| Patents for C02F 11 - Treatment of sludge; Devices therefor (21,423) |
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| 02/25/1992 | US5091079 Sludge treatment apparatus |
| 02/25/1992 | CA1296187C Slurry fuel comprised of a heat treated, partially dewatered sludge with a particulate solid fuel and its method of manufacture |
| 02/20/1992 | WO1992002151A1 A method of treating a biodegradable material |
| 02/20/1992 | DE4121971A1 Disposal of contaminated liquids - comprises thickening liq.-solid mixt. then drying in fluidised bed dryer to produce granular material suitable for dumping |
| 02/20/1992 | DE4036348C1 Waste water treatment with improved efficiency - by mechanically cleaning and biologically treating before absorbing residual particles using e.g. active carbon |
| 02/19/1992 | EP0471132A1 A thermic lithosynthesis process for disposal of liquid and solid industrial wastes |
| 02/19/1992 | CN2096562U Automactic recovery tub for moving sludge of large-scale methane engineering |
| 02/18/1992 | US5089142 Methods for dewatering coal and mineral concentrates |
| 02/12/1992 | CN2095863U Micropressure adjustable methane producing device |
| 02/11/1992 | US5087378 Process for enhancing the dewaterability of waste sludge from microbiological digestion |
| 02/11/1992 | CA1295754C Process for treating waste water by wet oxidations |
| 02/06/1992 | DE4025063A1 Improved mechanical removal of water from industrial or natural sludge - by addn. of complex hydrophilic and/or hydrophobic inorganic additive |
| 02/06/1992 | DE4024769C1 Treatment of sludge contg. toxic heavy metals - comprises treating with excess hydrochloric acid, concentrating by thermal evapn. and distilling |
| 02/06/1992 | DE4017397C1 Dehydrating sludge compsn. - by forming gas bubbles using e.g. air, then pressing to remove water and air |
| 02/05/1992 | EP0469582A1 Process and apparatus for the treatment of polluted liquids |
| 02/05/1992 | EP0469443A2 Method of treating waste |
| 02/04/1992 | CA1295208C Multigrade asphalt cement product and process |
| 01/29/1992 | EP0468414A2 Paper using slag wool |
| 01/29/1992 | CN1058158A Innocuous treatment and using method for rubbish |
| 01/28/1992 | CA1294848C Method for improving the utilization of polyelectrolytes in dewatering aqueous suspensions |
| 01/21/1992 | US5082571 Caustic sulfide wet oxidation process |
| 01/21/1992 | US5082562 Dehydration press |
| 01/20/1992 | WO1992001637A1 Bioreactor |
| 01/15/1992 | EP0465479A1 A method of reprocessing sewage sludge. |
| 01/14/1992 | US5080026 Melting disposal method of sludge |
| 01/14/1992 | US5079852 Sludge treating apparatus |
| 01/14/1992 | CA1294236C Process for the hydrogenative reprocessing of carbon containing waste materials of synthetic or predominantly synthetic origin |
| 01/14/1992 | CA1294112C Insitu hazardous waste treating apparatus and method of using same |
| 01/08/1992 | EP0328574B1 Process for the conversion and working up of a mixture of organic matter, anorganic matter and water to a nearly dry product, as well as an installation for the execution of the process and application thereof by the conversion of manure slurry |
| 01/08/1992 | CN1057673A Preservation process of activated sludge |
| 01/07/1992 | US5078795 Adding Rice Hull Ash And A Strong Alkali |
| 01/02/1992 | EP0463442A1 Process and device for preparing wastes from machining by removal of ferromagnetic materials |
| 01/02/1992 | EP0463379A1 Process for the valorisation of sewage sludge |
| 01/02/1992 | EP0463062A1 Bioslurry reactor for treatment of slurries containing minerals, soils and sludges. |
| 01/02/1992 | DE4026714A1 Mobile system for dewatering and drying sewage sludge - has decanter and fluidised bed dryer on articulated road trailer with hydraulic system for reducing height of equipment during transport |
| 12/31/1991 | US5076895 Process and apparatus for recovering clean water and solids from aqueous solids using mechanical vapor recompression evaporators |
| 12/29/1991 | WO1992000250A1 A method and a system for drying sludge |
| 12/29/1991 | CA2085583A1 Method and a system for drying sludge |
| 12/27/1991 | EP0462225A1 Apparatus and method for stabilizing sludge |
| 12/27/1991 | EP0252924B1 Use as fuel of a mixture of cellulosic fibres and fat-and/or oilcontaining sludges or waste materials |
| 12/26/1991 | WO1991019678A1 Process for treating hydrous sludges containing heavy metal salts and primary flocculating agents |
| 12/24/1991 | US5075017 Supercritical water oxidation under pressure yields ash, carbon dioxide |
| 12/24/1991 | US5075015 Wastewater treatment by chlorination |
| 12/18/1991 | EP0461385A1 Process for the treatment of wastewaters from gasification plants operating under high pressures |
| 12/18/1991 | EP0397662B1 Process for treating colloidal solutions of lacquer sludges |
| 12/17/1991 | US5073271 Mixing scrubber waste liquids with sludge, flocculation, filtr ation, combustion of filter cake |
| 12/11/1991 | EP0461073A1 Device for wet oxidation |
| 12/11/1991 | EP0460814A1 Process for enhancing the dewaterability of waste sludge from microbiological digestion |
| 12/11/1991 | EP0460214A1 Flocculating apparatus |
| 12/11/1991 | CN2090377U Thickened sludge compression dewatering device |
| 12/04/1991 | EP0459603A1 Process and apparatus for continuous drying of wood chips, wood fibres or other bulk materials |
