| Patents for C02F 3 - Biological treatment of water, waste water, or sewage (46,453) |
|---|
| 10/14/1987 | CN86107836A Method of supplying air masses and producing jets of water |
| 10/13/1987 | CA1228182A1 Process for thickening digested sludge |
| 10/08/1987 | WO1987005892A1 Aeration type water treatment plant |
| 10/07/1987 | EP0240412A1 Septic tank |
| 10/07/1987 | EP0239693A2 Method of supplying air masses and producing jets of water |
| 10/06/1987 | US4698310 Efficiently discharging methane gas |
| 10/06/1987 | US4698158 Process for treating industrial wastewaters by activated sludge |
| 10/06/1987 | CA1227893A1 Anaerobic filtration apparatus for waste waters |
| 10/01/1987 | DE3610744A1 Apparatus for the direct aeration and circulation of, in particular, waste waters |
| 09/30/1987 | EP0239037A2 Pond installation for biological purification of polluted waste water |
| 09/30/1987 | EP0238902A2 Process and device for biological waste water purification |
| 09/30/1987 | EP0238774A2 Apparatus for water oxygenation |
| 09/30/1987 | EP0238773A1 Apparatus for raising the oxygen concentration in water |
| 09/30/1987 | EP0238511A1 Method and device for the oxygen enrichment of waters |
| 09/29/1987 | US4696747 Process for the elimination of nitrates by means of a microbiological conversion in the presence of hydrogen gas |
| 09/29/1987 | US4696746 Two phase anaerobic digestion |
| 09/29/1987 | US4696740 Activated sludge deposited on carrier particles |
| 09/24/1987 | WO1987005642A1 Sheet for forming twisted surface and production thereof |
| 09/24/1987 | WO1987005593A1 System for biological purification of water |
| 09/24/1987 | WO1987005592A1 The use of hydrophobic zeolites as adsorption material at the biological purification of wastewater |
| 09/24/1987 | DE3609215A1 Activation unit for biological waste water purification |
| 09/24/1987 | DE3608931A1 Cleaning apparatus for water aerators |
| 09/23/1987 | EP0238148A1 Method for purifying waste water |
| 09/22/1987 | US4695388 Apparatus and process for rapid sewage sludge separation |
| 09/22/1987 | US4695378 Acid mine water aeration and treatment system |
| 09/22/1987 | US4695376 Floating decanter |
| 09/16/1987 | EP0237430A1 Process for methanic fermentation with a fixed film and double flow |
| 09/16/1987 | EP0237391A1 Process and apparatus for waste water treatment |
| 09/16/1987 | EP0237039A2 Method for carrying out gas-producing biotechnological processes in solid-bed reactors and devices suitable for introducing and removing gas |
| 09/16/1987 | EP0237001A2 Process and device for purifying of gas containing biologically decomposable pollutants |
| 09/16/1987 | EP0236989A2 Process for cleaning drains for waste water containing fatty substances. |
| 09/16/1987 | EP0236778A1 Activated sludge treatment process |
| 09/16/1987 | EP0236375A1 Device for the oxygen enrichtment of liquids |
| 09/16/1987 | CN87100788A Production of cyanide hydratase |
| 09/16/1987 | CN87100532A Method for interisification of biochemical treament of sewage containing phenol and cyanide |
| 09/15/1987 | US4693827 Process for protection of biological nitrification systems |
| 09/15/1987 | US4693816 Biological filter heating arrangement for treatment of waste water |
| 09/15/1987 | CA1226748A2 Multiple-use coal-humus-based, treatment and processing medium |
| 09/11/1987 | WO1987005284A1 A method for biologically treating liquid with oxidizing medium, and apparatus for carrying out the method |
| 09/10/1987 | DE3606917A1 Method of accelerating the treatment process of waste water (effluent) in a digestion tower |
| 09/09/1987 | CN86101140A Purifying process for waste water |
| 09/08/1987 | US4692413 Removal of lignin from wood pulp produced in the kraft process |
| 09/08/1987 | US4692250 Rotating biological contactor |
| 09/08/1987 | US4692249 Flotation process for sludge recovery and energy conversion |
| 09/08/1987 | US4692241 Transported in sections to operating site |
| 09/08/1987 | CA1226420A1 Liquid multisolid fluidized bed processing |
| 09/03/1987 | DE3605727A1 Decanting apparatus |
| 09/02/1987 | EP0234760A2 Production of cyanide hydratase |
| 09/02/1987 | EP0234466A1 Diffuser for liquids, especially for oxygenation in clarification plants |
| 09/02/1987 | CN86100784A Using lake soil as carrier of anaerobe processing of waste water from acrylic fibres dyeing |
