| Patents for C02F 3 - Biological treatment of water, waste water, or sewage (46,453) |
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| 04/15/1987 | EP0217962A1 Method of treating active sludge in waste water |
| 04/15/1987 | EP0217854A1 Method for the monitoring and control of microbial populations. |
| 04/15/1987 | CN86106673A Gas breaking out device and treating method for organisms containing oxygen |
| 04/14/1987 | US4657875 Articles of porous glass and process for preparing the same |
| 04/14/1987 | US4657677 Equipment for enhanced mass transfer and control of foaming in chemical and biochemical processes |
| 04/09/1987 | DE3534957A1 Process and plant for denitrifying drinking water |
| 04/09/1987 | DE3534605A1 Process for the further processing of raw sludge taken off from a biological waste water (effluent) purification plant |
| 04/09/1987 | DE3534604A1 Process and plant for the further processing of raw sludge taken off from a biological waste water (effluent) purification plant |
| 04/09/1987 | DE3534603A1 Process for the further processing of raw sludge taken off from a biological waste water (effluent) purification plant |
| 04/08/1987 | EP0217739A2 Process and apparatus for conditioning and disinfecting sewage sludge |
| 04/08/1987 | EP0217682A1 Packing device for a biological waste water treatment plant |
| 04/08/1987 | EP0216872A1 Device for the continuous introduction or extraction of gases into/from liquids. |
| 04/08/1987 | CN85107219A Apparatus for increasing putting gaseous medium into liquid medium |
| 04/07/1987 | US4656138 Cultivating microbiological substances |
| 04/07/1987 | US4655926 Process of treating effluent from a pulp or papermaking operation |
| 04/07/1987 | US4655925 Activated sludge method |
| 04/07/1987 | US4655924 Process for preparing biomass attached to a carrier |
| 04/07/1987 | US4655918 Apparatus for cleaning waste water |
| 04/07/1987 | CA1220162A1 Subjecting cleaned waste water to anodic oxidation, flocculation, and biological treatment |
| 04/07/1987 | CA1220130A1 Process for the purification of water |
| 04/02/1987 | DE3534420A1 Appliance for the treatment of liquid manure or liquid dung |
| 04/02/1987 | DE3534244A1 Process for the biological purification of organically polluted waste waters |
| 04/01/1987 | EP0216433A2 Process for the depuration treatment of effluent waters |
| 04/01/1987 | EP0216069A2 Process for water oxygenation |
| 04/01/1987 | EP0215988A1 Apparatus for anaerobic digestion of organic waste |
| 03/31/1987 | US4654308 Bioreactor |
| 03/31/1987 | US4654147 Indicators, signals |
| 03/26/1987 | WO1987001690A1 Method and device for the oxygen enrichment of waters |
| 03/26/1987 | WO1987001689A1 Device for the oxygen enrichtment of liquids |
| 03/25/1987 | EP0215558A2 Improved column packing |
| 03/25/1987 | EP0215149A1 Circulation reactor |
| 03/24/1987 | US4652374 Hydrolysis-acidification phase; methane fermentation phase |
| 03/24/1987 | US4652371 Integral clarifier |
| 03/19/1987 | DE3532948A1 Rotating biological contactor |
| 03/19/1987 | DE3532048A1 Process for improving a substrate permeated with organic solid particles and device for carrying out the process |
| 03/18/1987 | EP0214860A2 Acceleration valve and motionless mixer |
| 03/18/1987 | CN85106555A Apparatus for purifying water, comprising an upflow reactor with an influent distribution system to be connected to a central water supply system |
| 03/18/1987 | CN85106508A Anaerobic purifying apparatus for wasted water |
| 03/18/1987 | CN85106421A Improvement of anaerobic ferment devices and methods |
| 03/17/1987 | US4650585 Adjustment of biomass relative to load |
| 03/17/1987 | US4650577 Apparatus for treating and purifying waste water |
| 03/17/1987 | CA1219384A1 Waste water treatment |
| 03/12/1987 | DE3531178A1 Plant for biological waste water purification |
| 03/11/1987 | EP0213691A2 A bioconversion reactor |
| 03/11/1987 | EP0213123A1 Polyurethane foam and a microbiological metabolizing system |
| 03/11/1987 | CN86202356U Multilevel biological contact oxidation tower |
| 03/11/1987 | CN85106350A Aerobic process for two-stages treating of high loading waste water |
| 03/05/1987 | DE3531070A1 Plant for the purification of waste water having an adsorption tank and intermediate clarifying tank |
| 03/05/1987 | DE3531050A1 Plant for purifying highly concentrated waste water |
| 03/04/1987 | EP0213012A2 Fluidized-bed reactor for the biological treatment of water |
| 03/04/1987 | EP0212560A2 Process for reducing the affection of ground water by alcohols |
