Patents
Sitemap › C02 - Treatment of water, waste water, sewage, or sludge › C02F - Treatment of water, waste water, sewage, or sludge › C02F 3 - Biological treatment of water, waste water, or sewage
Patents for C02F 3 - Biological treatment of water, waste water, or sewage (46,453)
07/1987
07/16/1987DE3600478A1 Cleaner for water aerators
07/16/1987DE3600406A1 Process and process arrangement for the intake and partial air saturation of untreated water for flotation plants
07/15/1987EP0228520A1 Separator, particularly for fats from water
07/14/1987US4680111 Sewage treatment equipment with activated sludge process beds
07/14/1987CA1224171A1 Biologically active composition for purifying waste water and outgoing air
07/14/1987CA1224170A1 Process for the anaerobic purification of waste water that contains furfural, the bacteria required to do this, and their production
07/09/1987DE3600232A1 Disc-like water aerator
07/08/1987EP0227657A1 Method at water supply and sewerage system and system for water supply and sewerage
07/08/1987CN85109440A Gas-liquid circulation bioreactor
07/07/1987US4678582 Biological living-filter system
07/07/1987US4678567 Activated sludge process bed
07/01/1987EP0227081A2 Process and apparatus for biologically treating water, preferably presettled waste water
07/01/1987EP0226787A2 Process for treating sludges containing heavy metals
07/01/1987EP0226715A2 Process and apparatus for the biological denitrification of water
07/01/1987EP0226667A1 Process for reducing the nitrate content in water
06/1987
06/30/1987US4676934 Structured WV packing elements
06/30/1987US4676907 Biological filtration process
06/30/1987US4676906 Hybrid high rate anaerobic treatment process
06/30/1987US4676892 Hollow reactor for biological waste-water purification
06/25/1987DE3642232A1 Vortex protection device and use thereof in a gas-introduction apparatus
06/25/1987DE3628909A1 Process for the biological waste water purification and multiple-chamber unit for carrying out the process
06/24/1987EP0226373A1 A diffuser device
06/24/1987EP0225965A2 Method of treating waste water and equipment therefor
06/23/1987US4675103 Film-flow packing for biological treatment of fluids
06/19/1987DE3544382A1 Verfahren zur sauerstoffversorgung von bioreaktoren und vorrichtung zur durchfuehrung des verfahrens und die anwendung der vorrichtung Process for the oxygen supply of bioreactors and apparatus for performing the method and the application of the device
06/19/1987DE3532501A1 Vorrichtung zur sauerstoffanreicherung von fluessigkeiten Apparatus for oxygen enrichment of liquids
06/18/1987WO1987003615A2 Process for supplying oxygen from fermentation plant and device for implementation of the process
06/18/1987WO1987003575A1 Method and plant for the recovery of energy from waste and residues
06/18/1987WO1987003574A1 Process and plant for purifying waste water
06/16/1987US4673505 Inorganic azides extend activity of waste treatment bacteria
06/16/1987US4672691 Bulk volume fermenter
06/11/1987DE3543432A1 Anlage fuer die biologische aufbereitung von abwasser Plant for the biological treatment of wastewater
06/11/1987DE3543408A1 Process for sewage purification using activated sludge
06/10/1987EP0225237A1 Device for treating liquids by hydrokinetic injection
06/10/1987EP0225201A1 Textile packing as a carrier for biological conversion and phase separation
06/10/1987EP0224801A2 Sewage oxygenating device
06/10/1987EP0224762A2 Reaction cell
06/10/1987EP0224648A2 Sewage oxygenating device
06/10/1987CN86105710A Method of treating waste water and equipment therefor
06/09/1987US4671879 Process for reducing the nitrate content in water
06/09/1987CA1222839A1 Process and apparatus for the continuous anaerobic decomposition of organic compounds
06/04/1987DE3602944C1 Process and plant for the purification of waste water containing poorly degradable substances
06/03/1987EP0224459A2 Impeller apparatus
06/03/1987EP0223778A1 Cesspool
06/02/1987USRE32429 Production of non-bulking activated sludge
06/02/1987US4670149 Bacterial incubator and method of use
06/02/1987US4670140 Fixed bed reactor column for anaerobic decomposition processes
05/1987
05/27/1987EP0223280A1 Multistage watertreatment system for wastewater under anaerobe conditions
05/27/1987EP0222937A1 Apparatus and method for treatment of waste water
05/27/1987EP0222799A1 Process for introducing oxygen into water and device for implementing the process.
