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