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)
12/1981
12/02/1981EP0040707A1 A method for dewatering slimes
12/01/1981US4303532 Dewatering of slimes
12/01/1981CA1113616A1 Method and apparatus for sludge treatment
11/1981
11/18/1981EP0039711A1 Amphoteric water-in-oil self-inverting polymer emulsion
11/17/1981CA1112443A1 Apparatus for treating organic waste
11/12/1981WO1981003169A1 Processing methods for the oxidation of organics in supercritical water
11/11/1981EP0039522A2 Process for the preparation of a liquid-absorbing and shock-absorbing material
11/04/1981EP0039324A1 Method of processing hydrosilicofluoric acid produced during the wet decomposition of phosphates, and arrangement for carrying out this method
10/1981
10/29/1981WO1981003030A1 Improvements relating to installations and methods of preparing combustible gases through fermentation
10/29/1981WO1981003029A1 System for converting waste materials into useful products
10/28/1981EP0038759A1 Plant for producing combustible gases by fermentation
10/28/1981EP0038420A1 Method and apparatus for the incineration of sewage sludge
10/27/1981US4297216 By adding an acid, heating, neutralizing and anaerobically digesting
10/21/1981EP0038235A1 Method of treating acid liquid wastes
10/20/1981US4295972 Exothermic reaction with calcium oxide
10/20/1981CA1111157A1 Treatment of arsenical effluents
10/20/1981CA1110949A1 Process for dewatering mineral concentrates
10/15/1981WO1981002888A1 Treatment of activated or humus sludge
10/14/1981EP0037590A2 Polymers of acrylyl or methacrylyl ureas containing quaternary groups, and their use as flocculation, sedimentation, dewatering and retention auxiliary agents
10/13/1981US4294706 Process for treating waste water
10/13/1981CA1110787A1 Thickener control system
10/13/1981CA1110498A1 Sludge drying system with sand recycle
09/1981
09/22/1981US4290897 Dewatering fine coal slurries using two types of organopolysiloxanes
09/22/1981US4290896 Dewatering fine coal slurries using organopolysiloxanes
09/22/1981US4290890 Sludge dewatering process and vehicle for use in such process
09/15/1981US4289625 Of plant material or organic waste to produce methane
09/15/1981US4289616 Apparatus for removing suspended solids from an effluent
09/15/1981US4289578 Process and apparatus for recovering clean water and solids from aqueous solids
09/15/1981CA1108866A1 Process for the treatment of incinerated sewage sludge ash
09/09/1981EP0035112A1 Method and apparatus for processing preferably rottable, solid and liquid waste material
09/08/1981CA1108403A1 Fuel from composting solid organic wastes
09/02/1981EP0034872A1 Process of and installation for dehydrating protein-comprising sludge
09/01/1981US4287069 Process for the improved working up of effluent
08/1981
08/25/1981US4285820 Combustion in the presence of steam, conversion to boric acid
08/18/1981US4284514 Treatment of hazardous waste
08/18/1981US4284503 Device for aerating sewage or sewage-sludges
08/04/1981CA1106510A1 Sludge thickening
08/04/1981CA1106404A1 Method for the production of urea and purification of water
07/1981
07/28/1981US4281186 Papermaking, sewage treatment
07/28/1981US4280921 Blending with powdered metals then consolidating with high pressure
07/28/1981CA1105698A1 Drier for small sized materials
07/21/1981US4279876 Conversion of extraction residues originating from phosphoric acid decontamination to solid deposition products
07/21/1981US4279693 Process for purifying polluted fluids
07/21/1981US4279516 Container for pasteurizing sludge
07/21/1981CA1105501A1 Disposal of heavy metal containing sludge wastes
07/15/1981EP0031894A2 Apparatus for the continuous mixing and granulating of sludge with solids
07/14/1981CA1105159A1 Process for the treatment of waste water
07/08/1981EP0031667A1 Improvements in the treatment of hazardous waste
07/08/1981EP0031558A1 Refuse incineration plant
07/07/1981US4277342 Treatment of municipal sewage sludge
