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)
04/1998
04/16/1998DE19643364A1 Process to liberate especially heavy metals from polluted soil in modular bed
04/16/1998DE19642260A1 Waste water treatment in vessel containing bacteria and absorbent
04/16/1998CA2267159A1 Light expanded clay aggregates for phosphorus removal
04/16/1998CA2266495A1 Microbiological process for removing halogenated ethenes
04/15/1998EP0835846A2 A method of bio-aeration of waste water and a device for carrying out the method
04/15/1998EP0835845A1 Apparatus for aerobic biological treatment of aqueous organic wastes
04/15/1998EP0835225A1 Enzymatic method for the oxidative breakdown of fluorescent compounds
04/15/1998CN1178774A Method of purifying water and apparatus therefor
04/14/1998US5739031 Soil and water remediation and enhancement process and apparatus therefor
04/14/1998US5739028 Chromium (VI)-resistant strain of Shewanella alga
04/14/1998US5738807 Air bubble generating apparatus
04/14/1998US5738789 Method of purification of polluted underground water
04/14/1998US5738781 Household waste water treatment and recycling system
04/14/1998CA2052152C Denitrification systems and methods
04/08/1998EP0834476A2 Process and installation for the degradation of organic contaminants in waste waters
04/08/1998EP0834475A2 Process and installation for the degradation of organic contaminants in waste waters
04/08/1998EP0834474A2 Process for the discontinuous purification and installation for carrying out this process
04/08/1998EP0834473A1 Biological activator based on day 1 for septic tanks
04/08/1998EP0751913B1 Process and device for simultaneous biological elimination of phosphorus and nitrogen from waste water
04/08/1998CN1178513A Process for high concentrated waste water treatment using membrane separation
04/08/1998CN1178512A Method for utilising tyres to clean and/or fertilise water
04/08/1998CN1178479A Method of separating solids from liquids and/or separating emulsions
04/07/1998US5736049 Method and means for odor control in waste water lagoons
04/07/1998US5736048 Biodegradation of toxidc aromatic compounds and heavy meatals contamination of pond water by placing a silage of grass clipping and inoculation of pond with a blue-green algae and bacillus cerus microorganism
04/07/1998US5736047 Hybrid biological nutrient removal system
04/07/1998US5735934 Method for delivering a gas-supersaturated fluid to a gas-depleted site and use thereof
04/02/1998WO1998013308A1 Process for the treatment and decontamination of acid waters which contain dissolved metals and their conversion into fertilizers (pidra process)
04/02/1998WO1998013307A1 Immobilised porous ceramic (ipc) material for the biological purification of wastewater or natural water contaminated by xenobiotics
04/02/1998WO1998013306A1 Aeration pipe and method of making same
04/02/1998DE19625985A1 Processing recirculated water from separation stage in treatment plant
04/01/1998EP0832681A1 Apparatus for generating air bubbles in a liquid
03/1998
03/31/1998US5733741 Protein decomposing enzymes
03/31/1998US5733456 Environmental control for biological nutrient removal in water/wastewater treatment
03/31/1998US5733455 Wastewater treatment process
03/31/1998US5733454 Process and apparatus for the treatment of flowable waste
03/31/1998US5733453 Wastewater treatment system and method
03/31/1998US5733067 Method and system for bioremediation of contaminated soil using inoculated support spheres
03/31/1998CA2004299C Biological contactor for purifying water to produce drinking water and associated control method
03/26/1998WO1998011980A1 Membrane system for treating sanitary wastewater
03/26/1998DE19732789A1 Floating aerator having spray protection hood covering inlet and outlet
03/26/1998CA2266637A1 Membrane system for treating sanitary wastewater
03/25/1998EP0831151A1 Process and apparatus for measuring the nitrification-efficiency of activated sludge
03/25/1998EP0831064A2 Process for adjusting a mixture of microorganisms and nutrients in a biotechnological process, in particular an activated sludge process for waste water treatment
