| Patents for C02F 3 - Biological treatment of water, waste water, or sewage (46,453) |
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| 03/09/2000 | DE19842005A1 Verfahren und Vorrichtung zur Behandlung von biologischen Abfällen Method and apparatus for treatment of biological waste |
| 03/09/2000 | DE19838692A1 Waste water treatment plant for small remote settlement has distributor shaft to low-cost modular reed basins reducing capital and operating costs |
| 03/09/2000 | DE19828054C1 Process for the removal of organic contamination in wastewater and ground water comprises the adsorption of the contaminants to polymers on a solid support and microbial regeneration of the polymers |
| 03/08/2000 | EP0983970A2 A material and a method for wastewater treatment |
| 03/08/2000 | EP0983968A2 Process and apparatus for treating wastes of biological origin |
| 03/08/2000 | EP0790851B1 Activated sludge degassing process and device |
| 03/08/2000 | CN1246815A Process for purifying substances polluted with organohalogen compounds |
| 03/08/2000 | CN1050110C Oxygen-gathering activated aerator |
| 03/07/2000 | US6034013 In glass matirx |
| 03/07/2000 | US6033572 Sequentially treated through use of biological treatment means, chemical treatment means, and filtration means |
| 03/07/2000 | US6033571 Activated sludge treatment method and apparatus |
| 03/07/2000 | US6033569 Method of biologically removing nitrogen and system therefor |
| 03/07/2000 | US6033559 Compositions and methods of use of constructed microbial mats |
| 03/07/2000 | US6032931 Apparatus for selective aeration |
| 03/07/2000 | CA2142609C Water treatment process and water treatment apparatus |
| 03/03/2000 | CA2281338A1 Method and apparatus for wastewater treatment |
| 03/02/2000 | WO2000011464A1 APPARATUS AND METHOD FOR MEASURING NOx AND NITRIFICATION/DENITRIFICATION RATES IN BIOCHEMICAL PROCESSES |
| 03/02/2000 | WO2000010927A1 Method and installations for treating effluents in small communities |
| 03/02/2000 | WO1999067173A3 Filtering plant for waste water |
| 03/02/2000 | DE19839161A1 Process to back-flush regenerate water treatment filter bed using a volume of water stored at a higher level dispenses with pumps |
| 03/01/2000 | EP0981500A1 Method and apparatus for biological removal of nitrogen compounds from water |
| 03/01/2000 | EP0981499A1 Method for reducing the level of hydrogen sulfide in wastewater systems |
| 03/01/2000 | EP0809612B1 Method and composition for enhanced bioremediation of petroleum |
| 03/01/2000 | EP0784597B1 Process and arrangement for biodegrading pollutants in water |
| 03/01/2000 | CN2366412Y Flow guiding type aerator |
| 03/01/2000 | CN2366411Y Membrane-jet stream aeration pressure reactor |
| 03/01/2000 | CN1245845A Closed control method of paper-making waste water |
| 03/01/2000 | CN1245782A Gas stripping and photocatalytic oxidation sewage treatment equipment |
| 03/01/2000 | CN1245779A Sewage treatment installation |
| 03/01/2000 | CN1245778A Sewage treatment installation |
| 03/01/2000 | CN1049878C Polyoxy activation aeration device |
| 02/29/2000 | US6030558 Sintered porous plastic products and method of making same |
| 02/29/2000 | US6030534 Defining a spiral three-dimensional flow pattern such that the flow pattern affords time for separations and/or completion of aerobic (oxidation) and anaerobic (denitrification) reactions; friction resistance; nonsettling sludge |
| 02/29/2000 | US6030533 Using an immobilized soil bioreactor having a headspace re-circulation system; biodegradation of volatile organic compounds (voc's); aeration and non-aeration sides segregated by a supported soil matrix; circulation to minimize methane |
| 02/29/2000 | US6030528 Waste water treatment plant for removing nitrogen and phosphorus |
| 02/29/2000 | US6029955 Counterbalanced dual submarine-type liquid mixer pairs |
| 02/25/2000 | CA2281443A1 A material and a method for wastewater treatment |
| 02/24/2000 | DE19837719A1 Small-scale waste water treatment plant for use at remote settlements has rinse unit preventing unplanned blockage and providing continuous operation |
| 02/24/2000 | DE19837716A1 Small-scale waste water treatment plant for remote settlements has pump shaft which facilitates use of three-chamber water treatment housing |
| 02/24/2000 | DE19832224C1 Height-adjustable water aeration air supply has adjustable clamp facilitating accurate capture of the water bubbles by the funnel, in spite of any slope in the basin floor |
| 02/24/2000 | DE19700238A1 Drive transmission for waste water treatment rotating drum uses belt or chain to externally-mounted pulley reducing manufacturing cost |
| 02/23/2000 | EP0980340A2 Method for reducing moisture content |
| 02/23/2000 | CN2365208Y Sewage biological treatment apparatus |
| 02/23/2000 | CN2365207Y Industrial and domestic sewage disposal apparatus |
| 02/23/2000 | CN2365206Y Double-side diversion biological sewage treating device |
| 02/23/2000 | CN1245452A In situ remediation of contaminated soils |
| 02/23/2000 | CN1245442A Integrated water treatment system for aquaculture water |
| 02/23/2000 | CN1245151A Microbe treatment system for improving water quality of aquaculture pond |
| 02/22/2000 | CA2100638C Aerator device |
| 02/17/2000 | WO2000007946A1 Method of liquefying microorganisms derived from biological wastewater treatment processes |
