| Patents for C02F 11 - Treatment of sludge; Devices therefor (21,423) |
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| 08/03/1993 | US5232604 Process for the oxidation of materials in water at supercritical temperatures utilizing reaction rate enhancers |
| 08/03/1993 | US5232599 Vacuum extracting water through the layers of particle material and coarser material in the bottom of a box |
| 07/29/1993 | DE4213846C1 Redn. of nitrogen content of foul sludge - by passing sludge through alternating nitrification-denitrification stage between decomposition and water extn. |
| 07/28/1993 | EP0552583A1 Method and plant for the destruction of organic sludge, especially sewage sludge |
| 07/27/1993 | US5230845 Process for producing a ceramic product for use as a construction material |
| 07/27/1993 | US5230810 Corrosion control for wet oxidation systems |
| 07/27/1993 | US5230809 Method and apparatus for dewatering sludge materials |
| 07/27/1993 | US5230211 And production of clean synthesis gas, fuel gas and electrical power |
| 07/22/1993 | WO1993014046A1 Fertilizer mixture and process for production of the fertilizer mixture |
| 07/22/1993 | WO1993013846A1 Apparatus for the dewatering of sludge |
| 07/22/1993 | DE4300493A1 Sludge filter - has closure blocks to be operated for rinsing to clean filter without interrupting the filtration |
| 07/21/1993 | EP0551487A1 System for in-situ treatment of underwater contaminated material |
| 07/20/1993 | US5229011 Process for pathogen reduction in waste |
| 07/15/1993 | DE4200598A1 Solidification of inorganic waste prods. - dissolved in waters from metal treatment processes by addn. of quicklime into a mixing container |
| 07/14/1993 | EP0551061A1 Process for the preparation of a coagulating chemical |
| 07/14/1993 | EP0550948A1 Process for treatment of wastewater containing ammonium compounds |
| 07/14/1993 | EP0550790A2 A method for pretreating sludge of petroleum origin in readiness for destruction in an incinerator, and a system for implementing the method. |
| 07/14/1993 | CN1074150A Processing waste materials for anaerobic digestion of the biogenic-organic constituents of the garbage, particularly of the source separated organic waste, the wet waste, the residual waste and ...... |
| 07/13/1993 | US5227136 Bioslurry reactor for treatment of slurries containing minerals, soils and sludges |
| 07/13/1993 | US5227073 Method of dewatering suspensions or the like slurry-like mixtures |
| 07/11/1993 | CA2059194A1 Remediation methods for toxic materials |
| 07/08/1993 | WO1993013017A1 Improved process for separating red mud in production of alumina from bauxite |
| 07/08/1993 | CA2124570A1 Improved process for separating red mud in production of alumina from bauxite |
| 07/07/1993 | EP0550401A1 Processes and apparatus for endothermic reactions |
| 07/07/1993 | CA2070363A1 Process for treatment of wastewater containing inorganic ammonium salts |
| 07/01/1993 | DE4142253A1 Avoiding development of odour in drying metabolic waste - esp. stable manure or sewage sludge by mixing with soft lignite activated by very fine comminution and/or potassium chloride |
| 06/30/1993 | EP0549067A2 Method and apparatus for the continuous removal of dirt residues from metallic waste |
| 06/24/1993 | DE4142085A1 Sludge disposal - involves using water removal and fertiliser collection to develop a biomass for disposal |
| 06/24/1993 | DE4141889A1 Heavy metal removal from solid waste e.g. power station fly ash - by forming an aq. slurry of the material, adding chitosan or tannin as chelating agent, standing and sepg. the solid from the heavy metal-contg. soln. etc. |
| 06/24/1993 | DE4141639C1 Prodn. of humus-like substrate from purified sewage - comprises using solid sewage residue to condition sewage and reduce incandescence |
| 06/24/1993 | CA2085942A1 Method and apparatus for the continuous removal of dirt residues from metallic waste |
| 06/23/1993 | EP0547353A2 Method and apparatus for treating wastes from metallworking of ferromagnetic materials |
| 06/22/1993 | US5221323 Method of producing magnetic powders from heavy metal sludges |
| 06/22/1993 | US5220717 Method of making capsules of dehydrated sludge and apparatus therefor |
| 06/19/1993 | CA2085675A1 Method and apparatus for processing wastes from the machining of ferromagnetic materials |
| 06/17/1993 | DE4141345A1 Sewage sludge decontamination - forces sludge by centrifugal force against cathode wall, ionises heavy metals for deposition on anode |
| 06/15/1993 | US5219270 Reaction barrel with rocket nozzles in staggered alignment and connecting ducts of unequal length |
| 06/13/1993 | CA2085188A1 Process for the preparation of a caogulating chemcial |
| 06/10/1993 | WO1993011396A1 Evaporating plant for processing sludges |
| 06/09/1993 | EP0545683A1 Disposal of sewage sludge |
| 06/09/1993 | EP0545383A1 Separation of solids from aqueous suspensions using modified amine functional polymers |
| 06/09/1993 | EP0544883A1 Process for drying and solvent-extraction of solids and sludges. |
| 06/09/1993 | DE4140038A1 Sludge burning avoiding surplus fuel, for temp. control - using organic matter in predried sludge as fuel with additional air and drying in electrokinetic stage |
| 06/08/1993 | US5217935 Processes for regenerating catalysts contaminated with carbonaceous materials |
| 06/08/1993 | US5217625 Acidification, hydrothermal treatment, neutralization, partial oxidation, separation of ash, by-product gases |
| 06/08/1993 | US5217615 Bacterial leaching process and composition |
