Patents
Sitemap › C02 - Treatment of water, waste water, sewage, or sludge › C02F - Treatment of water, waste water, sewage, or sludge › C02F 11 - Treatment of sludge; Devices therefor
Patents for C02F 11 - Treatment of sludge; Devices therefor (21,423)
11/1990
11/29/1990WO1990014145A1 Filter-dryer
11/29/1990EP0363429A4 Process for chemical stabilization of heavy metal bearing dusts and sludges, such as eaf dust.
11/28/1990EP0399035A1 Method of removing arsenic and/or other amphoteric elements from sludge and solid waste materials.
11/28/1990CN1047339A Apparatus for stirring fermenter
11/27/1990US4973194 Method for burial and isolation of waste sludge
11/27/1990CA1276862C Method of removing scale from wet oxidation treatment apparatus
11/27/1990CA1276776C Method and reaction apparatus for effecting controlled chemicalreactions
11/22/1990EP0398738A1 Dewatering agents for polymer slurries
11/22/1990EP0398410A1 Process for immobilizing environmentally noxious metals and organic substances
11/22/1990EP0398298A1 Method for transforming surplus mud from purification processes for civil and/or industrial recycled water into inert substances and plant for the realisation of this method
11/22/1990EP0397953A1 Process for sludge dewatering
11/20/1990US4971705 Method and apparatus for dewatering material
11/20/1990US4970971 System of and apparatus for sanitizing waste material
11/20/1990US4970803 Method for drying sludge
11/18/1990CA2013026A1 Dewatering agents for polymer slurries
11/15/1990WO1990013521A1 Method for the simultaneous transport and pasteurization of sewage sludge
11/15/1990WO1990011263A3 Composting plant and composting process
11/14/1990EP0396852A1 Process and installation drying sewage sludge
11/14/1990EP0165305B1 Chemical reformer
11/14/1990CN1010407B Process for operating a fermenter and apparatus for stirring the fermenter
11/08/1990DE4010342A1 Conversion prods. of industrial, domestic and other wastes
11/07/1990EP0396390A1 Method for processing organic waste and apparatus therefor
11/07/1990EP0395633A1 Composting plate system.
11/06/1990CA1275959C Method and apparatus for treating oil-water-solids sludges and refinery waste streams
11/03/1990CA2015962A1 Method for processing organic waste and apparatus therefor
10/1990
10/30/1990US4966706 Peracid treatment; free of pathogenic microorganisms
10/25/1990DE3917175A1 De-watering mud, sludge, etc. - by passing down between two concentric conical filter surfaces, compressing into pellets and drying
10/24/1990EP0393378A2 Apparatus for composting and process therefor
10/24/1990EP0393278A2 Oil recovery process and apparatus for oil refinery waste
10/24/1990CN2064362U Equipment for collecting and pressing marsh gas
10/23/1990US4964995 Supercritical separation process for complex organic mixtures
10/23/1990US4964226 High turndown rotary dryer flights
10/23/1990CA1275511C Process for treating ammonium nitrate-containing waste water
10/23/1990CA1275509C Method and apparatus for drying sludge
10/23/1990CA1275358C Process for the gasification of sewage sludge
10/18/1990WO1990012249A1 A method of reprocessing sewage sludge
10/17/1990EP0392727A1 Process for the destruction of organic waste material
10/17/1990EP0392144A1 Use of the fine particle fraction of sediments from waters
10/11/1990DE3911716A1 Process and equipment for drying sludges - with steam evolved in double-screw contact dryer, used to preheat the sludge in heat exchanger
10/10/1990EP0391753A1 Process and apparatus for aerating a moist, fermentable, organic product with treatment process control
10/10/1990EP0391035A2 Dense fluid photochemical process for substrate treatment
10/10/1990CN1045962A Device for dehydration of sewage sludge
10/10/1990CN1009916B Anaerobic purification apparatus for waste-water
10/04/1990WO1990011263A2 Composting plant and composting process
10/04/1990DE3910551A1 Process for the thermal purification of liquid mixtures of fatty acids of hydrocarbon compounds having pollutants contained therein within the low-temperature conversion of sewage sludge and industrial sludges
10/03/1990EP0390131A2 Conversion process for substrates such as sewage and/or industrial sludges, garbage, and similar organic parts containing wastes
10/03/1990EP0389698A1 Method and apparatus for the production and liquefaction of gases
10/03/1990CN1009807B Process and apparatus for fixing, encapsulating, stabilizing and detoxifying heavy metals in sludges