| 12/04/1991 | EP0459194A1 Process for the thermal disposal of sludge |
| 12/03/1991 | US5069787 Method and apparatus for removing cyanide from a fluid |
| 12/03/1991 | US5069783 Liquid treatment apparatus |
| 12/02/1991 | CA2043681A1 Process and apparatus for the continuous drying of wood shavings, wood fibres or other bulk materials |
| 12/01/1991 | CA2043585A1 Process for enhancing the dewaterability of waste sludge from microbiological digestion |
| 11/28/1991 | WO1991017812A1 Method of treating a suspension |
| 11/27/1991 | EP0458221A1 Process for drying sludge |
| 11/26/1991 | US5068040 Cleaning a substrate by exposing to ultraviolet radiation to produce a photochemical reaction to remove undesirable material |
| 11/26/1991 | US5068031 Sludge treatment apparatus |
| 11/26/1991 | CA1292391C Deodorization and cleaning of medium temperature wet off-gases derived from burning of wet waste sludge |
| 11/23/1991 | CA2042957A1 Method and installation for thermal disposal of sewage sludge |
| 11/21/1991 | EP0457203A1 Process for the emission-free drying of a substance in a drying drum |
| 11/21/1991 | DE4015489A1 Freeing waste material from heavy metals and dioxin(s) - by treating aq. slurry with active gas mixt. and precipitating heavy metals |
| 11/19/1991 | US5066371 Cycling through liquid treatment containers; countercurrent flow |
| 11/14/1991 | WO1991017229A1 Method for the base-catalyzed decomposition of halogenated and non-halogenated organic compounds in a contaminated medium |
| 11/14/1991 | DE4014619A1 Thermal decontamination of soil - using heat generated by burning waste prods. such as dried clarifier sludge, organic waste, etc. |
| 11/14/1991 | CA2016654A1 Method and apparatus for recirculating domestic gray water for reuse in purging toilets |
| 11/12/1991 | US5064526 Method for the base-catalyzed decomposition of halogenated and non-halogenated organic compounds in a contaminated medium |
| 11/07/1991 | DE4013597C1 Dewatering of sludge - by pressing, thin pressing filtrate out of sludge layer, stacking then sludge layers on top of each other, etc. |
| 11/06/1991 | EP0455117A2 dehydration press for mud |
| 10/31/1991 | WO1991016271A1 Process and equipment for utilizing sewage sludge |
| 10/31/1991 | WO1991013835A3 Methods for processing manure and a device therefor |
| 10/31/1991 | DE4013761A1 Procedure for drying particles of high surface area - by passing stream of heated gas to=and=fro through layer of material for drying without reaching temp. where additives are released |
| 10/31/1991 | DE4013760A1 Producing small sausage-shaped particles from paste-like materials - pressing materials through perforations in matrix element with shearing elements matrix |
| 10/31/1991 | DE4013259A1 Removal of solid material content from fibrous suspensions - comprises filtering waste water, drying any solid to specified dry-matter content and mixing with sludge obtd. from further solid-liq. sepn. |
| 10/30/1991 | EP0454210A1 Process for elimination of phosphor and suspended matter from waste water |
| 10/22/1991 | US5059404 Pulse combustor, resonant tubes, fluidized particles |
| 10/22/1991 | CA1290920C Production of useful materials including synthetic nepheline from bayer red mud |
| 10/17/1991 | DE4105605A1 Pre-clarification of waste water contg. faecal material |
| 10/15/1991 | US5057284 Bioslurry reactor for treatment of slurries containing minerals, soils and sludges |
| 10/15/1991 | US5057231 Heat exchanging; superheated steam |
| 10/15/1991 | US5057220 Process for treating waste water |
| 10/13/1991 | WO1991016154A1 A process for the combined treatment of waste materials |
| 10/10/1991 | DE4019982A1 Treating heavy metal-contg. industrial waste - with sodium poly:thio:carbonate soln. to remove heavy metal content |
| 10/10/1991 | DE4010695A1 Fluidised bed reactor contg. at least two heat exchangers - used independently or together for providing different quantities of heat simply |
| 10/09/1991 | EP0451006A1 Process for incinerating waste |
| 10/09/1991 | EP0450463A1 Process for contamination and purification of toxic media with predominant organic character |
| 10/09/1991 | EP0449976A1 AN EXTRACTION PROCESS AND APPARATUS TO REMOVE PCBs FROM SOIL AND SLUDGE |
| 10/08/1991 | US5055406 Optimun growth in higher salt concentration; for efficient methane production |
| 10/08/1991 | US5055196 Comminuting and dispersing surfactant |
| 10/07/1991 | WO1991015432A1 Process and apparatus for pathogen reduction in waste |
| 10/02/1991 | EP0449184A1 Method for treatment of liquid manure |
| 10/02/1991 | DE4009671A1 Disposing of waste contg. heavy metals, esp. sewage sludge etc. - by high temp. combustion in admixture with quinoline giving prod. used as substitute for heavy metal ore |
| 10/02/1991 | DE4000148A1 Appts. for decontaminating contaminated earth - by sepg. solids using high pressure water and air, washing solids with wash fluid floc-filtering obtd. colloidal dispersion, etc. |
| 10/01/1991 | US5053142 Method for treating polluted material |
| 10/01/1991 | US5053124 Rotting-slab system |
| 09/26/1991 | DE4009249A1 Filter medium for purificn. of effluent waters etc. |
| 09/26/1991 | DE4008797A1 Condensing sewage sludge - by addn. of fine grinding wheel waste |
| 09/25/1991 | EP0447530A1 Treatment of hazardous waste material. |