| Patents for C02F 3 - Biological treatment of water, waste water, or sewage (46,453) |
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| 01/14/2009 | CN101343134A Ecological treatment apparatus and method for contamination biogas slurry of livestock and poultry cultivation |
| 01/14/2009 | CN101343133A Comprehensive treatment method for wastewater of livestock and poultry cultivation |
| 01/14/2009 | CN101343132A Treatment method for wastewater of polyvinyl chloride (PVC) anticentripetal mother solution |
| 01/14/2009 | CN101343130A Integrated device for treating and recycling wastewater |
| 01/14/2009 | CN101343129A Pretreatment technique for decolorization of wastewater at middle plate of paper-making pulping |
| 01/14/2009 | CN101343121A Tridimensional gravity-flow type sewage processor |
| 01/14/2009 | CN101343120A Biological adsorption treatment method for heavy metal wastewater |
| 01/14/2009 | CN101343119A Zeolite-acorus calamus artificial wet land sewage treatment system and treatment method |
| 01/14/2009 | CN101343118A Technique for treating sewage water of pig farm with grass |
| 01/14/2009 | CN101343117A High-efficiency low-consumption biological denitrification method for urban sewage |
| 01/14/2009 | CN101343116A Quick start method for anaerobic ammonia oxidation bioreactor for urban sewage |
| 01/14/2009 | CN101343115A Unpowered bio-filter water purifying system with oxygenation and backwash functions |
| 01/14/2009 | CN101343114A Biological denitrification method for wastewater of industrial cultivation |
| 01/14/2009 | CN101343113A Ultramicro air bubble apparatus and dual-circulation ultramicro air bubble diffusion system |
| 01/14/2009 | CN101343112A Rotary aeration disc with water level indicator |
| 01/14/2009 | CN101343111A Method for improving attached growth wastewater treatment biomembrane reactor efficiency |
| 01/14/2009 | CN101343110A Controlled release capsule with city appearance water body denitrification dephosphorization function |
| 01/14/2009 | CN101343109A Biological treatment method for wastewater of beer preparation |
| 01/14/2009 | CN101343102A Adsorption and magnetic separation coupling method for recycling precious metal ion in precious metal |
| 01/14/2009 | CN101343090A Lanthanide series water treatment agent and method of preparing the same |
| 01/14/2009 | CN101341857A Ecological regulate and control cultivation method for penaeus orientalis in sea water pool |
| 01/14/2009 | CN101341851A Artificial algae field and construction method |
| 01/14/2009 | CN100451112C Process for fixation of white rot fungus for inhibiting varied bacteria growing in non-sterilizing environment |
| 01/14/2009 | CN100451111C Process for producing fixed particle to repair surface water |
| 01/14/2009 | CN100450968C Method for preparing microporous mullite aerated head(plate) by fly ash |
| 01/14/2009 | CN100450946C Printing and dyeing waste water treatment method based on film technology |
| 01/14/2009 | CN100450940C High-concentration biochemical aerator |
| 01/14/2009 | CN100450939C Clearance blast aeration oxidation ditch sewage treatment technology |
| 01/13/2009 | US7476322 Process and energy-efficient biological treatment system with filtration membrane |
| 01/13/2009 | US7476321 Method and a plant for waste water treatment |
| 01/13/2009 | US7476320 Process for groundwater remediation |
| 01/13/2009 | US7476319 Method and apparatus for continuously controlling denitrification in variable nitrogen loads in wastewater |
| 01/13/2009 | CA2507435C Method and system for removal of contaminants from aqueous solution |
| 01/13/2009 | CA2345682C Cyclic aeration system for submerged membrane modules |
| 01/08/2009 | WO2009005397A2 Method for biological cleaning of oil-contaminated bottom sediments |
| 01/08/2009 | WO2009005016A1 Water treatment apparatus |
| 01/08/2009 | WO2009004154A2 Method for the bacterial treating of effluents containing 2-ethylhexyl nitrate |
| 01/08/2009 | WO2009003800A1 Method for determining the amount of oxygen introduced into a process tank of a biological treatment works during a ventilation process |
| 01/08/2009 | WO2009003603A2 Apparatus and method for the purification of grey water |
| 01/08/2009 | WO2009003369A1 A process for treating fermentation spent liquor from lysine production |
| 01/08/2009 | WO2008132296A3 Method and equipment for processing waste water containing sulphides and ammonium |
| 01/08/2009 | WO2008121373A3 Membrane biofilm reactor for removing contaminants from ground water |
| 01/08/2009 | US20090008338 determining whether septic tank containing liquid and sludge or scum mixture needs to be emptied by locating sensor in mixture wherein sensor is adapted to measure depth of sludge or scum and generate warning signal when sensor is indicative of depth of sludge exceeding predetermined limit |
| 01/08/2009 | US20090008326 Method and apparatus for collecting bacterial cells, method for acclimatizing bacterial cells, and wastewater treatment equipment |
| 01/08/2009 | US20090008324 Intermittent anaerobic biological treatments of rainfall-induced sewerage |
| 01/08/2009 | US20090008315 Method and apparatus for collecting bacterial cells, method for acclimatizing bacterial cells, and wastewater treatment equipment |
| 01/08/2009 | US20090008314 Method and apparatus for collecting bacterial cells, method for acclimatizing bacterial cells, and wastewater treatment equipment |
| 01/08/2009 | US20090008313 Process and equipment for treating ammonium containing liquid |
| 01/08/2009 | US20090008311 Pure Oxygen Aeration System for Wastewater Treatment |