| 06/08/1993 | US5216821 System and method for removing a volatile component from a matrix |
| 06/03/1993 | DE4234507A1 Controlling sludge removal from water - by using capillary suction time measurements to control amount of polyelectrolyte coagulant to be added |
| 06/02/1993 | EP0544227A1 Process for continuous sludge thickening with hydrocyclones |
| 06/02/1993 | EP0465479B1 A method of reprocessing sewage sludge |
| 06/01/1993 | US5215592 Dense fluid photochemical process for substrate treatment |
| 06/01/1993 | CA1318633C Disposal process and apparatus for oil refinery sludge |
| 05/26/1993 | EP0543133A1 Process and installation for treating thickened sewage sludge |
| 05/19/1993 | DE4141832C1 Waste water process and appts. treats mixt. of activated and primary sludges |
| 05/19/1993 | DE4130457A1 Processing clarified sludge for gas prodn. and reusable prodn. e.g. for cement - by dewatering and thermal decomposition of organic component with coal |
| 05/19/1993 | CN2133585Y Methane filter |
| 05/18/1993 | US5211724 Pollution control |
| 05/18/1993 | US5211723 Burning sanitary sewage sludge |
| 05/13/1993 | DE4136446A1 De-watering sludge esp. sewage - by forming drainage system within sludge body by producing thermally dried channels, layers and/or lattices |
| 05/05/1993 | EP0539430A1 Bioreactor. |
| 05/05/1993 | CN1071648A Apparatus for treating organic waste and sewerage |
| 05/04/1993 | US5207912 Mixing with a bulking agent for aerobic treatment of sludge |
| 05/04/1993 | US5207911 Method for the breakdown and recycling of solid urban waste by anaerobic fermentation |
| 05/04/1993 | US5207910 Combined filtration and fixation of heavy metals |
| 04/29/1993 | WO1993008129A1 Chemical oxidative process for purifying highly contaminated waste water |
| 04/28/1993 | EP0538561A1 Process for the obtention of humus from wastes such as semi-liquid manure or sewage sludge without emission of ammonia |
| 04/27/1993 | US5205910 Distillation chamber for extracting dry-cleaning solvent from sludge |
| 04/27/1993 | CA1316942C Process for extracting and disposing of nitrophenolic by-products |
| 04/21/1993 | EP0537694A1 Process for treating effluent from flue-gas desulfurization system and apparatus thereof |
| 04/21/1993 | EP0537637A1 A system for drying moist sludge |
| 04/21/1993 | EP0399035B1 Method of removing arsenic and/or other amphoteric elements from sludge and solid waste materials |
| 04/14/1993 | EP0536963A1 Process for enhancing the dewaterability of waste sludge from microbiological digestion |
| 04/14/1993 | EP0536236A1 A method and a system for drying sludge. |
| 04/12/1993 | CA2079400A1 Process for enhancing the dewaterability of waste sludge from microbiological digestion |
| 04/08/1993 | DE4131604A1 Outwards flow tubular membrane cross-flow filter - with internal low clearance pump rotor for solids concn. |
| 04/07/1993 | EP0535758A1 Toxic waste fixant and method for using same |
| 04/07/1993 | EP0535757A1 Fixant for mixed organic and inorganic contaminated materials and method for using same |
| 04/07/1993 | EP0535660A1 Process for removing water and substances solubles in hydrophilic solvents from finely divided solids |
| 04/07/1993 | EP0535544A1 Process for treating sewage |
| 04/07/1993 | EP0535320A1 Oxidation of substances in water with electrolytically in situ produced oxygen |
| 04/07/1993 | EP0535197A1 System for separating biological sludge from purified water. |
| 04/07/1993 | EP0323970B1 Sewage treatment |
| 04/06/1993 | US5200093 Pressurized feed of organic and inorganic materials; precipitation; maintaining temperature gradient; collection in aqueous brine |
| 04/06/1993 | US5200085 Circulation; heating; pressurization; granulation; adiabatic expansion; separation; treatment of slaughterhouse waste |
| 04/06/1993 | US5199987 Feeding clinker precursors into rotary kiln, firing to produce clinker and flue gas, dischargign gas, drying a paper sludge, introducing sludge into kiln and combusting such that ash becomes incorporated in clinker |
| 04/01/1993 | WO1993006046A1 A dewatering method and agent |
| 04/01/1993 | WO1993005694A1 Human waste disposal apparatus and process |
| 04/01/1993 | DE4223618A1 Processing contaminated mixt. of water and sludge |
| 04/01/1993 | DE4116773C1 Appts. for single stage oxidn. of combustible aq. sewage sludge with heat generation - has conical reaction chamber with upper sepn. chamber and with central lower air inlet and solid and/or liq. fuel outlet |
| 03/31/1993 | EP0534650A1 Corrosion control for wet oxidation systems |
| 03/30/1993 | US5197204 Rotary dryer and associated drying plant |
| 03/26/1993 | CA2077206A1 Corrosion control for wet oxidation systems |
| 03/25/1993 | DE4130975A1 Sludge water removal in reduced time - uses hydrophobic reagent additive before mechanical water extn. to reduce process times |
| 03/24/1993 | EP0532797A1 A method of converting biological masses for agricultural use |
| 03/23/1993 | US5196043 Delayed, exothermic, alkaline sterilization method for treating wastewater sludges |
| 03/21/1993 | CA2074576A1 Method of making a filler from automotive paint sludge, filler, and sealant containing a filler |
| 03/18/1993 | CA2058568A1 Method of converting biological masses for agricultural use |
| 03/17/1993 | EP0531864A1 Process for the treatment of waste water containing salts |
| 03/17/1993 | EP0531832A1 A stirring and composting apparatus |
| 03/17/1993 | EP0524245A4 Process and apparatus for pathogen reduction in waste |