| Patents for C02F 103 - Nature of the water, waste water, sewage or sludge to be treated (11,124) |
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| 07/11/1990 | EP0377356A1 Biological filter for the production of potable water, and related controlling process |
| 05/23/1990 | CN1008099B Process for preparation of thermoplastic mass |
| 04/18/1990 | EP0363838A2 Method and apparatus for obtaining pure water and products dissolved in water |
| 04/11/1990 | EP0362233A1 Process for separating the substances contained in a liquid and device for implementing the process |
| 04/08/1990 | CA2000230A1 Process and apparatus for purifying water and recovering substances dissolved in water |
| 04/05/1990 | WO1990003333A1 Water purifying system |
| 03/28/1990 | EP0360612A1 Water purifying system |
| 03/28/1990 | CN1040826A Transition metal recovery |
| 03/21/1990 | EP0359025A1 Process for the mesophilic or thermophilic aerobic-enzymatic conditioning of organic substances and biomasses |
| 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 |
| 07/18/1989 | CA1257717A1 Anaerobic purification equipment for waste water |
| 07/11/1989 | CA1257413A1 Apparatus for clarification of water |
| 04/12/1989 | EP0283509A4 The control of biofouling in aqueous systems by non-polymeric quaternary ammonium polyhalides. |
| 01/17/1989 | US4798869 Polymers/shell-core/, high impact, transparent |
| 01/10/1989 | CA1248645A1 Deoxygenation process and apparatus |
| 12/13/1988 | CA1246421A1 Method for the separation of oil-in-water emulsions |
| 12/01/1988 | WO1988009210A1 Process for separating the substances contained in a liquid and device for implementing the process |
| 11/23/1988 | EP0292470A1 Process for separating substances from liquids and apparatus for carrying out the process |
| 09/28/1988 | EP0283509A1 The control of biofouling in aqueous systems by non-polymeric quaternary ammonium polyhalides. |
| 08/30/1988 | US4767527 Apparatus for waste water purification |
| 08/23/1988 | US4765901 Oxidation of phenolec compounds before anaerobic treatment |
| 07/27/1988 | EP0275538A2 Method and apparatus for biological purification of wastewater with no excess activated sludge |
| 05/24/1988 | US4746443 Bentazon containing wastewater treatment |
| 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 |
| 12/16/1987 | EP0249004A2 Process and apparatus for the production of a substrate having an energizing active charge |
| 12/01/1987 | US4710291 Two-stage apparatus for clarifying liquid charged with solid matter |
| 09/23/1987 | EP0238148A1 Method for purifying waste water |
| 08/18/1987 | CA1225611A1 Process and apparatus for waste water purification |
| 08/11/1987 | US4686066 Method for the separation of oil-in-water emulsions |
| 06/17/1987 | CN86107600A Process for preparation of thermoplastic mass |
| 05/20/1987 | EP0222127A2 Preparation of thermoplastic blends |
| 05/13/1987 | CN86105063A Method and apparatus for use in separating solids from liquids |
| 04/22/1987 | CN86105091A Method and apparatus for use in separating solids from liquids |
| 04/10/1987 | EP0167569A4 Deoxygenation process and apparatus. |
| 03/31/1987 | CA1219813A1 Evacuation and de-aeration process and device for sludges in an etching bath |
| 03/11/1987 | EP0213509A2 Method and apparatus for use in separating solids from liquids |
| 03/11/1987 | EP0213508A2 Method and apparatus for use in separating solids from liquids |
| 03/03/1987 | US4647372 Sludge belt apparatus for clarifying liquid charged with solid matter |
| 02/17/1987 | US4643832 Entrainment of waste water in gas flow, heating, separation, and compression |
| 12/02/1986 | US4626345 Flocculation, floatation, and filtration; for drinking |
| 10/14/1986 | CA1212790A1 Bioreactor |
| 09/10/1986 | EP0193565A1 Apparatus for clarification of water. |
| 09/02/1986 | US4609460 Anaerobic purification equipment for waste 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 |
| 02/05/1986 | EP0170332A1 Anaerobic purification equipment for waste water |
| 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 |
| 10/08/1985 | US4545788 Process and apparatus for discharging and degassing a slurry from an attack tank |
| 09/03/1985 | US4539111 Extraction apparatus |
| 06/20/1985 | WO1985002605A1 Deoxygenation process and apparatus |
| 05/28/1985 | US4519997 Method for improving the initial activity of activated hydrazine |
| 05/22/1985 | EP0142018A1 Method and apparatus for cleaning waste water |
| 04/30/1985 | US4514297 Anaerobic digestion of organic sludge-methane production |
| 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 |
| 03/06/1984 | US4435188 Anaerobic treatment of organic wastes; methane production |
| 02/07/1984 | US4430512 Water, ducts, valves, magnets, detectors, sampling, floats, pumps |
| 01/31/1984 | CA1161579A1 Process for working up waste water containing phosphorus |
| 09/27/1983 | US4406795 Separating protein solids from fat-containing liquid by filtration |
| 08/16/1983 | US4399037 Centrifugal filtration |
| 07/26/1983 | US4395546 Decoloring effluents |
| 03/01/1983 | CA1141943A1 Process and equipment for the extraction of solid material from liquid containing solids granulated by heat effect |
| 12/07/1982 | CA1136830A1 Conversion of extraction residues originating from phosphoric acid decontamination to solid deposition products |
| 09/21/1982 | US4350570 Water desalination method |
| 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 |
| 03/23/1982 | US4321125 Apparatus for electrochemical purification of contaminated liquids |
| 12/29/1981 | CA1115432A1 Aerobic/anaerobic sludge digestion process |
| 12/15/1981 | US4306080 Process for the purification of industrial effluents |
| 10/29/1981 | WO1981003030A1 Improvements relating to installations and methods of preparing combustible gases through fermentation |
| 10/28/1981 | EP0038759A1 Plant for producing combustible gases by fermentation |
| 09/17/1981 | WO1981002618A1 Method and installation for regeneration oil polluted condensed water and for recuperating the residual heat of said condensed water |
| 07/21/1981 | US4279876 Conversion of extraction residues originating from phosphoric acid decontamination to solid deposition products |
| 05/05/1981 | CA1100534A1 Treatment of hazardous waste |
| 04/14/1981 | US4261836 Method of and a device for a continuous conditioning of sludges |
| 03/19/1981 | WO1981000707A1 Method of desalinating water |
| 03/10/1981 | CA1097021A1 Apparatus for sterilizing liquids |
| 03/03/1981 | US4253949 Sewage treatment-flotation apparatus |
| 03/03/1981 | CA1096978A1 Selective removal of iron cyanide anions from fluids containing thiocyanates |
| 02/10/1981 | US4250391 Apparatus for sterilizing liquids |
| 01/13/1981 | CA1093497A1 Multiple-stage flash evaporation unit and a process for using such unit |
| 11/11/1980 | CA1089573A1 Method for treating waste water containing cyanide ion |
| 10/30/1980 | WO1980002235A1 A method and an apparatus for gathering valuable floating,dissolved and suspended substances from sea water |
| 10/29/1980 | EP0018340A1 An offshore plant for recovery of valuable floating, dissolved and suspended materials from sea water |
| 10/29/1980 | EP0017741A1 Process for converting residues from the purification of phosphoric acid by extraction into solid waste products suitable for deposition |
| 10/28/1980 | US4230568 Adding calcium-containing cement, aluminum silicate; allowing to set, addition of active carbon |
| 10/07/1980 | CA1087132A1 Method for coalescing mercury particles |
| 09/16/1980 | CA1085755A1 Method for depolluting fresh and sea water from petroleum products |