Patents for C02F 3 - Biological treatment of water, waste water, or sewage (46,453) |
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06/16/1993 | CN1073155A Micro porous aeration head and its making method |
06/16/1993 | CN1021238C Method and apparatus for comprehensive treatment of waste from biological degumming of ramie |
06/15/1993 | US5219750 Aerobic cultivation of microorganism while supplying cyanides; recovering cells containing enzyme |
06/10/1993 | WO1993011421A1 Method and apparatus for monitoring a supply of gas |
06/10/1993 | WO1993011076A1 Method and apparatus for batchwise biological and chemical purification of soil water |
06/10/1993 | WO1993011075A1 Process and apparatus for removal of organic pollutants from waste water |
06/10/1993 | WO1993010890A1 A reactor |
06/10/1993 | WO1993004770A3 Aerator for a liquid-filled basin |
06/09/1993 | EP0545557A2 Multiple zone batch treatment process |
06/09/1993 | DE4140281A1 Animal body and manure disposal - uses continuous steam sterilising with air and water cleaning, to give virtual waste-free operation |
06/09/1993 | CN1073048A High efficiency energy conversion and treatment of organic waste |
06/08/1993 | US5217788 Corrugated sheet assembly |
06/08/1993 | US5217617 Water treatment |
06/08/1993 | US5217616 Aerobic biodegradation using porous biomass in fixed bed support |
06/08/1993 | US5217615 Bacterial leaching process and composition |
06/08/1993 | US5217609 Combination sludge collector, aerator, and return pump |
06/06/1993 | CA2061431A1 Process for pig slurry |
06/03/1993 | DE4224912A1 Reaktor Reactor |
06/03/1993 | DE4213603C1 Treating waste water by addn. of (di:hydro)folic acid or salts - activating bio:film on inner wall of pipes to accelerate breakdown of components in the water |
06/03/1993 | CA2082085A1 Multiple zone batch treatment process |
06/02/1993 | EP0544226A1 Process for relieving the clarifier |
06/02/1993 | CN1072661A Treatment process of organic waste water |
06/02/1993 | CN1072659A Drain treatment apparatus |
05/27/1993 | WO1993009671A1 A method to combat microbes |
05/27/1993 | DE4138695A1 Transportable continuous sewage treatment |
05/27/1993 | DE4138599A1 Fluidised zone biochemical reactor for liquids contg. solid substrates - has stand-pipe and two lower tangential inlets, with turbulent flow produced in stand-pipe and substrate held in fluidised condition |
05/26/1993 | EP0543579A1 Removing pesticide residues from water |
05/26/1993 | EP0543457A1 Method for the treatment of sewage and installation to be used for this method |
05/26/1993 | EP0543358A1 Arrangement for the cleaning of polluted ground water |
05/26/1993 | EP0542755A1 Rotating biological aquarium filter system. |
05/25/1993 | US5213717 Apparatus for fumigating waste waters |
05/25/1993 | US5213681 Method for biologically removing nitrogen from wastewater |
05/19/1993 | EP0542162A1 Process for waste water disposal |
05/19/1993 | DE4214004C1 Bio-film reactor for biological treatment of waste water - comprising vertical reaction chamber contg. perforated impact wall to separate biomass |
05/19/1993 | DE4141832C1 Waste water process and appts. treats mixt. of activated and primary sludges |
05/19/1993 | DE4137905A1 Controlling sludge recirculating in biological sewage treatment plant - by determining parameters of active and non-active sludge components, by analysis, sepg. components so that only active material is recirculated |
05/19/1993 | DE4137759A1 Appts. to improve flow in deeper layers of inland and coastal water pref. by aeration - has mixer within rising tube and insertion feed to deliver medium and gas under pressure into lower water levels |
05/19/1993 | DE4136597A1 Compact water aeration unit - has mixing vessel filled with porous material which forms air cushion which is mixed with water, and wt. to keep unit in position |
05/19/1993 | DE4131714A1 Nutrient concentrate contg. cpds. of phosphorus and nitrogen in carrier contg. glycerol and glycerol ester |
05/19/1993 | CN2133577Y Intemittent waste water treating device by active mud method |
05/19/1993 | CN1020714C Method and apparatus for disposing waste water by biological fluidized bed with sponge carrier |
05/18/1993 | US5212090 Collecting gases in containers with strips |
05/18/1993 | US5211848 Process for the microbial detoxification of toxic streams |
05/18/1993 | US5211847 Denitrification methods |
05/18/1993 | US5211844 Wastewater treating biological film tank |
05/18/1993 | US5211508 Total water circulation system for shallow water areas |
05/13/1993 | WO1993008922A1 Process for controlling and/or eliminating undesired viscosity and csb values in paint coagulation liquids |
05/13/1993 | DE4137140A1 Determining gaseous metabolites and prods. in (bio)chemical processes - by measuring vol. changes caused by variation in internal pressure, opt. with selective absorption of partic. components, e.g. for monitoring water denitrification |
