| Patents for C02F 3 - Biological treatment of water, waste water, or sewage (46,453) |
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| 03/25/1997 | US5614097 Compositions and method of use of constructed microbial mats |
| 03/25/1997 | US5614086 Method and apparatus for removing contaminants from a water supply |
| 03/19/1997 | CN1145612A Process for the treatment of wast water containing organic and inorganic compunds |
| 03/19/1997 | CN1145335A Water feeding and discharging system |
| 03/18/1997 | US5611928 Process for treating waste water |
| 03/18/1997 | US5611927 System for removing nutrients from wastewater |
| 03/18/1997 | US5611926 Water treatment device |
| 03/13/1997 | WO1997009551A1 Sewage treatment system |
| 03/13/1997 | WO1997009276A1 Waste treatment and minimization system |
| 03/13/1997 | DE19533370A1 Process and assembly mineralise entire sludge load in eutrophic surface waters |
| 03/13/1997 | DE19533175A1 Belüftete Mehrkammer-Kleinkläranlage zur biologischen Behandlung von Abwasser Ventilated multi-chamber septic system for biological treatment of sewage |
| 03/12/1997 | EP0761608A2 Method of producing secondary metabolites |
| 03/12/1997 | EP0761607A1 Method of biologically removing nitrogen and system therefor |
| 03/12/1997 | EP0761606A2 Small clarification plant with a compact construction |
| 03/12/1997 | EP0761605A1 Stirred tank bioreactor |
| 03/12/1997 | EP0761294A1 Aerator |
| 03/12/1997 | EP0761277A1 Submerged aerated filter |
| 03/12/1997 | EP0606432B1 A reactor |
| 03/12/1997 | EP0573626B1 Aeration reactor |
| 03/12/1997 | EP0569372B1 Waste handling method |
| 03/12/1997 | CN2249239Y Microporous changeable aeration device |
| 03/12/1997 | CN1144777A Sewage purification method and device |
| 03/11/1997 | US5610062 Dispersant solutions for dispersing hydrocarbons |
| 03/11/1997 | US5609768 Process for separating and/or recovering hydrocarbon oils from water using biodegradable absorbent sponges |
| 03/11/1997 | US5609754 Secondary sewage treatment system |
| 03/11/1997 | US5609753 Biofilter |
| 03/11/1997 | US5609733 System and method for converting toxic washwater to distilled water |
| 03/06/1997 | WO1997008302A1 Process for chemical modification of reactants by microbes |
| 03/06/1997 | WO1997008106A1 Soil and water remediation and enhancement process and apparatus therefor |
| 03/06/1997 | WO1997008105A1 Method for removing nitrogen compounds and for remineralizing weakly mineralized water |
| 03/06/1997 | WO1997008104A1 Process for purifying waste water |
| 03/06/1997 | WO1997008098A2 In situ thermally enhanced biodegradation of petroleum fuel hydrocarbons and halogenated organic solvents |
| 03/06/1997 | DE19630370A1 Recovering metals from biodegradable organic material e.g. oil-contaminated grinding wastes |
| 03/06/1997 | DE19531801A1 Porous carrier for immobilisation of microorganisms for microbiological processes |
| 03/06/1997 | CA2230601A1 Process for purifying sewage |
| 03/06/1997 | CA2229727A1 Process for chemical modification of reactants by microbes |
| 03/06/1997 | CA2228630A1 Soil and water remediation and enhancement process and apparatus therefor |
| 03/06/1997 | CA2227965A1 Method for removing nitrogen compounds and for remineralizing weakly mineralized water |
| 03/05/1997 | EP0699096B1 A chemical-biological process for dehalogenation of halogenated organic compounds |
| 03/05/1997 | EP0639100B1 Continuous-belt separator/reactor and method |
| 03/05/1997 | CN2248710Y Equipment for aerobic and anaerobic phosphorous and nitvogen remeving needing no refluxing pump |
| 03/05/1997 | CN2248709Y Bio-suitability color elastic wave cubic packings |
| 03/05/1997 | CN1144535A Micro-organism culture method |
| 03/05/1997 | CN1144196A Biological cell purifying equipment and method |
| 03/04/1997 | CA2105808C Apparatus for aerating liquids |
| 02/27/1997 | WO1997007064A1 Magnetic separation |
| 02/27/1997 | WO1997007063A1 Filtration medium |
| 02/27/1997 | DE19530625A1 Arrangement for aerating waste water with small air bubbles |
| 02/27/1997 | DE19529021C1 Neue sulfatreduzierende Bakterienstämme und deren Verwendung zur Dekontamination von schwefelsauren, metallbeladenen und radioaktiv verseuchten Wässern New sulfate-reducing bacteria strains and their use for the decontamination of sulfuric acid, metal-laden and radioactively contaminated waters |
| 02/27/1997 | CA2229584A1 Magnetic separation |
| 02/26/1997 | EP0759015A1 Wastewater pretreatment tank assembly |
| 02/26/1997 | CN1143942A Process and device for simultaneous biological elimination of phosphorus and nitrogen from waste water |
| 02/26/1997 | CN1143941A Method of operating sequencing batch reactor |
| 02/26/1997 | CN1143940A Waste treatment plant and process |