| 09/01/1987 | US4690895 Use of rLDM™ 1-6 and other ligninolytic enzymes in the bleaching of kraft pulp |
| 09/01/1987 | US4690849 Synthetic fibers; loops; |
| 09/01/1987 | US4690764 Aerator and aerobic biological treatment process using same |
| 09/01/1987 | US4690755 For high strength wastwater |
| 08/27/1987 | DE3605962A1 Process for nitrate depletion in the treatment of drinking water and apparatuses for carrying out the process |
| 08/27/1987 | DE3605507A1 Apparatus for gas-liquid mass transfer in the counter-current contact process |
| 08/27/1987 | DE3605398A1 Method of introducing a gas into a liquid in a sewage treatment plant |
| 08/26/1987 | EP0233719A2 Production of cyanide hydratase |
| 08/26/1987 | EP0233466A2 Process for biological purification of waste water |
| 08/26/1987 | CN87100664A Method for biological purification of sewage from ethylene glycol |
| 08/25/1987 | US4689255 Glass fiber composite |
| 08/25/1987 | CA1226080A1 Process and device for the regeneration of solid particles having a biological coating |
| 08/20/1987 | DE3703560A1 Process and device for introduction of gas into, and flotation of, free-flowing biomass suspensions |
| 08/20/1987 | DE3602860A1 Process for fermenting organic waste materials |
| 08/19/1987 | EP0232853A2 Process and multistep reactor for converting substances by means of catalysts |
| 08/19/1987 | EP0232607A2 Method and apparatus for the treatment of water, especially for the oxygen enrichment of water |
| 08/19/1987 | CN86100505A Purification of organic waste water by air-soluble microorganism adsorption |
| 08/18/1987 | US4687745 Enhancing strength and brightness stability |
| 08/18/1987 | US4687574 Portable waste water |
| 08/13/1987 | WO1987004695A1 Process for treating waste water |
| 08/13/1987 | DE3604415A1 Multiple-stage process and equipment for the conversion of organic and inorganic materials by catalysts |
| 08/13/1987 | DE3603605A1 Process for treating water in the aquifer to decrease the nitrate content |
| 08/12/1987 | EP0232217A2 Process and installation for purification of waste water |
| 08/12/1987 | EP0231762A2 Process for removing calcium carbonate formed during anaerobic treatment of organically loaded waste water |
| 08/12/1987 | EP0231681A1 Plants and processes for the biological purification of waste water, especially municipal sewage |
| 08/12/1987 | EP0231275A1 Use of ligninolytic enzymes in paper pulp production. |
| 08/12/1987 | CN87100172A Process for biological purification of waste-water |
| 08/11/1987 | US4686045 Aeration of cesspools |
| 08/06/1987 | DE3603466A1 Apparatus for introducing gas into and circulating liquids in tanks |
| 08/06/1987 | DE3603123A1 Process for the biological removal of nitrate from water with minimal secondary treatment of the denitrified water |
| 08/06/1987 | DE3602827A1 Process and devices for the direct aerobic treatment of liquid organic wastes |
| 08/06/1987 | DE3602736A1 Process and device for the biological degradation of phosphorus from waste water |
| 08/05/1987 | EP0231036A1 Simultaneous oxidation of reduced S and N compounds |
| 08/05/1987 | EP0230894A2 Method of an apparatus for water treatment |
| 08/04/1987 | US4684469 Two component biocidal process |
| 08/04/1987 | US4684468 Process and installation for anaerobic digestion |
| 08/04/1987 | CA1225173A1 Method and apparatus for degrading of organic products, by-products and scraps in an anaerobic medium |
| 07/30/1987 | WO1987004424A1 Treatment system for landfill leachate |
| 07/30/1987 | WO1987004423A1 Effluent treatment |
| 07/29/1987 | CN86106032A Improved column packing |
| 07/28/1987 | US4683064 Process for decreasing the nitrate content in water |
| 07/22/1987 | EP0229624A2 Apparatus for removal of floating sewage from the surface of liquids |
| 07/22/1987 | EP0229387A1 Apparatus for water aeration |
| 07/22/1987 | EP0229386A1 Water aerator |
| 07/22/1987 | EP0229199A1 Film-flow packing for biological treatment of fluids |
| 07/22/1987 | EP0229145A1 Removing selenium from water |
| 07/22/1987 | EP0229132A1 Flooded biological film reactor for water treatment, with gas charging via a membrane. |
| 07/21/1987 | US4681851 Biologically active composition for purifying waste water and outgoing air |
| 07/21/1987 | US4681685 Fluidized bed reactor |
| 07/16/1987 | DE3639993C1 Appliance for the treatment of liquid manure |