05/13/1993 | DE4136865A1 Overpressure eddy reactor - has lower connection at cylindrical vessel for the eddy jet which forms a closed circuit with the lower outlet |
05/12/1993 | EP0540563A1 Waste water treatment plant. |
05/12/1993 | CN2132743Y Miniature sewage disposal device with filter bed |
05/12/1993 | CN2132742Y Float biochemical composite ball |
05/12/1993 | CN1071899A Process and apparatus for two-stage fermentation of corn starch contg.waste water |
05/12/1993 | CN1071898A Method for high-speed microvortex of active sludge |
05/05/1993 | EP0539624A1 Contactor for use in an apparatus for treatment of organic waste water |
05/05/1993 | EP0539459A1 Method and device for purifying air |
05/05/1993 | EP0539430A1 Bioreactor. |
05/05/1993 | CN1071648A Apparatus for treating organic waste and sewerage |
05/04/1993 | US5207912 Mixing with a bulking agent for aerobic treatment of sludge |
05/04/1993 | US5207911 Method for the breakdown and recycling of solid urban waste by anaerobic fermentation |
05/04/1993 | US5207899 Rotating bacterial tablet dispenser for an underground wastewater denitrification system |
04/29/1993 | WO1993008263A1 Mobile waterborne bioreactor process |
04/29/1993 | WO1993008129A1 Chemical oxidative process for purifying highly contaminated waste water |
04/29/1993 | WO1993008128A1 Method and apparatus for removing manganese from water |
04/29/1993 | CA2122021A1 Method and apparatus for removing manganese from water |
04/28/1993 | EP0538954A1 Aerobic purification installation |
04/28/1993 | EP0538928A1 Method and device for cleaning soil polluted by at least one heavy metal |
04/27/1993 | US5206206 Method of pre-treating peat for use in biofilters for wastewater treatment and use thereof |
04/27/1993 | US5206168 Method for small system wastewater denitrification |
04/27/1993 | US5205936 Sequencing batch reactors |
04/27/1993 | US5205935 High performance fixed film bioreactor |
04/27/1993 | CA1316860C Microbial degradation of trichloroethylene |
04/27/1993 | CA1316835C Separation of ash from regenerated adsorbent |
04/24/1993 | CA2081148A1 Aerobic purification installation |
04/22/1993 | DE4134124A1 Biological sewage cleaning - has aeration units in the recirculating basin operated according to ammonia and oxygen@ content |
04/21/1993 | EP0537595A2 Process for the degradation of organic compounds in sewage sludge |
04/21/1993 | EP0537563A1 Improved waste treatment oxidation operations |
04/21/1993 | EP0537210A1 Continuous rbcod measurement. |
04/21/1993 | CN1071146A Method for control of biofouling |
04/20/1993 | US5204001 Membrane bioreactor system for treating synthetic metal-working fluids and oil-based products |
04/15/1993 | WO1993007089A1 Method of controlling wastewater purification plants using quality evaluation of measuring data |
04/15/1993 | WO1993007088A1 Method of controlling wastewater purification plants using multiple control functions |
04/15/1993 | WO1993006953A1 Bio-slurry reaction system and process for hazardous waste treatment |
04/15/1993 | DE4212196A1 Low emission waste free treatment of agricultural by prods. - by continuous prodn. including solids sepn. filtration and reverse osmosis, with recycling of water |
04/15/1993 | DE4133954A1 Appts. for biological elimination of phosphorus and nitrogen from waste water - includes storage, 1st denitrification, phosphorus liberation, 2nd two=part denitrification, nitrification, aeration and post clarification tanks |
04/14/1993 | EP0536241A1 Fluid supply device. |
04/14/1993 | CN1070895A Biological oxide sewage treatment device |
04/13/1993 | US5202027 Secondary sewage treatment system |
04/12/1993 | WO1993007333A1 Method of treating wastewater in pulp bleaching |
04/12/1993 | CA2098279A1 Method for treating liquid waste after pulp bleaching |
04/10/1993 | WO1993007092A1 Membrane bioreactor system for treating synthetic metal-working fluids and oil-based products |
04/07/1993 | EP0536046A2 Microorganism belonging to the genus flavobacterium, hydrocarbon emulsifier and solubilizer and separation method for organic-solvent tolerant microorganism |
04/07/1993 | EP0536017A1 Process and installation for biological waste water treatment |
04/07/1993 | EP0535301A1 Method for the control of biofouling |
04/07/1993 | EP0535197A1 System for separating biological sludge from purified water. |
04/07/1993 | EP0527751A4 Modular clarifier with integral flocculator |
04/07/1993 | EP0383789B1 A process for in situ biodegradation of hydrocarbon contaminated soil |
04/07/1993 | EP0323970B1 Sewage treatment |
04/07/1993 | CN2129285Y Train-tube type aerator |
04/06/1993 | US5200343 Method for microbial dehalogenation of haloaliphatic compounds using a sulfate reducing bacteria, desulfomonile tiedjei |