| 02/25/1997 | US5605653 Liquid circulation apparatus |
| 02/25/1997 | US5605629 Directing waste water through series of submerged biofilters under alternating anaerobic and aerobic conditions |
| 02/20/1997 | WO1997006110A1 Method and device for digestion of sludge |
| 02/20/1997 | WO1997006107A1 Method for biodepolluting effluents with high concentrations of pollutants, and strain selection process usable with said method |
| 02/19/1997 | EP0758680A2 Carrier for immobilizing microorganisms, and method for converting nitrogen compounds in a liquid using the same |
| 02/19/1997 | EP0758627A2 Water treating method and apparatus treating waste water by using ion exchange resin |
| 02/19/1997 | CN2247657Y Automatic swing filler |
| 02/18/1997 | US5603842 Process for treatment of sludge |
| 02/18/1997 | US5603833 Holding mixed liquor of wastewater and activated sludge in stressed contact zone for period of time, mixing and aerating in luxury contact zone, separating sludge, returning to stressed contact zone |
| 02/18/1997 | US5603832 Using a bioreactor containing denitrifying bacteria |
| 02/13/1997 | WO1997005237A1 Sulphate-reducing bacterial strains and their use in the decontamination of water contaminated with sulphuric acid, metals and radioactive substances |
| 02/13/1997 | WO1997005072A1 Biological water treatment plant for producing drinking water |
| 02/13/1997 | WO1997005071A1 Process for the biological decontamination of contaminated material |
| 02/13/1997 | WO1997005070A1 Facility for the biochemical purification of effluent |
| 02/13/1997 | WO1997004859A1 Submarine-type liquid mixer |
| 02/13/1997 | CA2228063A1 New sulfate-reducing bacteria strains and their use for decontaminating sulfuric-acid, metal-containing, radioactively contaminated water |
| 02/12/1997 | CN2247172Y Anaerobic acid-production device |
| 02/11/1997 | US5602296 Process for in-situ bidegradation of chlorinated aliphatic hydrocarbons by subsurface hydrogen injection |
| 02/11/1997 | US5602065 Calcining raw materials and microorganisms; oxidation resistance |
| 02/11/1997 | US5601724 Method of aeration of liquids |
| 02/11/1997 | US5601719 Introducing wastewater into anoxic zone for bacterial denitrification, passing to oxic zone for bod oxidation, luxury phosphorus uptake and nitrate formation, then to anaerobic zone with substrate to release stored phosphorus |
| 02/06/1997 | WO1997003927A1 Method and apparatus for contacting gas and liquid |
| 02/06/1997 | CA2226976A1 Method and apparatus for contacting gas and liquid |
| 02/05/1997 | EP0757017A2 Method to monitor in liquids the concentration of substances which are degraded by acidifying or alkalizing microorganisms and related instrumentation |
| 02/05/1997 | EP0598752B1 A process of and apparatus for treating a fluid |
| 02/05/1997 | CN2246664Y Rotary disk of solarisation device |
| 02/05/1997 | CN2246663Y Composite packing |
| 02/05/1997 | CN2246662Y Gauze self-rotating elastic packing |
| 02/05/1997 | CN1141887A High-disperse-system, reverse aerating activated sludge process |
| 02/05/1997 | CN1141885A Device for in-tube gas dilation and dissolving |
| 02/04/1997 | US5599452 Wastewater treatment method |
| 02/04/1997 | US5599451 Anaerobic and aerobic integrated system for biotreatment of toxic wastes (canoxis) |
| 02/04/1997 | US5599450 Anaerobic upflow batch reactor |
| 02/04/1997 | US5599443 Tank having supports for growing aquatic plants and containers of charcoal which support growing microorganisms |
| 02/04/1997 | US5599402 In situ flushing with aqueous solution of hydrolases and proteolytic enzymes |
| 02/02/1997 | CA2182433A1 Method to monitor in liquids the concentration of substances which are degraded by acidifying or alkalizing microorganisms and related instrumentation |
| 01/30/1997 | WO1997003201A1 Detection and biodegradation of explosives |
| 01/29/1997 | EP0755730A1 Method for decontaminating soils and waste containing iron oxides and heavy metals |
| 01/29/1997 | EP0507960B1 Method of fractionizing water molecule cluster, water-soluble mineral containing solution used for this fractionizing method and method of producing the mineral containing solution |
| 01/28/1997 | US5597730 Process for the degradation of coal tar and its constituents by white rot fungi |
| 01/28/1997 | US5597491 Direct delivery in-situ diffuser cleaning |
| 01/28/1997 | US5597484 Metal removal from aqueous solution |
| 01/28/1997 | US5597402 Self-regulated biological scrubber and/or gas stripper for the treatment of fluid streams |
| 01/23/1997 | WO1997002217A1 Microbiological degradation of alkylene amine acetates |
| 01/22/1997 | EP0702663B1 Process for purifying sulphide-containing waste water |
| 01/22/1997 | EP0627957B1 Process for purification of drinking water or waste water and/or gas |