| Patents for C02F 3 - Biological treatment of water, waste water, or sewage (46,453) |
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| 02/27/1992 | DE4027220A1 Biological breakdown of hydrogen sulphide in gas |
| 02/27/1992 | DE4026357A1 Mobile process and appts. for removing metals from solids - or aq. suspensions or liq(s) comprising units connected together |
| 02/26/1992 | EP0472250A2 Process for removing phoshates from water |
| 02/26/1992 | EP0472249A2 Process and apparatus for biological degradation of hydrogen sulphide |
| 02/26/1992 | EP0472223A1 Improved process for dissolving a gas in a liquid |
| 02/25/1992 | US5091315 Anaerobic fermentation |
| 02/25/1992 | US5091095 System for controlling drain system treatment using temperature and level sensing means |
| 02/25/1992 | US5091089 Adding white-rot fungi |
| 02/25/1992 | US5091083 Flotation separation system |
| 02/25/1992 | US5090242 Remote, pneumatic, continuous sensor of the liquid level in a vacuum tank |
| 02/25/1992 | CA1296163C Method and apparatus for the treatment of water, especially for the oxygen enrichment of water |
| 02/20/1992 | WO1992002151A1 A method of treating a biodegradable material |
| 02/20/1992 | DE4036348C1 Waste water treatment with improved efficiency - by mechanically cleaning and biologically treating before absorbing residual particles using e.g. active carbon |
| 02/20/1992 | DE4025778A1 Removing phosphate and organic phosphorus from waste water - by pptn. with alkaline stabilised alumina soln. obtd. by dissolving pptd. aluminium oxide or hydroxide in soln. of alkali |
| 02/20/1992 | DE4025645A1 Membrane module for passing gases in and out of liquids - has tubular membrane wound in spiral arrangement around open vertical frame members, reducing build=up of deposits on membrane |
| 02/18/1992 | US5089179 Floating aerator arrangement |
| 02/18/1992 | US5089137 Maximizing contact of wastewater |
| 02/13/1992 | DE4024947A1 Procedure for treatment of waste water - involves continuously monitoring flow rate, ph, temp. and compsn. in activated sludge tank to control water treatment process |
| 02/12/1992 | EP0470931A2 Soil and waste water treatment |
| 02/12/1992 | EP0470377A2 Diaphragm for gas-liquid contact, gas-liquid contact apparatus and process for producing liquid containing gas dissolved therein |
| 02/12/1992 | CN1058624A Method and apparatus for comprehensive treatment of waste from biological degumming of ramie |
| 02/12/1992 | CN1058575A Method for treating waste water containing discards from filature |
| 02/11/1992 | US5087377 High pressure oxygen-saturated water-treatment |
| 02/11/1992 | US5087354 Pressure sensors monitor algae population by measuring associate head loss; triggering device for washing sequence |
| 02/11/1992 | US5087353 Solar aquatic apparatus for treating waste |
| 02/11/1992 | US5087292 Recirculating molten metal in bath, ejecting near gas outlet |
| 02/06/1992 | WO1992001779A1 Fermentation vessel |
| 02/06/1992 | WO1992001636A1 Waste water treatment plant |
| 02/06/1992 | DE4024769C1 Treatment of sludge contg. toxic heavy metals - comprises treating with excess hydrochloric acid, concentrating by thermal evapn. and distilling |
| 02/06/1992 | DE4024529A1 Treating water contg. organic matter and nitrate, giving potable water - by ozone treatment giving assimilable cpds., and filtering through two layer fixed bed contg. heterotrophic microorganism |
| 02/06/1992 | CA2084090A1 Waste water treatment plant |
| 02/04/1992 | USRE33812 Diffuser for aeration basin |
| 02/04/1992 | US5085998 Immersing in liquid culture of phanerochaete strain for sufficient time period |
| 02/04/1992 | US5085809 Means for ozone treatment of water for water supply system |
| 02/04/1992 | US5085766 Filter for cleaning fluids |
| 02/04/1992 | CA2025773A1 Swimming pool water aerator |
| 02/04/1992 | CA1295270C Microbial degradation of hydrocarbons |
| 02/02/1992 | WO1992002466A1 Sanitation system |
| 01/29/1992 | EP0467969A1 Process for removal of organic pollutants from waste water. |
| 01/29/1992 | EP0229132B1 Flooded biological film reactor for water treatment, with gas charging via a membrane |
| 01/29/1992 | CN1058202A Technology for treatment of waste liquid pollution in small paper pulp mill |
| 01/29/1992 | CN1058158A Innocuous treatment and using method for rubbish |
| 01/28/1992 | WO1992002465A1 Treatment of a trickling-percolating filter |
| 01/28/1992 | US5084389 Reacting a biomass, hydrolysis and filtration |
| 01/28/1992 | US5084167 Oxidation ditch for treatment of waste water |
| 01/28/1992 | CA2066231A1 Treatment of a trickling-percolating filter |
| 01/28/1992 | CA1295058C Biological treatment of wastewater |
| 01/27/1992 | CA2046699A1 Continuous bacterial mutation process |
| 01/23/1992 | WO1992001223A1 Continuous rbcod measurement |
