
| 01/07/1987 | EP0207390A1 Process for the recovery of amine and metal compounds in the preparation of polyphenylene ether |
| 01/07/1987 | EP0207387A1 Process for the recovery of amine compounds in the preparation of polyphenylene ether |
| 01/02/1987 | DE3522466A1 Process for the recovery of the amine and metal components in the synthesis of polyphenylene ethers |
| 12/30/1986 | US4632766 Oxidation |
| 12/30/1986 | US4632764 Sludge dewatering process using multiple layer plate |
| 12/30/1986 | EP0205778A1 Sulphite pulping process for preparing cellulose pulp from lignocellulosic materials with recovery of the pulping chemicals |
| 12/23/1986 | US4631133 Waste treatment device and method using microwaves |
| 12/16/1986 | US4629570 Removal of iron from chelant solutions |
| 12/09/1986 | US4627921 Treatment of water to lower the oxygen and the total organic carbon within the same |
| 12/03/1986 | EP0203549A2 Waste water treatment process |
| 12/03/1986 | EP0203467A1 Process and plant for the treatment of oily emulsions |
| 12/03/1986 | CN85104351A Treatment of sewages from printing and dyeing plant |
| 12/02/1986 | US4626357 Waste water control method and means |
| 12/02/1986 | US4626345 Flocculation, floatation, and filtration; for drinking |
| 11/26/1986 | EP0202839A2 Improvements in and relating to water dispensers |
| 11/26/1986 | EP0202567A2 Process for the preparation of black iron-based pigments |
| 11/26/1986 | EP0202387A2 Integrated biological adsorption process for treating wastewater |
| 11/26/1986 | EP0202382A2 Process for the decolourization of pulp mill process streams |
| 11/25/1986 | US4624790 Reduction of metal content of treated effluents |
| 11/25/1986 | CA1214580A1 Apparatus and method for copper recovery |
| 11/19/1986 | CN85108743A Process for the decolorization |
| 11/18/1986 | US4623457 Water purifier |
| 11/11/1986 | US4622149 Effluent treatment |
| 11/11/1986 | US4622133 Water-deionizing system |
| 11/06/1986 | EP0159349A4 Processes for treating waste streams. |
| 10/21/1986 | US4618709 Waste water treatment in the production of methacrylic acid |
| 10/14/1986 | US4617123 Processes and installations for treating waste waters issuing from the manufacture of sauerkraut |
| 10/09/1986 | WO1986005822A1 Method of deposition of uniform, substrate-independent metal layers on solid and liquid material surfaces, and/or metal depletion of solutions |
| 10/08/1986 | CN85102554A Method and apparatus improvement for treatment pickles produced waste water |
| 10/07/1986 | US4615873 Precipitation of zinc, cadmium, mercury, cobalt, nickel, lead or zinc ferrocyanide |
| 10/07/1986 | US4615799 Household potable water |
| 10/07/1986 | CA1212240A1 Process for removal and recovery of mercury from waste water |
| 10/01/1986 | EP0195877A1 Process for depositing a uniform metal hydroxide layer on substrates and for extracting metals in solution |
| 09/24/1986 | EP0195297A2 Process and apparatus to close recirculation circuits in water and waste water purification |
| 09/24/1986 | CN85102583A Treatment method and technology for treating sewage from dyeing and printing industry |
| 09/17/1986 | EP0194290A1 Waste treatment method and device. |
| 09/16/1986 | US4612124 Method of sewage treatment |
| 09/16/1986 | US4612115 Floating bed reactor |
| 09/10/1986 | EP0193565A1 Apparatus for clarification of water. |
| 09/09/1986 | US4610790 Process and system for producing sterile water and sterile aqueous solutions |
| 09/03/1986 | CN86100771A Process and equipment for the recovery and utilization of paper machine drainage |
| 09/02/1986 | US4609469 Waste water treatment |
| 09/02/1986 | CA1210705A1 Method and equipment for the clarification of water |
| 08/28/1986 | WO1986004888A1 A method of removing macromolecular organic dissolved and colloidal material from wood processing industry effluents |
| 08/26/1986 | US4608177 Effluent precipitation and neutralization chamber |
| 08/19/1986 | US4606829 Multistage process of adding iron to acidic medium, precipitating in alkaline medium |
