| Patents for C02F 101 - Nature of the contaminant (7,129) |
|---|
| 04/06/1992 | CA2052655A1 Process for treating refinery slurries |
| 04/01/1992 | EP0477338A1 Process for the treatment of water containing sulphur compounds. |
| 03/17/1992 | US5096599 Process for purifying the effluent from urea production plants |
| 02/26/1992 | EP0471784A1 Method and composition for treating waste water. |
| 02/19/1992 | EP0318483B1 Method and apparatus for electrolytic treatment of liquids, especially waste water |
| 01/07/1992 | US5078894 Formulations for iron oxides dissolution |
| 11/14/1991 | WO1991017124A1 New formulations for iron oxides dissolution |
| 10/30/1991 | EP0454028A2 Waste treatment process for alkaline waste liquid |
| 10/13/1991 | WO1991016269A1 Process for the treatment of water containing sulphur compounds |
| 09/24/1991 | US5051191 Method to detoxify sewage sludge |
| 08/28/1991 | EP0193565B1 Apparatus for clarification of water |
| 08/13/1991 | US5039414 Process for separating and/or recovering hydrocarbon oils from water using biodegradable absorbent sponges |
| 08/08/1991 | WO1991011392A1 Method of cleaning soil water |
| 08/08/1991 | WO1991011243A1 Device for purifying sewage |
| 08/07/1991 | CN1053598A Method and solid material body for purification of fluids such as water, aqueous fluids and liquid fuels |
| 07/31/1991 | EP0438776A1 Preparation of insoluble tannin and its applications for waste treatment and adsorption processes |
| 07/30/1991 | CA2074840A1 Sewage purification apparatus |
| 07/30/1991 | CA2074829A1 Method for purifying sewage |
| 07/10/1991 | EP0435944A1 Water purifying system |
| 06/11/1991 | US5022974 Method and apparatus for electrolytic treatment of liquids, especially waste water |
| 05/29/1991 | EP0428868A2 Materials for removing suspended impurities |
| 05/15/1991 | CN1051336A Adsorbent for removing suspended impurities and use thereof |
| 05/07/1991 | US5013449 Process for solute recovery utilizing recycle liquids having a stored concentration profile |
| 03/27/1991 | CN1050171A Process for purifying effluent from urea production plants |
| 03/20/1991 | EP0417829A1 Process for purifying the effluent from urea production plants |
| 02/20/1991 | EP0413244A2 Process for separation and recycling of by-products from the wastewater of the synthesis of 5-amino-4-chloro-2-phenyl-3(2H)-pyridazinone |
| 02/09/1991 | WO1991001946A1 Process and device for treating, in particular cleaning, water containing halogenated ethylenes |
| 02/09/1991 | CA2066212A1 Process and device for treating, in particular cleaning, water containing halogenated ethylenes |
| 02/02/1991 | WO1991001945A1 Process for separating and/or recovering hydrocarbon oils from water using biodegradable absorbent sponges |
| 02/02/1991 | CA2037925A1 Process for separating and/or recovering hydrocarbon oils from water using biodegradable absorbent sponges |
| 01/24/1991 | WO1991000849A1 Process for treatment of water and apparatus therefor |
| 12/20/1990 | WO1990015778A1 Process and device for treating polluted fluids |
| 12/20/1990 | DE3919885A1 Verfahren und anlage zur behandlung von mit schadstoffen belasteten fluessigkeiten Liquids method and system for treatment of contaminated with pollutants |
| 12/12/1990 | EP0401884A2 Reactor for photooxidations in an aqueous environment |
| 11/28/1990 | EP0399809A1 Process for solute recovery utilizing recycle liquids having a stored concentration profile |
| 11/26/1990 | CA2017538A1 Process for solute recovery utilizing recycle liquids having a stored concentration profile |
| 11/13/1990 | CA1276325C Two-stage clarification process and device for liquids containing solids |
| 11/10/1990 | WO1990013519A1 Method and composition for treating waste water |
| 09/26/1990 | EP0388836A1 Composition for treating water or aqueous systems |
| 09/21/1990 | CA2012501A1 Composition for treating water or aqueous systems |
| 09/12/1990 | EP0386838A1 Method for reducing industrial or urban effluent COD |
| 09/10/1990 | CA2011869A1 Method for reducing industrial or urban effluent cod |
| 08/22/1990 | EP0383156A1 Process for eliminating phosphates and organically bound phosphorus from waste and feed waters |
| 06/27/1990 | EP0374458A2 High performance polymer flocculating agents |
| 04/05/1990 | WO1990003333A1 Water purifying system |
| 03/28/1990 | EP0360612A1 Water purifying system |
| 03/28/1990 | CN1040826A Transition metal recovery |
| 03/14/1990 | EP0167569B1 Deoxygenation process and apparatus |
| 02/28/1990 | EP0355837A2 Transition metal recovery |
| 01/11/1990 | WO1990000156A1 Method of extracting heavy metal ions from sewage |
