| Patents for C02F 11 - Treatment of sludge; Devices therefor (21,423) |
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| 01/13/1981 | US4244804 Slime and sludge dewatering |
| 01/13/1981 | US4244779 Recycle flue gases, collect dusts for thermal decomposition |
| 01/13/1981 | US4244287 Two-stage mechanical dewatering of sewage sludge |
| 01/13/1981 | CA1093520A1 Mixture concentrator |
| 01/13/1981 | CA1093519A1 Mixture concentrator |
| 01/13/1981 | CA1093474A1 Method and apparatus for removing filterable substances from a liquid |
| 01/07/1981 | EP0022072A1 Method and apparatus for concentrating aqueous sludge by electroosmosis |
| 01/07/1981 | EP0021875A2 Process for eliminating a combustible material enveloping solid fragments and apparatus for carrying out said process |
| 01/07/1981 | EP0020904A1 Use of calcium sulfate in sewage sludge dewatering |
| 01/07/1981 | EP0020691A1 Immobilization of waste material |
| 12/30/1980 | US4242220 Waste disposal method using microwaves |
| 12/30/1980 | CA1092730A1 Process for the continuous treatment of wet sludge from a sewage treatment plant |
| 12/30/1980 | CA1092360A1 Process for recovery of selected metal values from waste waters |
| 12/23/1980 | US4240905 High solids mixture aeration method |
| 12/23/1980 | US4240904 Hydrolysis of microorganisms in the presence of ammonia or ammonium carbonate |
| 12/23/1980 | US4240210 Method and apparatus for utilizing solar energy in a water and waste management system |
| 12/23/1980 | US4240164 Device in a toilet for biological degradation of excrement |
| 12/23/1980 | CA1091857A1 Device in a toilet for biological degradation of excrement |
| 12/11/1980 | WO1980002650A1 Process for concentrating an aqueous sludge by electro-osmosis |
| 12/10/1980 | EP0019733A1 Process for optimalizing the metabolic activity of micro-organisms in the substrate of a biologic reaction system |
| 12/09/1980 | CA1091185A1 Process and apparatus for purifying waste waters |
| 12/02/1980 | US4236974 Process and apparatus for purifying waste waters |
| 12/02/1980 | US4236382 Separation of an aqueous solution by the improved vacuum freezing high pressure ice melting process |
| 12/02/1980 | CA1090538A1 Process for the wet oxidation of organic substances |
| 11/26/1980 | EP0019216A1 Process for purifying waste water |
| 11/26/1980 | EP0019215A1 Process for preparation of denatured polyaddition products from residues of distillation of isocyanates and biomasses and their use as reactive fillers as nutritious matter for plants and as binder in the production of panels or shaped pieces |
| 11/26/1980 | EP0019214A1 Use of reactive, organic fillers for the preparation of polyurethane plastics |
| 11/26/1980 | EP0019176A1 Process for dewatering waste water sludges on compartment filter presses |
| 11/26/1980 | EP0019175A1 Process for the improvement of the dewatering behaviour of sludges |
| 11/18/1980 | US4234632 Coating waste particles with a thermosetting resin, compacting, curing, and coating with a thermoplastic resin |
| 11/18/1980 | US4234448 Method and apparatus for treating radioactive waste |
| 11/18/1980 | US4234426 Wet combustion system incorporating autoregulation |
| 11/18/1980 | US4234423 Energy recovery system |
| 11/18/1980 | CA1090016A1 Organic waste drying process |
| 11/12/1980 | EP0018366A1 Method and apparatus for effecting subsurface, controlled, accelerated chemical reactions. |
| 11/11/1980 | CA1089189A1 Disposal of the residue of the exhaust gas washers of furnaces in particular bituminous coal power stations |
| 11/04/1980 | US4231862 Method for the preservation of an activated sludge |
| 11/04/1980 | CA1089125A1 Anaerobic treatment |
| 10/29/1980 | EP0018348A1 Process and device for the treatment of waste material |
| 10/29/1980 | EP0017989A1 Apparatus and process for the aeration of a high solids concentration pseudoplastic liquid-solid mixture |
| 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 |
| 10/28/1980 | US4230451 Apparatus for the thermal treatment of organic materials |
| 10/21/1980 | US4229296 Wet oxidation system employing phase separating reactor |
| 10/21/1980 | US4229295 Solidification of aqueous sludge |
| 10/21/1980 | US4229293 Dewatering of slimes from phosphate ores |
