| Patents for C02F 3 - Biological treatment of water, waste water, or sewage (46,453) |
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| 04/26/2000 | CN1251354A Anaerobic treatment device for organic waste water |
| 04/26/2000 | CN1051749C Cage type elastic stereo suspending filler |
| 04/25/2000 | US6054048 Water purification apparatus |
| 04/25/2000 | US6054044 Apparatus and methods for wastewater treatment from high volume livestock production |
| 04/20/2000 | WO2000021891A1 Treatment of water containing carbonaceous solids |
| 04/20/2000 | WO2000021890A1 Cyclic aeration system for submerged membrane modules |
| 04/20/2000 | WO2000021635A1 Slow sand filter for use with intermittently flowing water supply and method of use thereof |
| 04/20/2000 | DE19846804A1 In situ ground water decontamination process operates without pumps and the associated energy costs |
| 04/20/2000 | DE19845207A1 New enzyme composition useful for anaerobic digestion of sewage sludge, comprises at least three different enzymes or enzyme activities and surfactants and/or degradation promoters |
| 04/19/2000 | EP0994076A2 Method and system for purification of waste water |
| 04/19/2000 | EP0993420A1 Device for mixing and aerating liquids |
| 04/19/2000 | EP0946433B1 Method for eliminating phosphorus contained in effluents |
| 04/19/2000 | EP0877721B1 Method for treating aqueous liquid effluents containing organic and inorganic materials to enable recycling thereof |
| 04/19/2000 | CN2374543Y Submerging high oxygen dissolving aerating stirrer |
| 04/19/2000 | CN2374542Y Combination waste water treatment unit |
| 04/19/2000 | CN1251080A System for purifying domestic household effluent |
| 04/19/2000 | CN1250752A Biologic monitor process for nitrification of nitrogen |
| 04/19/2000 | CN1250751A Frame-type woven high-molecular biomembane as filler in sewage treatment |
| 04/19/2000 | CN1250750A Water purification equipment |
| 04/19/2000 | CN1250686A Spiral composite filler |
| 04/19/2000 | CN1250682A Equipment for agitating liquid in reactor and at same time jetting gas into said liquid |
| 04/19/2000 | CN1051531C Fixed-bed bioreactor and carrier bodies for purifying fluids |
| 04/18/2000 | USRE36660 Having flow means for temporarily maintaining gravity fed fluid flow through portion of distribution network after termination in fluid flow from inlet |
| 04/18/2000 | US6051411 Microorganisms immobilized in chitosan crosslinked with lignosulphonate for purification of waste water |
| 04/18/2000 | US6051130 Bioreactor for remediation of pollutants with butane utilizing bacteria |
| 04/13/2000 | WO2000020344A1 Improvements to waste water treatment using activated sludge process |
| 04/13/2000 | WO2000019811A1 Methods and organisms for concentrating and recovering metals and minerals from aqueous media |
| 04/13/2000 | WO2000001622A3 Method and installation for treating waste water from oil seed and cereal processing |
| 04/13/2000 | DE19842884A1 Racetrack activated sludge treatment basin with up-flow separator minimizes the size of this and subsequent waste water treatment basins |
| 04/12/2000 | EP0991594A1 Method and device for sewage treatment |
| 04/12/2000 | EP0605675B1 Process for lowering the phosphorus content of waste water |
| 04/12/2000 | CN1250428A Treatment of effluent streams containing organic acids |
| 04/11/2000 | USRE36651 Process for removal of dissolved hydrogen sulfide and reduction of sewage BOD in sewer or other waste systems |
| 04/11/2000 | US6048460 Biological method of treating sewage containing high concentrations of sludge |
| 04/11/2000 | US6048459 Method and apparatus for fluidization of particulate bed materials |
| 04/06/2000 | WO2000018694A1 Denitrifying composition for removing nitrate nitrogen and process for producing the same |