| 03/03/1987 | US4647540 Automatic observation system for microorganisms and the like |
| 02/26/1987 | WO1987001109A1 Post-clarification device |
| 02/26/1987 | DE3605260A1 Apparatus for injection of gas into liquids |
| 02/26/1987 | DE3529668A1 Nachklaervorrichtung Post-clarification |
| 02/25/1987 | EP0211685A2 Ejector, paticularly for the neutralization of aqueous alkaline solutions by carbon dioxide |
| 02/25/1987 | EP0211546A1 Analog enrichment decontamination process |
| 02/25/1987 | EP0211451A1 Method and plant for the anaerobic purification of waste water |
| 02/25/1987 | EP0211082A1 Material and method of manufacturing same, and method of protecting normal surfaces and method of constructing normal frames using same material |
| 02/25/1987 | CN85106053A Device for preventing pipe of air diffuser from clogging |
| 02/24/1987 | US4645603 Liquid aeration device and method |
| 02/24/1987 | US4645592 Microorganism wastewater treatment; sequencing batch reactors |
| 02/17/1987 | US4643852 Gas-liquid transfers; for decomposition of biological wastes or carbonation of beverages |
| 02/17/1987 | US4643830 Process for operating a total barrier oxidation ditch |
| 02/17/1987 | US4643743 Pressure swing adsorption process for supplying oxygen under variable demand conditions |
| 02/10/1987 | US4642187 Systems for the treatment of organic material and particularly sewage sludge |
| 02/05/1987 | DE3526820A1 Apparatus for generating biogas |
| 02/04/1987 | EP0210493A2 Aquous suspensions of agglomerates, their preparation and use |
| 02/04/1987 | EP0210479A2 Process for separating clarified liquid from a biological mass obtained from the biological purification of waste water |
| 02/04/1987 | EP0210478A2 Process for the preparation of anionically modified polyurethane (urea) masses containing fillers, polyurethane (urea) masses obtained and their use |
| 02/04/1987 | EP0210218A1 A process for the biological treatment of sewage |
| 02/03/1987 | CA1217583A1 Pumpless clarifier apparatus and process for operation thereof in combination with a draft tube circulator/aerator |
| 02/03/1987 | CA1217582A1 Process and device for maintaining a fine dispersion of gases in liquids |
| 02/03/1987 | CA1217581A1 Process and apparatus for the biological treatment of wastewater |
| 01/31/1987 | CN85101549A Microorganism porous inorganic carrier and method of fixing microorganism on preferable carrier |
| 01/29/1987 | WO1987000564A1 USE OF rLDMTM 1-6 AND OTHER LIGNINOLYTIC ENZYMES |
| 01/29/1987 | WO1987000517A1 Flooded biological film reactor for water treatment, with gas charging via a membrane |
| 01/29/1987 | DE3525513A1 Rotating body, in particular immersed drum reactor |
| 01/28/1987 | EP0209877A2 Process and apparatus for the biological purification of waste water |
| 01/28/1987 | EP0209790A2 Carrier materials containing polymer-bound fillers, process for their manufacture and their use |
| 01/27/1987 | US4639340 Dissolving gas in a liquid |
| 01/24/1987 | CN86102900A Process of two stage treatments of waste water from puep mill |
| 01/22/1987 | DE3525712A1 Process for reprocessing regenerates from adsorber resins |
| 01/21/1987 | EP0209095A2 Process and apparatus for fumigation |
| 01/20/1987 | CA1216810A1 Process and equipment for purifying waste air |
| 01/17/1987 | CN85102252A Method and apparatus for the treatment of fur making wastewater |
| 01/15/1987 | WO1987000161A1 Removing selenium from water |
| 01/15/1987 | DE3623242A1 Process for treating highly polluted and organically degradable nitrogen-rich effluents |
| 01/15/1987 | DE3524404A1 Water aeration pipe |
| 01/15/1987 | DE3524078A1 Process for continuously transporting coke dust into a settling tank |
| 01/14/1987 | EP0208303A2 Process and apparatus for the anaerobic biological treatment of organic polluted liquids and/or liquid-solid mixtures |
| 01/14/1987 | EP0208253A1 Process and apparatus for the biological purification of waste water |
| 01/14/1987 | CN85105313A System to clear particles from outlet in activated sludge process |
| 01/08/1987 | DE3534163A1 Waste water purification plant |
| 01/08/1987 | DE3524364A1 Process and apparatus for treating water |
| 01/08/1987 | DE3524029A1 Process and apparatus for treating waste water in storage reservoirs |
| 01/08/1987 | DE3522241A1 Plastic packing |
| 01/07/1987 | EP0207693A2 Aquarium filter system |
| 01/06/1987 | US4634672 Waste water treatment |
| 01/06/1987 | US4634534 Modular plastic packing for the biological treatment of waste waters by percolation |