03/25/1998EP0831063A2 Device for releasing fine bubbles of gas into a liquid
03/25/1998EP0830317A1 Effluent treatment system
03/25/1998CN1176940A Method for treatment of organic sewerage
03/24/1998US5730884 Method of removing selenate ion from selenate ion-containing aqueous waste liquid
03/24/1998US5730784 Oxidation to sulfur dioxide
03/20/1998CA2215726A1 Device for fining bubbles contained in liquid
03/19/1998WO1998011028A1 Liquid effluent treatment plant and process
03/19/1998WO1998011027A1 Method for purifying carbon-containing pollution and denitrifying waste water in oxygenic medium
03/19/1998WO1998011026A1 Installation for biological cleaning, particularly of wastewater
03/19/1998WO1998011025A1 Biological disk
03/18/1998EP0829536A1 Carrier for bioreactor and method of producing the same
03/18/1998EP0829456A2 Sewage Treatment Plant
03/18/1998EP0829305A2 Flotation type separator
03/18/1998EP0828692A1 Novel method for the control of biodegradation
03/18/1998CN2276499Y Chemical fiber wrapped drill aerated conduit
03/18/1998CN1176634A Method and apparatus for the treatment of concentrated wastewater
03/18/1998CN1176228A Processing method of waste water from refined p-benzene dicarboxylic acid production
03/17/1998US5728577 Suitable for fermenting liquids, purifying household or industrial sewage using immobilized microorganisms
03/17/1998US5728300 Phytorecovery of metals using seedlings
03/12/1998WO1998009919A1 Microbial remediation reactor and process
03/12/1998WO1998009918A1 A process and apparatus for treating waste water
03/12/1998WO1998009718A1 Modular filtration system
03/12/1998DE19702521C1 Water treatment plant has cranked paddles lifting free-moving bodies
03/12/1998DE19640761C1 Waste water de-nitrification process
03/12/1998DE19636593A1 Anlage zur biologischen Reinigung insbesondere von Abwasser Plant for the biological treatment of wastewater in particular
03/12/1998DE19622348C1 Water treatment assembly
03/12/1998CA2264915A1 A process and apparatus for treating waste water
03/11/1998EP0827940A1 Air charger
03/11/1998EP0827777A1 Gas-liquid processing apparatus
03/11/1998EP0827430A1 Biotechnological purification of ground and water containing heavy metals
03/11/1998EP0827418A1 Self-cleansing filter
03/11/1998CN2276021Y Improved biological contact filler
03/11/1998CN1175933A Air charger for water purification
03/11/1998CN1175556A Facilities for treating waste water on large scale
03/11/1998CN1175554A Sewage treetment and use method for buildings
03/11/1998CN1175553A Method for removing heavy metals in flue gas absorption liquid
03/11/1998CA2215101A1 Bubble floating type separator
03/11/1998CA2214954A1 Slow sand filter
03/10/1998US5725885 Composition for enhanced bioremediation of oil
03/10/1998US5725772 Wastewater treatment system
03/10/1998US5725771 Process for enzyme pretreatment of drill cuttings
03/10/1998US5725770 Waste treatment plant and process
03/05/1998DE19635391A1 Effluent water treatment with biological phosphate elimination
03/04/1998EP0826640A2 A water oxygenating device
03/04/1998EP0826639A1 Biological treatment of wastewater
03/04/1998EP0826638A2 Apparatus for waste water purification
03/04/1998EP0826637A2 Water treatment plant for water from aquariums, swimming pools and fish ponds
03/04/1998CN2275579Y Efficient non-energy consumption device for treating domestic sewage
03/04/1998CN1174816A Sewage treating device
03/04/1998CN1174815A High-effect anaerobic treatment device for waste water and method thereof
03/03/1998US5723043 Filtering apparatus having positively buoyant and negatively buoyant particulate
02/1998
02/26/1998WO1998007839A1 Biodegradation of explosives
02/26/1998WO1998007831A1 Novel microorganism and method for environmental purification using the same
02/26/1998WO1998007664A1 Method of treating ammonia-comprising waste water
02/26/1998WO1998007663A1 Process and device for the biological purification of sewage
02/26/1998WO1998007662A1 Bioreactor
02/26/1998WO1998007661A1 Process for decomposing triiodobenzene derivatives
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