| 01/23/1992 | WO1992001046A1 Laccase production by recombinant organisms |
| 01/23/1992 | WO1992000920A1 Flexible partition |
| 01/23/1992 | WO1992000798A1 Improvements in or relating to flow control |
| 01/23/1992 | DE4023273A1 Sepn. of oils from waste water - uses appts. where anaerobic reaction in water is prevented by pumping air into sepg. tanks contg. circulated water |
| 01/23/1992 | DE4022552A1 Filter material for aerobic and anaerobic water process - has capillary network with dead=end pores forming zones for inducing biological action in flowing waste and polluted water |
| 01/22/1992 | EP0466973A1 Process and apparatus for biological clarification of water by aerobic sludge stabilisation, especially in small clarification plants |
| 01/22/1992 | EP0466957A1 Device for waste water treatment |
| 01/22/1992 | EP0270640B1 Fish basin for intensive fish-fattening and process for operating such a fish basin |
| 01/21/1992 | US5082475 Waste air purification process |
| 01/21/1992 | CA1294571C Process for carrying out microbiological fermentations in a device comprising a fixed system of an open cell foam as well as a device for carrying out such processes |
| 01/20/1992 | WO1992001637A1 Bioreactor |
| 01/15/1992 | CN2093030U Internal circulating biological fluidized bed |
| 01/14/1992 | WO1992000792A1 Method and device for purifying air |
| 01/14/1992 | US5080793 Apparatus and method for the simultaneous purification of air and water |
| 01/14/1992 | US5080782 Apparatus for bioremediation of sites contaminated with hazardous substances |
| 01/14/1992 | CA2086927A1 Method and device for purifying air |
| 01/10/1992 | WO1992000799A1 Substance carrying conglomerate |
| 01/09/1992 | WO1992000370A1 Oxalate degrading bacterium |
| 01/09/1992 | DE4021536A1 Device for cleaning lightly contaminated water - in which condensed vapours in diary industry are treated by bacteria in fixed filter bed in vessel with nutrient supply system |
| 01/09/1992 | DE4020044A1 Rotating body esp. waste water treatment for drum reactors - with mounting rings to which drum frame is bolted first welded to drum shaft and weld stress-received to reduce danger of fracture |
| 01/08/1992 | EP0465452A1 Microbes and their use to degrade n-phosphonomethylglycine in waste streams |
| 01/08/1992 | EP0465304A1 Process and apparatus for purification of water polluted by nitrogenous waste products |
| 01/08/1992 | EP0465131A2 Biocatalyst carrier for bioreactor and method of treatment with biocatalyst |
| 01/08/1992 | EP0465043A2 Ejector und its use in a process of aerobically treating water |
| 01/07/1992 | US5079166 Pseudomonas or host containing toluene monooxygenase genes from Pseudomonas |
| 01/07/1992 | US5078923 Aeration apparatus having a deicing mechanism and control circuit therefor |
| 01/07/1992 | US5078884 Anoxic ammonia oxidation |
| 01/07/1992 | US5078882 Bioconversion reactor and system |
| 01/07/1992 | US5078881 Decontamination process |
| 01/07/1992 | US5078880 Vortex desalination system |
| 01/07/1992 | US5078869 Clarifier cleaning apparatus |
| 01/07/1992 | CA2011920C Molded septic tank |
| 01/07/1992 | CA1294070C Bioconversion reactor |
| 01/02/1992 | EP0463902A1 Methode for removal of methylamines |
| 01/02/1992 | EP0463062A1 Bioslurry reactor for treatment of slurries containing minerals, soils and sludges. |
| 01/02/1992 | EP0293374B1 Effluent treatment |
| 01/02/1992 | DE4019577A1 Substrate body for activated sludge water-treatment tanks - composed of watertight closed-pored material, remains buoyant during operational periods |
| 01/01/1992 | CN1015232B Method and apparatus for widespread finely-bubbled aeration of liquids |
| 12/31/1991 | US5077399 Phosphinothricin-resistance gene |
| 12/31/1991 | US5077025 Process or purifying waste gases by scrubbing with an adsorbent suspension |
| 12/31/1991 | US5076929 Sedimentation and biodegration, then nitrification and acratio n |
| 12/31/1991 | US5076928 Oxic, anoxic and anaerobic processing; removal of phosphate pollution; denitrification; decomposition of organics |
| 12/31/1991 | US5076927 Fermentation by sulfur reducing bacteria; sulfiding, methanati on |
| 12/29/1991 | CA2045780A1 Biocatalyst carrier for bioreactor and method of treatment with biocatalyst |
| 12/27/1991 | EP0462225A1 Apparatus and method for stabilizing sludge |
| 12/26/1991 | WO1991019682A1 Improved method and apparatus for processing biodegradable organic material |
| 12/26/1991 | WO1991019681A1 A flow control element for use as a filter or gas diffuser |
| 12/26/1991 | WO1991019680A1 Rotating biological aquarium filter system |
| 12/25/1991 | CN1015167B Equipment for deep-well aeration treatment of waste water with low energy consumption |
| 12/24/1991 | WO1992000249A1 Fluid supply device |
| 12/24/1991 | US5075008 Process for high-load treatment of carbohydrate containing waste water |