| 04/06/2000 | WO2000018693A1 Microbiological method for eliminating a nitroaromatic compound |
| 04/06/2000 | WO2000018692A1 Wastewater treatment tank with influent gates and pre-react zone with an outwardly flared lower portion |
| 04/06/2000 | WO2000018691A2 Phosphate removal process |
| 04/06/2000 | WO2000018498A1 Apparatus and method for cleaning membrane filtration modules |
| 04/06/2000 | DE19844315A1 Determination of the anaerobic degradability of organic substances comprises subjecting the substance to a degradation process in a sealed vessel and measuring the pH, redox potential, temperature and gas pressure as a function of time |
| 04/05/2000 | CN2372312Y Sewage treatment membrane type aeration head |
| 04/05/2000 | CN1249277A Sewage treating pool with deep aeration |
| 04/05/2000 | CN1249276A Process for treating sewage and mud with microbes |
| 04/05/2000 | CN1051060C Three-D elastic corrugation filler |
| 04/05/2000 | CN1051059C Method for making three-D filler |
| 04/04/2000 | US6046045 Methods for decomposing quinolones and naphthyridones |
| 04/04/2000 | US6045695 Biological treatment of spent caustics |
| 04/04/2000 | US6044854 Parts washing system |
| 03/30/2000 | DE4038504C2 Vorrichtung zur Injektion von Druckluft in eine Flüssigkeit Device for injection of compressed air into a liquid |
| 03/30/2000 | DE19844171A1 Biosorption process for removal of metals from solution, uses the consumption of citric acid by growing fungi to raise the pH to cause biosorption of metals into the fungal biomass |
| 03/30/2000 | DE19843862A1 Verfahren zur Verhinderung der Schwimm- und/oder Blähschlammausbildung und/oder Beseitigung von Schwimm- und Blähschlamm in Kläranlagen A method for preventing the float and / or Blähschlammausbildung and / or disposal of flotation sludge in sewage treatment plants |
| 03/30/2000 | DE19841825A1 Waste water treatment rotating aeration drum has series of sickle-shaped baffles for resident micro-organisms, combines efficiency with easy installation |
| 03/29/2000 | EP0989098A1 Bacterial strain Comamonas Testosteroni MC1 and process for the microbial decontamination of materials polluted with phenoxyacetic acid herbicides |
| 03/29/2000 | EP0989097A1 Method for preventing the floating and blowing sludge production and/or for eliminating floating and blowing sludge in purification plants |
| 03/29/2000 | CN1050821C Facultative method and equipment for treating waste water containing pig excrement and urine |
| 03/29/2000 | CN1050820C Biological adaptive color elastic corragated 3-D filler |
| 03/28/2000 | US6043068 Microorganisms-immobilized magnetic carriers, a process for producing carriers |
| 03/28/2000 | US6043067 Agitating suspended particles and liquid to divide it into turbulent zone close to liquid inlet and non-turbulent zone away from inlet; extent of turbulent zone is determined by degree of agitation; for bioreactors and wastewater treatment |
| 03/28/2000 | US6043022 Apparatus and method for the generation and use of ferric ions |
| 03/28/2000 | US6042728 Water purifier and method of water purification |
| 03/28/2000 | US6042724 Water treatment apparatus and purification process using the water |
| 03/28/2000 | CA2164090C Process for purifying sulphide-containing waste water |
| 03/23/2000 | WO2000015566A1 Wastewater treatment system |
| 03/23/2000 | WO2000015565A2 Fluidized radial flow bioreactor utilizing pellet media |
| 03/23/2000 | WO2000015564A1 Waste water treatment |
| 03/23/2000 | WO2000015563A1 Improved microbial biomass support structure and methods for making same |
| 03/23/2000 | WO2000015322A1 Wastewater treatment system with air pump/control panel platform |
| 03/23/2000 | DE19924879A1 Process and sub-soil reactor assembly to clean contaminated flowing or stagnant ground water, exploits natural ground water flow gradient without flow interruption |
