Patents
Sitemap › C02 - Treatment of water, waste water, sewage, or sludge › C02F - Treatment of water, waste water, sewage, or sludge › C02F 9 - Multistep treatment of water, waste water or sewage
Patents for C02F 9 - Multistep treatment of water, waste water or sewage (41,429)
10/1982
10/13/1982EP0062543A1 Improved physical-chemical waste treatment method and apparatus
10/05/1982CA1132938A1 Integrated waste water treatment from anodising processes, and installation for said treatment
09/1982
09/21/1982US4350597 Apparatus and process for treatment of sludge
09/14/1982US4349436 Grate and water recovery system
09/08/1982EP0059350A1 Waste solution treatment module
09/07/1982US4347704 Thermal power plant water treatment process
08/1982
08/24/1982US4345996 For flow coupling to satellite reaction and supply units
08/17/1982US4344826 Distillation system and process
08/10/1982US4343706 Method of removing heavy metals from industrial waste streams
08/10/1982CA1129567A1 Method and a device for removing from a liquid undesired components dissolved therein
08/04/1982EP0056855A2 Preparation of infusion grade water
08/04/1982EP0056832A1 Solution waste treatment
08/03/1982US4342650 Organic sludge-energy recycling method
07/1982
07/27/1982US4341639 Wastewater treatment
07/27/1982US4341636 Treatment of wastewater
07/27/1982CA1128460A1 Heavy metal removal from wastewater sludge
07/20/1982US4340487 Process for purifying water
07/20/1982US4340473 Predetermined flow rate which prevents coalescence of particles suspended in medium
07/20/1982US4340472 Water treatment plant
07/13/1982US4339596 Treatment of byproduct stream from adipic acid manufacture
07/13/1982US4339265 Sewage treatment method and apparatus
07/06/1982US4338200 Process for the removal of heavy metals from aqueous liquids
07/06/1982US4338191 Apparatus for treating fluids
06/1982
06/30/1982EP0054733A1 Surfactant, process for making it, and use of it
06/29/1982US4337129 Regeneration of waste metallurgical process liquor
06/22/1982US4336141 Wastewater treatment
06/09/1982EP0053410A1 Process for the removal of urea, ammonia and carbon dioxide from dilute aqueous solutions
06/09/1982EP0053265A1 Process for the regeneration of condensate from urea production plants
06/08/1982US4333913 Alkali metal hydroxides, reacting peroxide with mercury polysulfide to precipitate mercury oxide
06/01/1982CA1124897A1 Process for the removal of cyanides from effluent
05/1982
05/25/1982CA1124183A1 Coal filtering for purifying waste water under continuous regeneration of coal and recovery of heat
05/12/1982EP0051104A1 Process for the treatment of water containing nitrate
05/11/1982US4329215 Sodium hypochorite production and storage system
04/1982
04/13/1982US4324667 Process for purification of waste waters from aromatic amines
04/13/1982US4324666 Precipitation of manganous ferrocyanide by addition of manganese compound
04/13/1982US4324656 Installation for the withdrawal and purification treatment of waters and aqueous effluents
04/07/1982EP0048949A1 Method and apparatus for the treatment of waste water for analytic techniques
04/06/1982CA1121549A1 Process for the separation of polyvinyl alcohol from aqueous solutions
03/1982
03/31/1982EP0048603A1 Mixing and reaction chamber for liquid decontamination
03/31/1982EP0048448A1 Apparatus for purifying industrial waste water and the like
03/23/1982US4321151 Process for wastewater treatment and wastewater sludge conversion into energy
03/23/1982US4321150 Process for wastewater treatment and wastewater sludge conversion into energy
03/23/1982US4321149 Process for removing multivalent metals from waste effluents
03/18/1982WO1982000817A1 Wastewater treatment process
03/09/1982US4318788 From chromium-iron hydroxide sludge
03/02/1982US4317802 Process for separating molybdenum and/or other metals contained in residual organic effluents
03/02/1982US4317733 Water purification equipment
02/1982
02/23/1982CA1118713A1 Selective multiple electrode waste water treating system
02/09/1982CA1118123A1 Method and arrangement for treatment of sludge water
