Patents
Sitemap › C02 - Treatment of water, waste water, sewage, or sludge › C02F - Treatment of water, waste water, sewage, or sludge › C02F 3 - Biological treatment of water, waste water, or sewage
Patents for C02F 3 - Biological treatment of water, waste water, or sewage (46,453)
11/2000
11/30/2000WO2000071224A1 Reciprocating biological filter
11/30/2000WO2000070943A1 Method for improving conditions in closed circuit fish farming
11/30/2000WO2000061504A3 System for collecting, transporting and recycling domestic sewage, biowastes, black waters and other biodegradable substances
11/30/2000DE19924283A1 Filter bed for aerobic and anaerobic biological degradation of nitrogen compounds in sewage has meters for measuring oxygen content and/or redox potential of sewage attached to sweeper for removing sedimented sludge
11/30/2000DE19923796A1 Treatment of waste water for recycling within an industry, is achieved by sand filtration followed by conventional processes, with use of waste water for filter flushing
11/30/2000CA2375116A1 Method for improving conditions in closed circuit fish farming
11/30/2000CA2373372A1 Novel phytochelatin synthases and uses therefor
11/29/2000EP1055651A2 System and process for treating animal waste
11/29/2000EP1054840A1 Wastewater treatment plant comprising upflow anaerobic reactor, and wastewater treatment method using thereof
11/29/2000CN2408112Y Decanter for water
11/29/2000CN1058946C Vertical retained aeration sewage treatment process and device
11/28/2000US6153416 Immobilization of microbial cells and enzymes in calcium alginate-polyethylene glycol-polyethylene imide beads
11/28/2000US6153099 Biological waste treatment process and apparatus
11/28/2000US6153094 Wastewater treatment method and apparatus
11/23/2000WO2000069779A1 Method, device and use of said method for biological elimination of metal elements present in an ionized state in water
11/23/2000WO2000015565B1 Fluidized radial flow bioreactor utilizing pellet media
11/23/2000DE19921443A1 Verfahren zur Reinigung von Abflußrohren für fetthaltige Abwässer Process for purifying waste pipes for fatty waste water
11/22/2000EP1053977A1 Device and process for aerobic waste water treatment
11/22/2000EP0951451A4 Secondary sewage treatment system
11/22/2000EP0946430A4 A diffuser for aerating a fluid
11/22/2000CN2407000Y Rotary aeration disc
11/22/2000CN2406998Y Multifunctional sewage treating apparatus with multiple oxidizing ducts
11/22/2000CN2406997Y Aeration film
11/22/2000CN2406996Y Fusiform suspended packings
11/22/2000CN1273946A Process for treating sewage water and/or sludge
11/22/2000CN1273944A Process for treating waste water or sewage with powdered coal ash
11/21/2000US6149880 Method and apparatus for treating aqueous medium containing organic matter
11/16/2000WO2000068155A1 Method for cleaning drains for fatty waste water
11/16/2000WO2000067886A1 Gas/liquid mixing apparatus and method
11/16/2000WO2000067876A1 A multi-layer recirculating filter wastewater treatment apparatus
11/16/2000DE19920010A1 Anaerobically digested sludge subjected to aerobic treatment reducing volume of sludge for final disposal and costs
11/16/2000CA2380021A1 Method for cleaning drains for fatty waste water
11/16/2000CA2369659A1 A multi-layer recirculating filter wastewater treatment apparatus
11/15/2000EP1052228A1 Process for cleaning waste water and plant therefore
11/15/2000EP1051361A1 Waste water treatment, media therefor and its manufacture
11/15/2000EP1037710A4 Method and apparatus for lysing sludge and dividing solids in liquid suspension
11/15/2000EP0912450A4 Multi-phase dual cycle influent process
11/15/2000CN2405931Y Adjustable telescopic-tube type draining device
11/15/2000CN2405930Y Trailing type filler floating bed
11/15/2000CN2405929Y Integrated membrane biological reaction apparatus
11/14/2000US6146896 Evaluating nitrogen fixation efficiency of sewage; supplying sewage, nitrifying bacteria, aqueous solution, oxygen, and a suppressor to vessel, allow oxygen consumption, measure oxygen by comparison between separate vessels
11/14/2000US6146532 Membrane separation of undissolved substances; aerobic and anaerobic fermentation
11/14/2000US6146531 Process and apparatus for biologically treating water
11/14/2000US6146521 Apparatus and method for ozone-treating biosludges
11/14/2000US6145817 Water aerating device or diffuser
11/14/2000US6145815 System for enhanced gas dissolution having a hood positioned over the impeller with segregating rings
11/09/2000WO2000066503A1 Aeration pond with oxygen recycling
11/09/2000WO2000066502A1 Active purifying structures for lining and forming compact physico-biological filters
11/09/2000WO2000066501A1 Filtered sanitation system
11/09/2000WO2000065902A1 Method of sequestering carbon dioxide
11/08/2000EP1050334A1 Typhon mixer
11/08/2000CN2404876Y Container type equipment for automatic and high efficiency wastewater treatment
11/08/2000CN1272464A Multifunctional high-effetive biological rotating cage
11/08/2000CN1058251C Method for treatment of sulfur-containing organic waste water and gas purifying special equipment-gas balancing apparatus