| 03/23/2000 | DE19842332A1 Waste water treatment sub-divided into transport and reactor zones facilitating the simultaneous aerobic and anaerobic processes, accelerating biological break-down |
| 03/23/2000 | DE19841024A1 Waste water treatment plant compensates for sharp variations in the rate at which water is admitted for treatment, without discharge of untreated water |
| 03/23/2000 | CA2343393A1 Wastewater treatment system |
| 03/22/2000 | EP0987224A2 Method and apparatus for removing phosphorus and nitrogen from wastewater |
| 03/22/2000 | EP0986519A1 Biological product for maintaining water mains and purifying waste water |
| 03/22/2000 | EP0880476B1 Process and plant for sewage treatment |
| 03/22/2000 | CN2370002Y Film type biological reactor |
| 03/21/2000 | US6040154 Biodegradation by culturing gordona terrae cip i-1889 and rhodococcus equi cip i-2053 in presence of aqueous effluents; water treatment; pollution control |
| 03/21/2000 | US6039875 Establishing turbulent conditions in aqueous solution and adding cultures of an exo-polymer producing bacterial capable of incorporating phosphate in poly(beta-hydroxybutyrate) storage polymers; inhibit filamentous bacteria |
| 03/21/2000 | US6039874 Aerobic digestion of screened effluent in a lagoon utilizing bacteria; diverting some for flushing livestock buildings, clarifying and denitrifying, filtration and sterilization to provide livestock drinking water; closed loop system |
| 03/21/2000 | US6039873 Controlling oxygen to form gradient with aerobic zone at surface and anoxic zone at bottom of biotank; simultaneously working integrated nitrification and denitrification in combination with an advanced biological p-elimination |
| 03/21/2000 | US6039867 Device for continuous disintegration of activated sludge |
| 03/21/2000 | US6039866 Fluidized bed filtering apparatus |
| 03/21/2000 | CA2107689C Method for removing sulphur compounds from water |
| 03/16/2000 | WO2000013787A2 Oil sorbent composition |
| 03/15/2000 | EP0985641A2 Process for treating waste water containing cutting oil |
| 03/15/2000 | EP0985640A2 Process for treating waste water containing a resin |
| 03/15/2000 | CN2368838Y Powerless self-flowing miniature sewage treating apparatus |
| 03/15/2000 | CN1247167A Biological chain method for treating ultrophication of water in lake |
| 03/15/2000 | CN1247166A Biological treatment process and unit for wate water containing dye in textile and leather industry |
| 03/14/2000 | US6037338 And reducing risk of heart attacks |
| 03/14/2000 | US6036863 Treating water in a vessel containing particulate biofilm carriers where gas is supplied within said vessel to create an upward flow of stagnant water adjacent a side wall of said vessel; use in aquacultures |
| 03/14/2000 | US6036862 Monitoring oxidation-reduction potential, temperature and concentration of volatile fatty acids and sulfides in the bulk liquid and adjusting the rate of injection of oxygen, oxygen transfer efficiency and volume of liquid in response |
| 03/14/2000 | US6036854 System for waste water treatment |
| 03/14/2000 | US6036852 Surface bioreactor for growth of sufficient biomass of selected isolate; mixing chamber where cells are suspended in water and additives added; injector for injecting biomass; microbial biofilter emplaced in situ; use in aquifiers |
| 03/14/2000 | US6036851 Peat bale filtration element |
| 03/14/2000 | CA2247561A1 Effluent treatment |
| 03/14/2000 | CA2179575C Process and system for purification of waste water |
| 03/10/2000 | CA2246860A1 Waste treatment system |
| 03/09/2000 | WO1999043791A3 Diisopropyl fluorophosphatase and the utilization and production thereof |
| 03/09/2000 | DE3833356C2 Biogasanlage mit flexibler Glocke Biogas plant with flexible bell |