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)
01/1987
01/06/1987US4634526 Sidewall mounted clarifier
12/1986
12/31/1986WO1986007617A1 Method at water supply and sewerage system and system for water supply and sewerage
12/31/1986CN85105024A Water purification apparatus
12/31/1986CN85103841A 污水处理 Sewage
12/30/1986US4632759 Iron, aluminum, calcium or magnesium salts to conter toxic effects of fatty acid salts
12/30/1986US4632758 Anaerobic wastewater treatment system
12/30/1986US4632692 Process and installation for simultaneously producing compost and biogas from organic waste
12/30/1986EP0206690A1 Ground-water treatment
12/30/1986EP0205778A1 Sulphite pulping process for preparing cellulose pulp from lignocellulosic materials with recovery of the pulping chemicals
12/30/1986EP0205721A1 Vessel for anaerobic fermentation
12/30/1986EP0205496A1 Nitrification/denitrification of waste material
12/23/1986USRE32312 Reducing turbulence
12/23/1986US4631135 Reduce biofouling of system by providing support surface
12/23/1986US4631134 Process for the intermittent aeration of liquids and aeration device for use in such process
12/18/1986WO1986007287A1 A contact apparatus
12/17/1986CN86103733A Apparatus for liquid aeration
12/16/1986US4629565 Process for the biological treatment of sewage
12/16/1986US4629559 Sewage treatment
12/16/1986US4629126 Fluid diffuser
12/10/1986EP0204688A2 Aerating device for liquids
12/10/1986EP0204273A2 Process and apparatus for the removal of nitrate from surface water and ground water, especially from drinking water
12/09/1986US4627921 Treatment of water to lower the oxygen and the total organic carbon within the same
12/09/1986US4627917 Process for the anaerobic decomposition of organic substrate
12/03/1986EP0203549A2 Waste water treatment process
12/03/1986EP0203467A1 Process and plant for the treatment of oily emulsions
12/02/1986US4626992 Water quality early warning system
12/02/1986US4626354 Method for anaerobic treatment of high strength liquors
12/02/1986US4626353 Side skimmer for use in a channel
11/1986
11/26/1986EP0202626A2 Process for the reduction of the content of organic compounds in refuse and/or waste water
11/26/1986EP0202387A2 Integrated biological adsorption process for treating wastewater
11/25/1986US4624791 Method for improving bubble surface area exposure
11/25/1986US4624788 Method of biological purification of waste water
11/25/1986US4624781 Air diffusion device for aerating water with small bubbles
11/25/1986US4624626 Venturi odor dissipator
11/20/1986WO1986006712A1 Process for introducing oxygen into water and device for implementing the process
11/20/1986EP0201924A2 Process and apparatus for waste water purification
11/20/1986EP0201484A1 Method and device for the purification of water and special waste
11/18/1986US4623492 Aerator for liquids
11/18/1986US4623468 Dispersant containing nutrient for microorganism, biodegradation
11/18/1986US4623465 Removal of combined organic substances from aqueous solutions
11/18/1986US4623464 Polychlorinated biphenyls
11/12/1986EP0201278A2 Biochemical conversion processes
11/12/1986EP0200875A2 Process and apparatus for waste water purification by the activated-sludge process
11/12/1986EP0083586B1 Apparatus for fermentation of organic material
11/12/1986CN86101931A Oxygen free fermentor
11/12/1986CN85205255U Fluidic device for magnetizing fluid
11/11/1986US4622148 Aquarium filter system
11/11/1986US4622147 Plant for the anaerobic purification of waste water
11/11/1986US4622139 Aerator device
11/11/1986US4622134 Apparatus for treating sewage
11/06/1986WO1986006430A1 Cesspool
11/05/1986EP0200486A2 Immobilization of biological cells in polytetrafluoroethylene matrix
11/04/1986US4620931 Three phase fluidized bed water purifying process
11/04/1986US4620930 Process for rapidly determining biological toxicity of wastewater
11/04/1986US4620929 Water treatment using filter containing bacteriophilic nutrients
11/04/1986US4620928 Adding air or oxygen to obtain residual oxygen content
11/04/1986US4620925 Aerobic sewage system and aerating unit therefore
11/04/1986US4620895 Apparatus for manufacturing a square filler for water treatment
11/04/1986US4620817 Underground discharge for downspouts and sump pumps
10/1986
10/28/1986US4619763 Purification of drinking water
10/28/1986CA1213233A1 Process for producing isopropyl alcohol from cellulosic substrates
10/23/1986WO1986006060A1 Device for the continuous introduction or extraction of gases into/from liquids
10/22/1986EP0198451A1 Hollow element for biological waste water treatment
10/22/1986EP0198073A1 Device for introducing a gas into a liquid.
10/22/1986CN85204794U Filler for biological filter tank
10/21/1986US4618430 Using gas to float waste to surface, then blowing into outlet
10/21/1986US4618427 Method of treating and breaking up a liquid with the help of centripetal force
10/21/1986US4618426 Retrievable jet mixing systems
10/21/1986US4618421 Conducting sewage or other wastes downstream in submerged tubes to disposal means
10/21/1986US4618418 Fluidized bed reactor
10/15/1986EP0197213A1 Treatment of a medium for the reduction of biofouling
10/15/1986CN85102347A Process and device for the anaerobic decomposition of organic substrate
10/14/1986US4617123 Processes and installations for treating waste waters issuing from the manufacture of sauerkraut
10/14/1986CA1212790A1 Bioreactor
10/09/1986WO1986005771A1 Method of treating active sludge in waste water
10/09/1986WO1986005770A1 An apparatus for the purification of water, waste water in particular, by a biological oxidation method
10/08/1986EP0197024A1 Plant for aerobic biological waste water treatment
10/08/1986EP0196506A2 Process and apparatus for the separation of sulfate from waste water
10/08/1986EP0196402A2 Removal of dioxins, PCB's and other halogenated organic compounds from wastewater
10/08/1986EP0196338A1 Water treatment apparatus
10/08/1986CN86101481A Biochemical process for treating waste water from been brewery
10/08/1986CN85102554A Method and apparatus improvement for treatment pickles produced waste water
09/1986
09/30/1986US4614596 Roatation, varying velocities
09/30/1986US4614589 Method and apparatus for biological aerobic wastewater treatment
09/30/1986US4614588 Method for sulfide toxicity reduction
09/30/1986US4614587 Wastewater treatment method
09/30/1986US4614584 Settling chamber and plurality of drain outlets
09/24/1986EP0195214A2 Method for the multistage treatment of radioactive waste water
09/24/1986EP0195005A1 Method and arrangement for growing microorganisms and causing contact between gas and/or liquid medium and contact elements
09/24/1986CN86101565A Process and apparatus from waste water remove sulphates
09/24/1986CN86101142A Method of using microorganism transform in removing the intrate exposure to the gas hydrogen
09/23/1986US4613434 Device for treatment of wastewater by means of anaerobic fermentation
09/23/1986US4613433 Anaerobic fermentor
09/17/1986EP0064960B1 A plant for purifying contaminated air
09/16/1986US4612115 Floating bed reactor
09/16/1986CA1211366A1 Fluid diffuser for gases and liquids
09/12/1986WO1986005221A1 Method for natural reduction of some injurious substances in upper suboil water magazines
09/12/1986WO1986005209A1 Method for the monitoring and control of microbial populations
09/12/1986WO1986005200A1 Method and plant for the degradation in an anaerobic medium of organic products, by-products and waste of human, animal and/or vegetal origin
09/10/1986EP0193999A1 Plant for the anaerobic purification of waste water
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