02/02/1982US4314077 Method for the production of urea and purification of water
02/02/1982US4313833 Waste water treatment system and process
02/02/1982US4313824 Waste water treatment system and process
01/1982
01/26/1982US4312760 Reaction with ferrous bisulfite to produce prussian blue
01/26/1982US4312754 Portable water purifier especially for domestic use
01/19/1982US4311597 Method and apparatus for treatment of wastewater
01/19/1982US4311596 Extraction of reusable water from a mineral mining process
01/19/1982CA1116763A1 Process for the removal of mercury and mercury compounds from aqueous solutions and industrial waste liquors
12/1981
12/29/1981CA1115437A1 Process for treating waste water
12/29/1981CA1115024A1 Process of hydrometallurgical treatment for eliminating impurities from a solution containing dissolved metals
12/29/1981CA1115009A1 Catch basin processing apparatus
12/22/1981CA1114966A1 Method of purifying tenside and detergent contaminated waste waters
12/16/1981EP0041592A1 Apparatus for removing suspended solids from an effluent
12/15/1981CA1114533A1 Process for neutralising spent nitric-fluorhydric acids
12/08/1981US4304673 Wastewater treatment process
12/08/1981US4304648 Degassing
12/08/1981US4304599 Heavy metal removal process
12/01/1981US4303511 Method of purifying tenside and detergent contaminated waste waters
12/01/1981CA1113617A1 Waste water process
12/01/1981CA1113616A1 Method and apparatus for sludge treatment
12/01/1981CA1113615A1 Process for the enzymatic treatment of waste water of wheat starch plants
11/1981
11/24/1981US4302677 Control arrangement for fluid sterilizing apparatus
11/24/1981CA1113193A1 Method and a system for treating liquid, in particular waste water
11/18/1981EP0040028A1 Water softening and reverse osmosis treatment system
11/18/1981EP0039819A1 Process for treating a liquid waste composition containing copper ions and an organic complexing agent
11/17/1981US4301097 Using portable tower
11/17/1981US4301014 Hydrolysis, precipitation of solubles with calcium hydroxide, catalytic oxidation of gases
11/17/1981CA1112581A1 Recovering dye by reverse osmosis through feed-built medium on a support
11/04/1981EP0039151A1 Water producing apparatus
10/1981
10/27/1981US4297222 Using ultraviolet radiation, and a microorganism growing bed of a non-woven fabric of a synthetic resin
10/27/1981EP0030559A4 Improved aqueous soap-based lubricant composition.
10/20/1981US4295967 Fluidized bed contact apparatus
10/20/1981CA1111158A1 Purification of waste water
10/13/1981US4294434 Heavy metal removal apparatus
10/06/1981US4293416 Which includes a clarifier with a special arrangement of baffles to enhance flocculation and precipitation
09/1981
09/29/1981US4292176 Use of activated carbon in waste water treating process
09/29/1981US4292175 Compact electrocatalytic sewage treatment unit for maritime use
09/29/1981US4292043 Process for working up effluent containing ammonium sulphate
09/17/1981WO1981002569A1 A method of purifying waste aqueous solutions from heavy metals
09/15/1981US4289617 Water softening and reverse osmosis system
09/15/1981US4289616 Apparatus for removing suspended solids from an effluent
09/15/1981US4289599 Apparatus for producing alkaline water and acidic water
09/15/1981US4289594 Treatment of waste compositions
09/02/1981EP0034825A2 Removal of residual acrylonitrile monomer
09/01/1981CA1108023A1 Recovery of suspended particulate metal from quench water
08/1981
08/25/1981US4285820 Combustion in the presence of steam, conversion to boric acid
08/04/1981CA1106404A1 Method for the production of urea and purification of water
07/1981
07/22/1981EP0032419A2 Process for the detoxification of aqueous media
07/21/1981US4279865 Organic compound oxidation plant
07/14/1981US4278582 Reaction with ammonia, ammonium hydroxide, mercaptan, hydrogen sulfide, or 1a or 2a phosphate, silicate, or carbonate
07/14/1981US4278539 Method for removing heavy metals from aqueous liquids
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