| 10/15/1980 | EP0017274A1 Process and apparatus for the treatment of manure |
| 10/15/1980 | EP0017064A1 Apparatus for the aeration of waste water or sludge |
| 10/07/1980 | US4226712 Method and apparatus for treating water containing wastes |
| 10/07/1980 | US4226673 Color removal from paper and pulp mill aqueous effluents |
| 10/07/1980 | US4226631 With hydraulic cement and lipids |
| 10/02/1980 | WO1980002047A1 Method and device for separating the solid phase from the drilling mud |
| 10/02/1980 | WO1980002043A1 Device for degassing the drilling mud |
| 09/30/1980 | US4224821 Apparatus and method for sensing the quality of dewatered sludge |
| 09/30/1980 | CA1086873A1 Process for the purification of waste water |
| 09/30/1980 | CA1086658A1 Filter sock with increased thread count at ends |
| 09/23/1980 | US4223614 Plant for the treatment of waste |
| 09/18/1980 | WO1980001922A1 Process for treating manures |
| 09/17/1980 | EP0015476A1 A method of oxidizing organic compounds in an aqueous system and a catalyst therefor |
| 09/16/1980 | CA1085976A1 Treatment of aqueous sludges |
| 09/16/1980 | CA1085768A1 Solid waste disposal system |
| 09/09/1980 | US4221680 Treatment of substances |
| 09/09/1980 | US4221661 Method of dehydrating organic sludge |
| 09/09/1980 | CA1085520A1 Handling of waste material |
| 09/09/1980 | CA1085139A1 Apparatus and process for continuous concentration and washing of solids from a solids-containing fluid |
| 09/03/1980 | EP0015157A1 Process and apparatus for separating water from an aqueous mixture |
| 09/03/1980 | EP0015116A1 Process for the production of fatty acid soaps from sludge by extraction and subsequent saponifying |
| 09/03/1980 | EP0014767A1 Acrylyl or methacrylyl ureas containing quaternary groups and process for their preparation |
| 09/02/1980 | CA1085069A1 Incineration of lime-conditioned sewage sludge with high sulfur fuel |
| 08/19/1980 | CA1083758A1 Wet air oxidation apparatus |
| 08/12/1980 | US4217222 Apparatus for processing municipal solid waste and sewage sludge |
| 08/12/1980 | US4217218 Removal of solids from a wet oxidation reactor |
| 08/06/1980 | EP0013822A2 Improvements in the treatment of hazardous waste |
| 08/05/1980 | US4216012 Process for the treatment of incinerated sewage sludge ash |
| 08/05/1980 | CA1083058A1 Methane production process by waste fermentation |
| 08/05/1980 | CA1082983A1 Mechanical dewatering process |
| 07/29/1980 | US4214985 Method for sewage treatment with bacteria |
| 07/29/1980 | US4214887 Sewage and waste water treatment |
| 07/22/1980 | US4214050 By intermittent immersion in a buffered bactericidal solution |
| 07/22/1980 | US4213864 Combination of a biological dry toilet and a biological waste water purifying plant |
| 07/22/1980 | US4213857 Anaerobic digestion process |
| 07/22/1980 | US4213407 Flash drying sludge derived fuel process |
| 07/15/1980 | US4212735 Cocatalyst system of nitrate, bromide or iodide, and transition metal ions |
| 07/15/1980 | US4212732 Raw liquid waste treatment process |
| 07/10/1980 | WO1980001407A1 Flash drying sludge derived fuel process |
| 07/08/1980 | US4211174 Sulfur-containing by-product inhibition |
| 07/01/1980 | US4210626 Manufacture of magnesium carbonate and calcium sulphate from brine mud |
| 07/01/1980 | US4210531 Process for dewatering mineral concentrates |
| 07/01/1980 | CA1080863A1 Process for treating waste water |
| 06/24/1980 | US4209396 Methods for use in water purification particularly sewage treatment |
| 06/24/1980 | US4209393 Sewage sludge additive |
| 06/24/1980 | US4209335 Method and composition, including particular additive for hydraulic cement, for fixing waste matter |
| 06/24/1980 | CA1080114A1 Elutriation leg and method |
| 06/23/1980 | EP0018366A4 Method and apparatus for effecting subsurface, controlled, accelerated chemical reactions. |
| 06/12/1980 | WO1980001217A1 Immobilization of waste material |
| 06/10/1980 | US4207186 Alcohols and ethers |
| 05/29/1980 | WO1980001067A1 Method for sewage treatment with bacteria |
| 05/28/1980 | EP0011573A1 Process for treating sludge from septic tanks |
| 05/27/1980 | US4204958 Method and apparatus for treatment of sludge |
| 05/20/1980 | US4203863 Evaporation by radiation |