| 08/14/1986 | WO1986004585A1 Process and system for the flocculation substances which can be flocculated in suspensions, especially for cleaning the discharge water of deinking plant |
| 08/13/1986 | EP0190975A1 Process and installation for treating waste water |
| 08/13/1986 | EP0190739A2 Water-Deionizing system |
| 08/13/1986 | EP0190478A1 Method of reducing the nickel content in waste water |
| 08/05/1986 | US4604220 Alpha olefin sulfonates as conveyor lubricants |
| 08/05/1986 | US4604214 Removal of nitrocresols from dinitrotoluene waste streams using fentons reagent |
| 07/30/1986 | CN85202067U Combination water purifying equipment with fluidics-labyrinth and sloping cam plate |
| 07/22/1986 | US4601832 Method of processing waste materials, particularly sludge containing noxious metals |
| 07/08/1986 | US4599177 Reduction, stripping metal vapor |
| 07/08/1986 | US4599166 Household appliance |
| 07/02/1986 | EP0185831A1 Plant for continuously cleaning soil to remove pollutants |
| 07/02/1986 | CN85106124A Treatment of waste water from milk factory |
| 07/01/1986 | US4597875 Treating with alicali separation and recycling of wash water |
| 06/17/1986 | US4595498 Purification, ion exchanging, oxidation, degassing |
| 06/10/1986 | US4594154 Battery powered for isolated areas |
| 06/05/1986 | WO1986003236A1 Method of removing lignin from bleach plant effluents |
| 04/29/1986 | US4585561 Cationic polyelectrolyte |
| 04/23/1986 | EP0179045A2 Plant for waste disposal |
| 04/09/1986 | EP0176963A2 Process and apparatus for the separation of a complexly composed load from liquid wastes such as industrial waste waters and sanitary landfill leachates |
| 04/08/1986 | US4581144 Method for treatment of impounded material (sludges) from the chemical treatment of spent sulfuric acid with lime |
| 04/08/1986 | US4581136 Recovering usable sludge, fibers for fuel; pollution control |
| 04/08/1986 | CA1203029A1 Treatment of solutions to facilitate the removal of ferric iron therefrom |
| 04/08/1986 | CA1203028A1 Process for the treatment of organic fall-out products |
| 03/27/1986 | WO1986001793A1 Waste treatment method and device |
| 03/25/1986 | US4578187 Bacteriostatic material, replaceable cartridge |
| 03/25/1986 | US4577999 Process for storing liquid waste in salt cavities |
| 03/25/1986 | CA1202188A1 Process for storing liquid waste in salt deposits |
| 03/13/1986 | WO1986001427A1 Apparatus for clarification of water |
| 03/12/1986 | EP0174051A2 Method for treatment of impunded material (sludges) from the chemical treatment of spent sulfuric acid with lime |
| 03/11/1986 | CA1201726A1 Process for the removal of urea, ammonia and carbon dioxide from dilute aqueous solutions |
| 03/10/1986 | CN85102714A Method of treating electroplating waste water by serous cellulose xanthate |
| 03/04/1986 | CA1201422A1 Process for the recovery of aluminum and iron salts from acidic waste waters |
| 02/26/1986 | CN85200694U Water purifying system |
| 02/25/1986 | US4572786 Polluted fresh or sea water; flocculation, separation tanks; compact |
| 02/25/1986 | US4571953 Combined refrigerator and water filtration unit |
| 02/25/1986 | CA1201035A1 Method and receptor tank for septic tank draining |
| 02/04/1986 | US4568463 Method and apparatus for the purification of water and other aqueous liquids |
| 01/28/1986 | US4566975 Method for purifying aqueous solutions |
| 01/22/1986 | EP0168752A2 Method of treating liquid wastes containing heavy metal chelate compounds |
| 01/21/1986 | US4565633 Removal of dissolved heavy metals from aqueous waste effluents |
| 01/21/1986 | US4565248 Method for producing water soluble resols and use therefor |
| 12/27/1985 | EP0165883A1 Mobile water and sludge treatment unit |
| 12/27/1985 | EP0165328A1 Large-scale waste water treatment plant |
| 12/24/1985 | US4560546 Chromium hydroxide precipitate obtained by a continuous process for the removal of chromium from waste waters |
| 12/18/1985 | EP0164402A1 Recovery of organic acids, catalysts and water from terephthalic acid manufacture. |
| 12/17/1985 | US4559146 Coagulation of solids; recirculation of clarified product; aeration |