| 01/08/2009 | DE102007042036A1 Waste water treatment in biofilm reactor, e.g. trickling filter, involves using simultaneous nitrification and denitrification, where amount of oxygen for nitrification or anoxic condition for denitrification is adjusted |
| 01/08/2009 | DE102007030938A1 Vorrichtung und Verfahren zur Reinigung von Grauwasser Apparatus and method for the purification of gray water |
| 01/07/2009 | EP2011579A1 Method of treating biomass, compost, mulching material for livestock and agent for treating biomass |
| 01/07/2009 | CN201176413Y Three-phase separator |
| 01/07/2009 | CN201176412Y Elastic stereo fillers for sewage disposal |
| 01/07/2009 | CN201176411Y Bio slow-filtrating device for rain water accumulation |
| 01/07/2009 | CN101341098A System and method for the renovation of process water |
| 01/07/2009 | CN101341097A Flow equalized rotating biological contactor |
| 01/07/2009 | CN101340971A Device for cooling, condensing, aerating and/or mixing water and use method thereof |
| 01/07/2009 | CN101338292A Method for preparing immobilization cold resistant strain |
| 01/07/2009 | CN101338289A Method for producing bio decolorizing strain agent special for dyeing waste water dye by fermenting alcohol waste water |
| 01/07/2009 | CN101338284A Degradation strain capable of high-efficiency degrading bactericide chlorothalonil and use thereof |
| 01/07/2009 | CN101338282A Heterotrophic nitrification aerobic denitrifying bacteria, culturing method thereof and uses |
| 01/07/2009 | CN101337756A Combined treatment method for waste water by waste liquid in process of synthetic ammonia and alcohol production |
| 01/07/2009 | CN101337755A Biodegradation process for ultra-thick oil waste water in oilfield |
| 01/07/2009 | CN101337754A Advanced treatment method and device for dyeing waste water by ozone iron zinc catalysis |
| 01/07/2009 | CN101337743A Method for processing production waste liquid of ketene dimer by composite bacteria |
| 01/07/2009 | CN101337742A In-one-pond system together with water quality purification and agricultural industry function |
| 01/07/2009 | CN101337741A Depth ecological purifying process for water secondary treatment of sewage treatment plant |
| 01/07/2009 | CN101337740A Two-stage water supply bio denitrification system and process thereof |
| 01/07/2009 | CN101337739A Non-aeration water treating device |
| 01/07/2009 | CN101337738A Process for removing bio foam in sewage disposal process by activated sludge process |
| 01/07/2009 | CN101337737A Container integrated modularizing pollutant handling arrangement |
| 01/07/2009 | CN101337736A Sewage treatment plant and process by SBR process |
| 01/07/2009 | CN101337735A Sewage treatment plant and process by suspending biological filter |
| 01/07/2009 | CN101337734A Process for treating waste water by improved sequencing batch reactor |
| 01/07/2009 | CN101337733A Guide apparatus for inducing downward flow of surface water |
| 01/07/2009 | CN101337729A Processing process for fermentation waste liquid of lysine |
| 01/07/2009 | CN101337697A Waste water reclamation and recycle treating device |
| 01/07/2009 | CN101336642A Inhibitor for preventing sulfate reducing bacteria corrosion |
| 01/07/2009 | CN100448983C Nitrobacteria growth promoter |
| 01/07/2009 | CN100448980C Natto slime hypha and its preparing method and application |
| 01/07/2009 | CN100448977C Gas lifting circulation type aerobe reactor |
| 01/07/2009 | CN100448788C Composite micro oxygen hydrolysis reaction device and its method of treating sewage |
| 01/07/2009 | CN100448787C Gas-lifting type self-circulating anaerobic bioreactor |
| 01/07/2009 | CN100448773C Palm root carbon preparing process and its biomembrane reaction apparatus |
| 01/07/2009 | CN100448509C Filtering medium and use of the said filtering medium for pollution removal from lagoons |
| 01/06/2009 | US7473365 Wastewater in the biological tank is aerated until measured nitrate or redox values meet high nitrate or high redox set value conditions relative to minimum aeration and maximum aeration time requirements; anoxic treatment |
| 01/06/2009 | US7473364 Combining wastewater containing BOD with bacteria-laden sludge, separating the mixed liquor into a clear effluent and an activated sludge stream, returning activated sludge stream to the mainstream reactor, processing a second portion, adding FeCl3 or FeSO4 to of the wastewater, liquor or sludge |
| 01/06/2009 | US7473363 Adding at least one cell signalling chemical (CSC) such as a bacterial pheromone, a eulcaryotic hormone or a diffusible communication molecule to a sewage substrate, wherein the CSC regulates activity in at least one microbial population in the sewage substrate |
| 01/06/2009 | CA2401758C Fuel cell power generation method and system |
| 01/06/2009 | CA2353991C Apparatus and method for measuring nox and nitrification/denitrification rates in biochemical processes |
| 01/01/2009 | US20090001017 System and process for water treatment |
| 01/01/2009 | US20090001016 Apparatus for Treatmenting of Sewage Using Semi-Batch and Method Thereof |
| 01/01/2009 | US20090001002 Wastewater Purification Plant By Means of Plants |
| 12/31/2008 | WO2009001593A1 Method of removing silver and washing machine |
| 12/31/2008 | WO2009000845A2 Method of using contaminated water from an oilwell effluent stream |
| 12/31/2008 | WO2009000693A1 Method of treating water |
| 12/31/2008 | WO2007107981A3 Methods, compositions and devices for maintaining chemical balance of chlorinated water |
| 12/31/2008 | WO2007084677A3 System and method for applying reduced pressure to cell culture |
| 12/31/2008 | EP2008975A2 A method for obtaining drinking water from a liquid fraction of human or animal faeces, a bioreactor unit, a storage tank, and a method for growing a bacterial culture for use in such a method |