11/07/2000US6143246 Apparatus for measuring ammonia in biochemical processes
11/07/2000US6143187 Improved fluidized bed filters effective in the removal of nitrogenous wastes from aquaculture system; filter comprises a cylinder having an inlet port, water is pumped into the inlet port, force of water fluidizes filter medium
11/07/2000US6143177 Bioremediation of groundwater by supplying carbohydrates and sulfates to an injection well where microorganisms metabolize the carbohydrates, creating sulfate reducing and methanogenic conditions so chlorinated hydrocarbons are reduced to ethene
11/07/2000US6143176 By anaerobic digesting to form methane gas and a fermentation slurry; a hydrothermal treatment of the slurry to generate a solid char having high heat content, oils, and aqueous phase; separating the aqueous phase which is returned to digester
11/07/2000US6143058 Adsorbent construction and method
11/07/2000CA2180016C Two-phase anaerobic digestion of carbonaceous organic materials
11/02/2000WO2000064564A1 Aerator for septic system
11/02/2000EP1049107A1 Substance activating method and device
11/02/2000DE19918695A1 Papermaking water effluent mixed with oxygen in vortex rendering water fit for re-use to reduce supply and effluent charges
11/01/2000CN2403494Y Air lift air stirring reactor
11/01/2000CN1271692A Process for treating high-concentration sewage
11/01/2000CN1271691A Two-stage aerobic biological process for treating sewage
10/2000
10/31/2000US6140106 Microorganism which produces proteases and amylases for wastewater treatments, agricultural utilization, laundering and dish detergents, drain cleaning and spot removing
10/31/2000US6139963 Polyvinyl alcohol hydrogel and process for producing the same
10/31/2000US6139745 Purification apparatus
10/31/2000US6139743 Wastewater treatment apparatus for removing nitrogen and phosphorus and method therefor
10/31/2000CA2161643C Improvements in bioremediation of hydrocarbon contaminated soils and water
10/31/2000CA2004817C Method and apparatus for treating water
10/26/2000WO2000063128A1 Method and apparatus to establish and optimize sedimentation and methane fermentation in primary wastewater ponds
10/26/2000WO2000063125A2 Method for conditioning water contaminated with halogenated hydrocarbons
10/26/2000DE19932903A1 Verfahren zur biologischen Abwasserreinigung unter Verwendung eines Wirbelbettes in einem Bioreaktor A process for biological wastewater treatment using a fluidized bed in a bioreactor
10/26/2000DE19917955A1 Continuous monitoring of an aerobic environmental biotechnology process using a flow system comprises using microorganisms from the process itself
10/26/2000DE19917463A1 Compact small-scale waste water treatment plant for country districts is flexible at high and low volume rates and requires less energy
10/26/2000DE19916381A1 Small-scale waste water treatment process has buffer stage to receive effluent water for efficient operation under extreme variations of volume flow
10/25/2000CN2402745Y Integrated biological septic tank
10/25/2000CN2402673Y Parallel sewage regenerating purifying reactors
10/25/2000CN2402672Y Electrically driven impeller aerator
10/24/2000US6136589 Pseudomonas putida tolerant organic solvent
10/24/2000US6136194 Lagoon-type water treatment system including a covered aerobic reactor cell and a covered quiescent anaerobic reactor cell whereby covering the cells controls temperature to enhance reaction kinetics
10/24/2000US6136193 Anaerobically treating organic sulfides in wastewater with a thiobacillus to convert sulfides to sulfur in biomass and reduce oxygen demand of wastewater; water/air pollution control
10/24/2000US6136185 Aerobic biodegradable waste treatment system for large scale animal husbandry operations
10/24/2000US6135430 Enhanced gas dissolution
10/19/2000WO2000061822A1 Compositions and methods for removing pollutants from contaminated materials
10/19/2000WO2000061505A1 Method for purifying the water
10/19/2000WO2000061504A2 System for collecting, transporting and recycling domestic sewage, biowastes, black waters and other biodegradable substances
10/19/2000WO2000061503A1 Soil water activated sludge treating system and method therefor
10/19/2000WO2000061502A1 Method for biologically purifying waste water, using a fluidised bed in a bioreactor
10/19/2000WO2000037366A8 Method and installation for sanitizing surface water
10/19/2000DE19914204A1 Apparatus for the biological purification of liquids comprises a set of spiral blades arranged in opposed pairs with a central opening
10/18/2000EP1044169A1 Water reclamation system for a vehicle wash system
10/18/2000EP1044168A1 Polylactate release compounds and methods of using same
10/18/2000EP1044166A1 Method for removing hydrophobic impurities using cleavable nonionic surfactants
10/18/2000CN2401544Y Aerator for water treatment channel
10/18/2000CN2401543Y Improved biological carbon fluidized bed spherical padding
10/18/2000CN2401253Y Ecological filter for open water pool
10/17/2000US6133004 Bioreactor carrier gel prepared from a crosslinked N-vinylcarboxamide resin
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