| 02/17/2000 | WO2000007944A1 In situ treatment for contaminated surface waters and products therefor |
| 02/17/2000 | WO2000007940A2 Method and device for separating biomass from water |
| 02/17/2000 | DE19845784C1 New Comamonas testosteroni strain MC1 useful for decontamination of materials and water contaminated with products of phenoxyalkanoic acid herbicide manufacture |
| 02/17/2000 | DE19836291A1 Process to manufacture water aeration folded elongated rubber tube with extruded sections of different thickness and hardness and punched slits |
| 02/17/2000 | DE19836290A1 Water aeration mattress discharge unit has material of different thickness and hardness minimizing underwater distortion and simplifying installation |
| 02/17/2000 | DE19835363A1 Einsatz für eine Klärkammer einer Kläranlage Working for a clarification chamber of a sewage plant |
| 02/17/2000 | DE19834945A1 Continuous biological purification and re-use of waste water containing surfactant, e.g. from laundry, involves adsorbing impurities and regenerating adsorbent suspension in bioreactor |
| 02/17/2000 | CA2339220A1 In situ treatment for contaminated surface waters and products therefor |
| 02/16/2000 | EP0979803A2 Water treatment system based on denitrification |
| 02/16/2000 | EP0979299A1 Bioluminescent reporter bacterium and methods for toxicity monitoring in biological wastewater treatment systems |
| 02/16/2000 | CN1244502A Water purifying agent and water purifying method |
| 02/16/2000 | CN1049409C Synchronous intensified jet method of biological dephenolized mud mixed nutrient sewage |
| 02/16/2000 | CN1049408C Treatment for wastewater from production of fine terephthalic acid |
| 02/15/2000 | US6025187 Contacting low molecular weight organic nitrogenous compound or inorganic nitrogenous compound from animal waste with a viable nonpathogenic bacterial complex and producing protein; pollution control |
| 02/15/2000 | US6024877 Process and installation for the treatment of effluents loaded with organic materials |
| 02/15/2000 | US6024876 Reactor for biologically removing organic pollutants from water |
| 02/15/2000 | US6024870 Sewage filtration system |
| 02/15/2000 | CA2083572C Apparatus for aeration of septic tanks |
| 02/10/2000 | WO2000006504A1 Clean water system and its structure |
| 02/10/2000 | WO2000006313A1 New products and methods using foundry dust |
| 02/10/2000 | DE19835256A1 Verfahren und Vorrichtung zur Trennung von Biomasse und Wasser Method and apparatus for separation of biomass and water |
| 02/09/2000 | EP0978481A2 Water purifier and method of water purification |
| 02/09/2000 | EP0978480A2 Packing element for a chamber of a water treatment plant |
| 02/09/2000 | EP0978311A1 A method of fluid bed chromatography |
| 02/09/2000 | EP0977713A1 Air charged backwashing bioclarifier |
| 02/09/2000 | EP0977663A1 Sintered porous plastic products and method of making same |
| 02/09/2000 | EP0907615B1 A reactor for the depuration of polluted waste waters |
| 02/09/2000 | EP0604514B1 Treatment of aqueous media containing organic material |
| 02/09/2000 | CN2362847Y Waste water and sewage treating equipment used in anaerobic, acidutated water treatment process |
| 02/09/2000 | CN2362846Y Sewage treating apparatus by pressured biological activated char process |
| 02/09/2000 | CN2362845Y Strip shape rotary type suspension padding |
| 02/09/2000 | CN2362844Y High-efficiency aeration, baterial cultivation biochemical brick |
| 02/09/2000 | CN2362843Y Vertical oxidation trough |
| 02/09/2000 | CN1244135A Device for stirring and aerating a liquid and eliminating the foam in a vat for treating this liquid |
| 02/09/2000 | CN1243766A Filler with position limitation |
| 02/09/2000 | CN1049197C Method for treating waste water produced from penicillin production |
| 02/08/2000 | US6022537 Bacterial strains of the genus Bacillus, closely phenotypically related to the genus Lactobacillus, culture method and use |
| 02/08/2000 | US6022476 Disposing bio-suspension elements which provide supporting surfaces for growth of microorganisms within enclosure which is floating in body of water; intermettently introducing microorganism, agitating, aerating; removing treated water |
| 02/08/2000 | CA1340895C Produit et procede pour activer le fonctionnement d'un syseme de digestion anaerobie de residus organiques solides |
| 02/03/2000 | WO2000005177A1 Process for the treatment of waste water containing specific components, e.g. ammonia |
| 02/03/2000 | WO2000005176A1 Process for the treatment of waste water containing ammonia |
| 02/03/2000 | WO2000004972A1 A device of three-chamber type for purifying liquid |
| 02/03/2000 | WO2000004960A1 Biodispersion as a method for removal of hydrocarbon oil from marine aqueous environments |
| 02/03/2000 | DE19931393A1 Small scale water treatment plant |
| 02/03/2000 | CA2338228A1 A device of three-chamber type for purifying liquid |
| 02/02/2000 | EP0976683A1 Process for transforming into humus an aqueous suspension of organic matter, especially sewage sludge |
| 02/02/2000 | EP0976447A1 Fluid bed reactor |
| 02/02/2000 | EP0963232A4 Integrated water treatment system for aquaculture water |
| 02/02/2000 | CN2361630Y Unpowered domestic sewage treatment apparatus |
| 02/02/2000 | CN2361627Y 沼气发生器 Biogas Generator |