| 12/27/1989 | EP0347808A1 Process for the treatment of sewage sludge |
| 09/05/1989 | CA1259142A1 Sludge bed clarification device for solid-containing liquids |
| 07/11/1989 | CA1257413A1 Apparatus for clarification of water |
| 06/07/1989 | EP0318483A1 Method and apparatus for electrolytic treatment of liquids, especially waste water. |
| 04/12/1989 | EP0283509A4 The control of biofouling in aqueous systems by non-polymeric quaternary ammonium polyhalides. |
| 01/26/1989 | DE3723422A1 Verfahren zur biologischen reinigung von abwaessern von methanol Process for the biological purification of waste waters from methanol |
| 01/10/1989 | CA1248645A1 Deoxygenation process and apparatus |
| 12/13/1988 | CA1246421A1 Method for the separation of oil-in-water emulsions |
| 10/19/1988 | CN87102633A Method for biological purification of sewage from diethanolamine |
| 09/28/1988 | EP0283509A1 The control of biofouling in aqueous systems by non-polymeric quaternary ammonium polyhalides. |
| 05/24/1988 | US4746443 Bentazon containing wastewater treatment |
| 05/24/1988 | US4746433 Biodegradation |
| 04/27/1988 | EP0193565A4 Apparatus for clarification of water. |
| 04/07/1988 | WO1988002351A1 The control of biofouling in aqueous systems by non-polymeric quaternary ammonium polyhalides |
| 12/01/1987 | US4710291 Two-stage apparatus for clarifying liquid charged with solid matter |
| 11/26/1987 | DE3716782A1 Process and apparatus for purifying waste waters containing organic substances, in particular for the effective removal of phosphorus and nitrogen |
| 08/11/1987 | US4686066 Method for the separation of oil-in-water emulsions |
| 05/13/1987 | CN86105063A Method and apparatus for use in separating solids from liquids |
| 04/10/1987 | EP0167569A4 Deoxygenation process and apparatus. |
| 03/11/1987 | EP0213509A2 Method and apparatus for use in separating solids from liquids |
| 03/03/1987 | US4647372 Sludge belt apparatus for clarifying liquid charged with solid matter |
| 12/02/1986 | US4626345 Flocculation, floatation, and filtration; for drinking |
| 09/10/1986 | EP0193565A1 Apparatus for clarification of water. |
| 07/02/1986 | EP0186029A2 Process for separating oil-in-water emulsions |
| 04/30/1986 | EP0179674A1 Apparatus and method for the two-stage clarification of solids loaden liquids |
| 04/02/1986 | EP0176380A1 Sludge blanket apparatus for clarifying solids-loaden liquid |
| 03/13/1986 | WO1986001427A1 Apparatus for clarification of water |
| 02/13/1986 | WO1986000879A1 Two-stage planification method and device for liquids laden with solid materials |
| 01/21/1986 | US4565627 Filters for uranium, gold or silver |
| 01/15/1986 | EP0167569A1 Deoxygenation process and apparatus. |
| 12/03/1985 | US4556492 Adding hydrazine to liquid; passing through activated carbon and then ion exchange resin |
| 08/29/1985 | WO1985003695A1 Process and plant for the anaerobic treatment of organic substrates |
| 08/28/1985 | EP0153299A1 Process and plant for the anaerobic treatment of organic substrates |
| 06/20/1985 | WO1985002605A1 Deoxygenation process and apparatus |
| 10/23/1984 | US4478802 Method for cleaning cyanide-bearing gas scrubbing waters produced in metallurgical industry |
| 10/16/1984 | CA1176034A1 Method of treating a liquid material leading to solid waste substances, by the action of a fluid phase and at least one gas phase |
| 05/08/1984 | US4447331 Atomizing wastes with reagents into helical flow |
| 01/31/1984 | CA1161579A1 Process for working up waste water containing phosphorus |
| 08/16/1983 | US4399037 Centrifugal filtration |
| 07/26/1983 | US4395546 Decoloring effluents |
| 12/07/1982 | CA1136830A1 Conversion of extraction residues originating from phosphoric acid decontamination to solid deposition products |
| 06/15/1982 | CA1125729A1 Regeneration of activated carbon |
| 05/25/1982 | CA1124417A1 Method for treating untreated and sewage waters |
| 04/21/1982 | EP0049762A1 Conditioning process for waste waters containing phosphorus |
| 03/31/1982 | EP0048664A1 Process for the treatment of a liquid resulting in solid wastes by the action of a fluid and at least one gas phase |
| 12/15/1981 | US4306080 Process for the purification of industrial effluents |
| 07/21/1981 | US4279876 Conversion of extraction residues originating from phosphoric acid decontamination to solid deposition products |
| 05/12/1981 | US4267069 Using an aqueous copper salt solution |
| 05/05/1981 | CA1100534A1 Treatment of hazardous waste |
| 03/03/1981 | CA1096978A1 Selective removal of iron cyanide anions from fluids containing thiocyanates |