| Patents for C02F 3 - Biological treatment of water, waste water, or sewage (46,453) |
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| 07/25/2001 | CN1068856C Waste water treating device |
| 07/25/2001 | CN1068855C Sewage treating device |
| 07/24/2001 | US6264838 On site waste water recycling system |
| 07/24/2001 | US6264720 Extracting metal from substrate by contacting with aqueous treatment solution containing (s,s)-ethylene diamine disuccinic acid and (s,s)-di-imine butane dioic acid acting as chelating agent to form extract solution; separating |
| 07/24/2001 | US6264176 Aeration diffuser |
| 07/24/2001 | CA2133454C Method and apparatus for effecting gas-liquid contact |
| 07/19/2001 | WO2001051738A2 Water circulation device for decorative ponds |
| 07/19/2001 | WO2001051424A1 Method and arrangement for introduction of sewage pre-treatment upstream of sewage treatment facility |
| 07/19/2001 | WO2001004060A3 Method of purifying water, suitable bacteria for the method and use thereof |
| 07/19/2001 | DE19960400A1 Coarse substances removal from waste water involves filtering water using net bags alternately filled and suspended within covered cistern for release to sediment basin |
| 07/19/2001 | DE10001714A1 Packing for biological filter used in aquarium includes substrate for highly porous bodies in planar or spatial configurations |
| 07/19/2001 | DE10001693A1 Waste water recovery system has a small filter at the waste water outlet to pass cleaned water to a store tank for use in flushing toilets etc and soiled water is passed to the sewage drain under control |
| 07/19/2001 | DE10001107A1 Sludge-thickening digester capable of denitrification and biogas production, comprises vessel with provisions for recirculation, mixing, and gas off take |
| 07/19/2001 | DE10000258A1 Assembly for treating car wash water effluent includes plastic basket containing charge of biological substrate for microbes in holding tank |
| 07/18/2001 | EP1116695A1 Submersible in-situ oxygenator |
| 07/18/2001 | EP1115664A1 Waste water treatment |
| 07/18/2001 | EP0846083B1 Process and device for treatment of water from a biodegradeable process |
| 07/18/2001 | CN2439441Y Unit lifting, variable micro-hole and anti-counter turning type aerator |
| 07/18/2001 | CN2439440Y Block assembling type large rotating disc aerator |
| 07/18/2001 | CN1068565C Nitrification and denitrification waste water treatment process and treatment equipment |
| 07/17/2001 | US6261456 Waste water treatment method and waste water treatment equipment capable of treating waste water containing fuluorine, nitrogen and organic matter |
| 07/17/2001 | US6260831 Apparatus for aerating water with fine bubbles |
| 07/12/2001 | WO2001049615A1 Wastewater treatment plant operating procedure |
| 07/12/2001 | US20010007313 Pollution control |
| 07/12/2001 | US20010007311 Using calcium carbonate |
| 07/12/2001 | DE19961195A1 Small scale water purification plant comprises preclarification tank and post-clarification tank, sludge recycling pipe leading from funnel-shaped sludge collector at bottom of post-clarification tank to preclarification tank |
| 07/11/2001 | EP1114797A1 Device for the purification of waste water. |
| 07/11/2001 | EP1113998A1 Process for the treatment of waste water containing specific components, e.g. ammonia |
| 07/11/2001 | EP1113997A1 Process for the treatment of waste water containing ammonia |
| 07/11/2001 | EP1113863A1 Nutritional spray microemulsion useful as biodegradation accelerator |
| 07/11/2001 | EP0949948B1 Method and device for continuous filtration of liquids |
| 07/11/2001 | CN2438712Y Cyclone mixed diffusion aerater |
| 07/11/2001 | CN2438711Y Non-support filling stereo suspension device |
| 07/11/2001 | CN2438710Y Structure adapted for lifting aerator and freely swining filling |
| 07/11/2001 | CN2438709Y Upward flow aeration biological filtering tank |
| 07/11/2001 | CN1303357A Method fro regulating aeration during waste water biological treatment |
| 07/11/2001 | CN1302770A Multi-stage anaerobic-aerobic process for treating sewage |
| 07/11/2001 | CN1302769A Biochemical method for synchronously treating discharged sewage |
| 07/11/2001 | CN1302699A Method and facilities for comprehensively treating life garbage, excrement, urine and sewage in urban area to make them become useful resources |
| 07/11/2001 | CN1068238C Method and apparatus for recovering water from sewer main |
| 07/10/2001 | US6258594 Human waste treatment system |
| 07/10/2001 | US6258589 Methods for providing a chemical to a microorganism |
| 07/10/2001 | US6257751 Method and apparatus for maintaining solids in suspension in a liquid |
| 07/05/2001 | WO2001047816A2 Method and device for purifying untreated water |
| 07/05/2001 | US20010006261 Diffused aeration method |
| 07/05/2001 | DE19962793A1 Vorrichtung und Verfahren zur biologischen Abwasserreinigung Apparatus and method for biological wastewater treatment |
| 07/04/2001 | EP1112969A1 Process for controlling the respiration activity of microorganisms in an activated sludge process in waste water treatment |
| 07/04/2001 | EP1112968A1 Soil water activated sludge treating system and method therefor |
| 07/04/2001 | EP1112232A1 Method of treating waste water |
| 07/04/2001 | EP1112231A1 Method and installations for treating effluents in small communities |
| 07/04/2001 | CN1302279A Waste liquid treatment process and plant |