07/07/1981US4276835 method for processing sewage sludge
07/07/1981CA1104424A1 Incineration with predrying of moist feed using hot inert particulates
06/1981
06/30/1981US4276198 Oxidation cocatalyst system comprising transition metal compound, nitric acid and hydrogen bromide or iodide
06/25/1981WO1981001701A1 Improved anaerobic and aerobic digestion of waste and biomass by use of lactobacillus culture additives
06/23/1981US4274880 Treatment of hazardous waste
06/09/1981US4272383 Wet oxidation of sewage sludge
06/09/1981US4272293 Procedure for the treatment of combined wet filter cakes
06/03/1981EP0029580A1 Process for producing carbon-enriched solid products and matching use of a kiln installation
06/02/1981US4271326 Method of processing organic waste into useful products
06/02/1981US4270974 Process and apparatus for recovering clean water and solids from aqueous solids
06/02/1981US4270279 Method for drying and sterilizing sewage sludge
06/02/1981CA1102456A1 Method of removing metallic impurities from sewage sludge
05/1981
05/12/1981US4267049 Comprising hydrolysis by enzymes and enzyme-producing microorganisms
05/12/1981CA1100819A1 Process for the treatment of a liquid waste and an apparatus therefor
05/12/1981CA1100817A1 Method of treating material in a fluidized bed reactor
05/12/1981CA1100815A1 Removal of solids from a wet oxidation reactor
05/06/1981EP0027998A1 Process for reabsorption and retention of phosphorus by activated biomass
05/06/1981EP0027910A1 Process for squeezing sewage sludges by means of a chamber filter press
05/05/1981CA1100534A1 Treatment of hazardous waste
04/1981
04/28/1981US4264212 Static mixer
04/21/1981CA1099832A1 Waste disposal
04/16/1981WO1981001007A1 Amphoteric water-in-oil self-inverting polymer emulsion
04/14/1981US4261836 Method of and a device for a continuous conditioning of sludges
04/08/1981EP0026440A1 Method of drying solid refuse biologically
04/07/1981US4260496 Water treatment, conveying
04/07/1981US4260488 Device for compacting and draining fluid sludges containing fibrous materials
04/07/1981US4260264 Biaxial vent extruder
03/1981
03/31/1981US4259251 Treatment of effluent
03/24/1981US4257897 Aerobic sludge treatment
03/18/1981EP0025369A1 Process to accelerate the natural evolution of a product, and applications
03/17/1981US4256630 Acidification, heating, dewatering
03/10/1981US4255067 Disposal of liquid waste and recovery of metals therefrom
03/03/1981CA1096630A1 Static mixer
02/1981
02/24/1981US4252462 Chemical landfill
02/17/1981US4251367 Wastewater treatment
02/17/1981CA1096064A1 Aerobic-anaerobic sludge digestion process
02/17/1981CA1096063A1 Combination of a biological dry toilet and a biological waste water purifying plant
02/17/1981CA1096062A1 Waste material digesters
02/17/1981CA1096061A1 Methods of and apparatus for aerobic decomposition of organic solids
02/11/1981EP0023899A1 Device for dewatering aqueous suspensions and slurries
02/10/1981US4249949 Methods for consolidating radioactive waste material using self-setting or water-settable compositions containing an organic polyisocyanate, a non-ionic surface active agent devoid of isocyanate-reactive groups and alkaline filler
02/10/1981US4249317 Solar drying apparatus and process for drying materials therewith
02/03/1981US4248709 Method of filtering sewer scum and apparatus therefor
02/03/1981US4248548 Sewage disposal system and apparatus
02/03/1981US4248164 Sludge drying system with sand recycle
02/03/1981CA1094956A1 Color removal with polyethyleneimine-coated polysulfone semipermeable membrane
01/1981
01/28/1981EP0022770A1 Treatment of sea discharged sewage
01/22/1981WO1981000103A1 Apparatus for producing sludge
01/20/1981US4245570 Sewage sludge disposal apparatus and method of disposal
01/13/1981US4244818 Method of removing metallic impurities from sewage sludge
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