10/03/1990CA2009748A1 Dense fluid photochemical process for substrate treatment
10/02/1990US4960524 Method for soil consolidation
10/02/1990US4960512 Apparatus for sludge thickening
10/02/1990CA1274926A1 Apparatus for anaerobic treatment of waste water
09/1990
09/28/1990CA2013152A1 Composting system and composting apparatus
09/26/1990EP0389329A1 Process for insolubilisation and agglomeration of wastes incineration flue gas cleaning residue
09/26/1990EP0389328A1 Method for insolubilizing and agglomerating incinerator fly ash
09/26/1990CN1045608A Heat-type cleaning solution for anti-choking of sewage
09/26/1990CN1009730B Treating technique of waste chronium-bearing residue with barium salt
09/25/1990CA1274634A1 Method for utilizing sludge obtained from processed waste lubricating oils
09/20/1990WO1990010838A1 Vacuum freezing process and vapor processing unit
09/19/1990EP0388108A2 Treatment of bayer process wastes
09/19/1990EP0250475B1 Method and plant for the recovery of energy from waste and residues
09/18/1990US4956926 For drying mechanically dewatered sewage sludge to produce pellets
09/14/1990WO1990010602A1 Bioslurry reactor for treatment of slurries containing minerals, soils and sludges
09/14/1990CA2050296A1 Bioslurry reactor for treatment of slurries containing minerals, soils and sludges
09/13/1990DE3918259C1 Electron scanning tunnel microscope - has emitter needle next to specimen within micro-electrically adjustable carrier movable in three directions
09/13/1990DE3907817A1 Apparatus and process for dewatering liquid manure (slurry) and sewage sludge
09/13/1990CA2012097A1 Treatment of bayer process wastes
09/13/1990CA2001538A1 Application of glucanase to control industrial slime
09/12/1990EP0386274A1 Process and device for drying sewage sludge
09/12/1990EP0385972A1 Method for improving the utilization of polyelectrolytes in dewatering aqueous suspensions.
09/09/1990WO1990010603A1 Apparatus and method for stabilizing sludge
09/09/1990CA2049057A1 Apparatus and method for stabilizing sludge
09/04/1990US4953478 Odor control for a sludge treatment process
09/03/1990WO1990009967A1 A device for the dehydration of sewage sludge
09/03/1990CA2047732A1 Device for the dehydration of sewage sludge
08/1990
08/29/1990EP0384846A1 Process for the chemical fixation of a liquid aqueous sludge making use of a pozzuolanic reaction
08/29/1990EP0384162A1 Process for the disinfection and aerobic stabilisation of sewage sludge
08/29/1990EP0384081A2 Compressive and electroosmotic dehydrator
08/29/1990CN1044966A Recovery and reuse method of papermaking effuent
08/28/1990US4952242 Composition for solidification or semi-solidification of waste materials
08/24/1990WO1990009835A1 Flocculating apparatus
08/24/1990CA2010828A1 Chemical fixation process of liquid aqueous mud by implementation of a pouzzolanic reaction
08/22/1990EP0383565A1 Processes and apparatus for endothermic reactions
08/22/1990EP0383522A1 Separation technique for oil ontaminated sludge
08/21/1990US4949655 Process for the utilization of powdered solid waste
08/16/1990DE4000834A1 2 stage brewery wastes treatment - comprises hydrolysis and methano genesis
08/16/1990DE3904262A1 Sludge drying plant to be operated in particular together with a biogas plant
08/15/1990CN1009160B Waste treatment method and device
08/14/1990US4948516 Method of disposing of wastes containing heavy metal compounds
08/14/1990US4948511 Solvent extraction with countercurrent flow of nonpolar, water-immiscible hydrocarbon mixture, burning contaminated stream
08/13/1990CA2009801A1 Unique and effective separation technique for oil contaminated sludge
08/09/1990WO1990008741A1 Wastewater treatment process and apparatus for wastewater treatment
08/08/1990EP0381007A1 Process and installation for the anaerobic digestion of highly charged process waters
08/08/1990EP0380821A1 Process for phase separation in liquid manure
08/08/1990EP0210196B1 Method and device for drying and conditioning poultry manure or similar pasty materials
08/01/1990EP0379657A1 Sludge drying process
07/1990
07/25/1990WO1990008645A1 An apparatus for dewatering and squeezing material
07/25/1990CA2025769A1 Apparatus for dewatering and squeezing material
07/24/1990US4943165 Sludge stabilizing method and apparatus
07/18/1990EP0378521A1 Water purification process
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