05/26/1987US4668443 Parallel, vertical corrugated sheets for gas liquid contact; heat transfer
05/26/1987US4668442 Column packing
05/26/1987US4668387 Deep submergence rotating biological contactor apparatus
05/21/1987WO1987002907A1 Centrifugal oxygenator for treatment of waste water and system
05/19/1987US4666611 Angled scoops in plane which is twisted; less drive power needed
05/19/1987US4666606 Xeronine
05/19/1987US4666605 Adding acid to remove inhibitors
05/19/1987US4666593 Packing device for an installation for the biological treatment of waste waters
05/14/1987DE3631817A1 Trickle-film reactor, without a nozzle plate, for the continuous elimination of dissolved water constituents
05/14/1987DE3534716A1 Process for the biological denitrification of water and apparatus for carrying out this process
05/13/1987EP0221354A1 Process using a screw aerator for waste water aeration
05/12/1987US4664805 Analog enrichment decontamination process
05/12/1987US4664804 Absorption by anaerobic sludge
05/12/1987US4664803 Anaerobic treatment of wastewater
05/12/1987US4664795 Two-stage waste water treatment system for single family residences and the like
05/12/1987US4664794 Fluid filtration, removal of nitrates
05/12/1987US4664680 Pressurized stream supersaturated with oxygen
05/12/1987CA1221777A1 Barrier oxidation ditch having increased flow efficiency and oxygen transfer efficiency
05/06/1987EP0220647A1 Sludge restructuring and conversion method
05/06/1987EP0220345A1 Water aeration apparatus
05/05/1987US4663089 Diffused bubble aeration system
05/05/1987US4663047 Process for purifying waste water
05/05/1987US4663046 System to clear particles from outlet in activated sludge process
05/05/1987US4663044 Denitrification, dephosphorization
05/05/1987US4663043 Method of treating peroxide-containing wastewater
05/05/1987US4663039 Apparatus for removal of oil from water and adsorbents using glycolipids
05/05/1987US4663038 Wastewater treatment
05/05/1987US4662900 Method for biological treatment of waste gases
05/05/1987CA1221478A1 Apparatus for the production of methane
04/1987
04/30/1987DE3538183A1 Waste water treatment plant
04/29/1987EP0220142A1 A sewage-water purifying process
04/29/1987CN86105192A False single cell 186 handling methanol waste water
04/23/1987WO1987002349A1 Heater for input sludge to a biogas reactor
04/23/1987DE3537591A1 Unit for purifying the water in aquaria
04/23/1987DE3537256A1 Process and plant for waste water purification and/or sewage sludge disposal
04/23/1987DE3536507A1 Water aeration apparatus
04/21/1987US4659485 Method and apparatus for aerating flowing water raceways
04/21/1987US4659471 Method of controlling an anaerobic treatment process
04/21/1987US4659464 Sewage treatment
04/21/1987US4659463 System to remove contaminants from water
04/21/1987CA1220864A1 Water quality early warning system
04/21/1987CA1220739A1 Two component biocidal system
04/16/1987DE3536494A1 Apparatus for clarifying contact water
04/16/1987DE3533569A1 Aeration blowing head and aeration bodies for activating waste water and liquid manure sludge
04/15/1987EP0218417A1 Structured "WV" packing elements
04/15/1987EP0218331A2 Anaerobic treatment of high strength liquors
04/15/1987EP0218316A2 Side skimmer
04/15/1987EP0218289A1 Method and installation for the purification of liquid, in particular waste water, according to the activated sludge method
04/15/1987EP0218253A2 Process and aerator apparatus for aerobic biological treatment
04/15/1987EP0218066A1 Wastewater purification process
1 ... 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 ... 465