| 07/04/2001 | CN1301673A Vertical sectional integrated waste water biochemical treatment method and device |
| 07/03/2001 | US6254779 Treatment of effluent streams containing organic acids |
| 07/03/2001 | US6254778 Method for purifying carbon-containing pollution and denitrifying waste water in oxygenic medium |
| 07/03/2001 | US6254777 Biodegradation |
| 07/03/2001 | US6254775 Anaerobic digester system and method |
| 07/03/2001 | US6254066 Apparatus for aerating liquid in a wastewater treatment tank |
| 06/28/2001 | WO2001046075A2 Method for biological effluent treatment |
| 06/28/2001 | DE19959820A1 Apparatus for extraction of floating, whirlable carrier material of micro-organisms comprises a vertically adjustable extraction funnel which is located in the separation zone directly below the water level |
| 06/28/2001 | DE19956370C1 Clarification basin has fixed bed with perforated floor above funnel into which sludge is discharged connected to riser pipe, stand pipe being mounted in center of bed with suction tube and aeration membrane at base |
| 06/28/2001 | CA2393636A1 Method for biological wastewater treatment |
| 06/27/2001 | EP1110916A1 Process for the biological treatment of waste water |
| 06/27/2001 | EP1110915A2 Device and method for biologically purifying waste water |
| 06/27/2001 | EP1110598A1 Method and unit for processing contamined liquid |
| 06/27/2001 | EP1109749A1 In situ treatment for contaminated surface waters and products therefor |
| 06/27/2001 | EP1109748A1 Multistage facultative wastewater treatment system |
| 06/27/2001 | EP1109747A1 Active purifying structures for lining and forming compact physico-biological filters |
| 06/27/2001 | EP1109746A1 Fluid purifying device using physical and/or biological reactors |
| 06/27/2001 | EP0876304B1 Soil and water remediation and enhancement process and apparatus therefor |
| 06/27/2001 | CN1300715A Process for treating city sewage |
| 06/27/2001 | CN1067641C Toilet equipment on ship |
| 06/26/2001 | US6251657 Culturing microorganism in aqueous medium of benzene and dissolved nitrate; efficient treatment of wastewater, groundwater, or slurry |
| 06/26/2001 | US6251277 Method and device for purifying protein containing waste water |
| 06/26/2001 | US6250237 Method for using tree crops as pollutant control |
| 06/23/2001 | CA2329393A1 Apparatus and process for biological wastewater purification |
| 06/21/2001 | WO2001044128A1 Filter arrangement for aquariums biotopes swimming pools or similar and for sewage pre-treatment |
| 06/21/2001 | WO2001044125A1 Decontamination method and system, such as an in-situ groundwater decontamination system, producing dissolved oxygen and reactive initiators |
| 06/21/2001 | WO2001044119A1 Fermentation system, methods, and apparatus |
| 06/21/2001 | DE19960146A1 Fast, fluidized sludge bed wastewater purification reactor, re-dissolves gases arising back into wastewater under increased pressure |
| 06/21/2001 | DE19959103A1 Verfahren und Vorrichtung zur Behandlung von Abwasser Method and apparatus for treating waste water |
| 06/21/2001 | CA2395116A1 Decontamination method and system, such as an in-situ groundwater decontamination system, producing dissolved oxygen and reactive initiators |
| 06/20/2001 | EP1108685A2 Resin cultivating base, water purifying device and method using resin cultivating base |
| 06/20/2001 | EP0809611B1 Biological water treatment plant for producing drinking water |
| 06/20/2001 | CN1300318A Microbial culture liquors containing microorganisms differing in characteristics and living in symbiosis and metabolites thereof, carriers and adsorbents containing the active components of the culture liquors and utilization of the same |
| 06/20/2001 | CN1300268A Waste water treatment method for removing organic matter and nitrogen, carrier used thereof and method for manufacturing the carrier |
| 06/20/2001 | CN1067425C Method for changing organic waste into resources |
| 06/20/2001 | CN1067289C Method of separating solids from liquids and/or separating emulsions |
| 06/19/2001 | US6248595 Method of measuring a nitrification rate for liquids |
| 06/19/2001 | US6248234 Water-dissolvable bioremediation device and method of use |
| 06/19/2001 | CA2155755C Reactor for biological sewage purification |
| 06/14/2001 | WO2001042427A1 Oil-degrading microorganism and utilization thereof |
| 06/14/2001 | WO2001042150A1 Method and installation for treating effluents, comprising an additional treatment of the sludge by ozonisation |
| 06/14/2001 | WO2001042146A1 Method and device for treating water by oxygenation |
| 06/14/2001 | WO2001042142A2 Method and device for treating waste water |
| 06/14/2001 | CA2292244A1 Bioreactor systems for biological nutrient removal |
| 06/13/2001 | EP1105726A1 APPARATUS AND METHOD FOR MEASURING NO x? AND NITRIFICATION/DENITRIFICATION RATES IN BIOCHEMICAL PROCESSES |
| 06/13/2001 | DE19956948A1 Growth and/or immobilizing devices for microorganisms for use in air- or water-treatment biofilters comprise a porous body made from a by-product from natural fiber recovery processes and a completely biodegradable binder |
| 06/13/2001 | DE19952135A1 Verfahren zur Behandlung von Abwasser A method of treating waste water |
| 06/13/2001 | DE10004077C1 Water aeration assembly for ponds has submersible support frame facilitating easy lifting to surface for repositioning |
| 06/13/2001 | CN2434301Y Sludge vertical back-flow limited aeration sedimentation tank |