| Patents for C02F 3 - Biological treatment of water, waste water, or sewage (46,453) |
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| 07/22/1992 | CN2110633U Pore changeable piled filling |
| 07/21/1992 | CA1305568C Equipment for the anaerobic purification of waste water |
| 07/16/1992 | DE4125319C1 Textile for support of microorganisms or catalyst in (an)aerobic sewage treatment - comprises strips joined with catalyst or microorganisms, with wide non-supporting spacer strips between them |
| 07/16/1992 | DE4111936C1 Rapidly installed sewage treatment plant - has concrete foundation, from which supports extend vertically to roof over plant cylindrical chambers with supply line |
| 07/16/1992 | DE4100983A1 Vorrichtung zur biologischen reinigung von abwasser Device for biological purification of waste water |
| 07/15/1992 | EP0494836A1 Process for purifying aqueous solutions polluted by nitrate ions |
| 07/15/1992 | EP0494399A1 Process to direct and treat production waters in a paper factory with installation for treatment of waste paper |
| 07/15/1992 | CN2110015U Sewage anaerobic treatment device |
| 07/15/1992 | CN2110014U Efficience anaerobic mixing reaction apparatus |
| 07/14/1992 | CA1304917C Apparatus for the introduction of a fluid in reception devices, such as those used for the treatment of liquids, like water |
| 07/09/1992 | WO1992011211A1 Apparatus for treating a fluid with a treatment medium |
| 07/09/1992 | WO1992011210A1 Treatment of wastes |
| 07/09/1992 | CA2098088A1 Treatment of wastes |
| 07/09/1992 | CA2058841A1 Process for removing polluting nitrate ions from aqueous solutions |
| 07/08/1992 | EP0493727A1 Reactor and process for the continuous mechanical and anaerobic biological purification of waste water containing solids |
| 07/08/1992 | EP0463062A4 Bioslurry reactor for treatment of slurries containing minerals, soils and sludges |
| 07/08/1992 | CN2109390U Hole passing turbulent flow aerator |
| 07/08/1992 | CN1062517A Comprehensive treatment technology for waste sizing liquid |
| 07/08/1992 | CN1017332B Rural methane generating pit |
| 07/07/1992 | US5128051 Method for the control of biofouling |
| 07/07/1992 | US5128040 Trickling filter |
| 07/07/1992 | CA1304839C Aeration type water treating device |
| 07/02/1992 | DE4041242A1 Biological water cleaning plant basin - has inserts in the base of coarse grain material to increase the cleaning action and prevent overflow |
| 07/02/1992 | DE4041241A1 Biological waste water cleansing basin - has guides to impose a vertical component on the horizontal flow path |
| 07/01/1992 | EP0493248A1 Composition for decontaminating polluted soil,process and device for the use of this composition |
| 07/01/1992 | EP0492690A1 Process and apparatus for water treatment with a granular bed for filtration or for filtration associated with a biological purification of water |
| 06/30/1992 | US5126073 Biodegradable emulsifying composition containing fatty alcohol polyglycol ethers |
| 06/30/1992 | US5126051 Enzymatic decomposition of drilling mud |
| 06/30/1992 | US5126050 Granular activated carbon-sequencing batch biofilm reactor (GAC-SBBR) |
| 06/30/1992 | US5126049 Precipitation of formed ammonium ions as struvite |
| 06/30/1992 | US5126042 Floating media biofilter |
| 06/30/1992 | US5125546 Flow discharge valve |
| 06/30/1992 | CA1304307C Biodegradation of halogenated aliphatic hydrocarbons |
| 06/25/1992 | WO1992011100A1 Biological composition for decontaminating polluted soils, process and device for making use of same |
| 06/25/1992 | WO1992010432A1 Process and device for dissolving a gas in a liquid |
| 06/25/1992 | DE4142890A1 Biological cleaning by homogenising and filtering - is useful for treating waste waters, fats and oils etc., and reduces cleaning time with no residue formation |
| 06/25/1992 | DE4041820A1 Biological nitrification of waste water - by gasification with mixt. of air and carbon di:oxide obtd. from combustion of bio-gas in internal combustion engine |
| 06/25/1992 | CA2076036A1 Biological composition for decontaminating polluted soils, process and device for making use of same |
| 06/24/1992 | EP0490910A1 Process and apparatus for a biological reactor to purify water |
| 06/24/1992 | EP0450047A4 Polymer bead containing immobilized metal extractant |
| 06/24/1992 | CN1017140B Compound accelerator for anaerobic digestion and its productive process |
| 06/24/1992 | CN1017138B Process for treatment of sewage by using artificial water plants in oxidizing ditches |
| 06/23/1992 | US5124085 Cowling for a rotary surface aerator used for the aeration of tanks intended for water treatment |
| 06/23/1992 | US5124039 Using gaseous reducing agents |
| 06/23/1992 | CA1304176C Sewage oxygenating device |
| 06/23/1992 | CA1304175C Method of, and installation for, purifying liquids using a throughflow-controlled aquatic plant-containing filter bed |
| 06/23/1992 | CA1304031C Microbial catabolism of tertiary butyl alcohol |
| 06/22/1992 | WO1992011212A1 Process and device for biologically purifying substances |
| 06/22/1992 | CA2074804A1 Process and apparatus for the biological purification of substances |
| 06/22/1992 | CA2057364A1 Process of and water treatment reactor using a granular bed for filtration purposes of filtration related to biological purification of water |
| 06/17/1992 | CN2107464U Hedgehog type filling |
| 06/16/1992 | US5122266 Apparatus for advanced aquaculture life support |
| 06/11/1992 | WO1992010431A1 Improved waste water treatment |
| 06/11/1992 | WO1992009360A1 Gas particle formation |
| 06/10/1992 | EP0489626A1 Reactor for biological oxidation and reduction; process for biofiltration and process for rinsing the reactor |
| 06/10/1992 | EP0489449A1 Process for the aeration of waste water |
| 06/10/1992 | EP0489414A1 Process and apparatus for raising the gas concentration in water |
| 06/10/1992 | EP0489231A1 Aerator for liquids |
| 06/09/1992 | US5120442 Aerobic degradationof biodegradable contaminants using microorganisms and oxidation of nonbiodegradable contaminants |
| 06/09/1992 | US5120441 Method for removal of metal atoms from aqueous solution using suspended plant cells |
| 06/09/1992 | CA1303260C Method of and apparatus for establishing and maintaining a dispersion of liquid and gaseous fractions |
| 06/09/1992 | CA1303259C System and method for treating pulp and paper mill waste water |
| 06/05/1992 | WO1992010270A1 Process for the removal of sulphur compounds from gases |
| 06/03/1992 | EP0487705A1 Process for the removal of hydrogensulphide (h 2?s) from biogas. |
| 06/02/1992 | US5118415 Oxidation ditch velocity control system |
| 06/02/1992 | CA1302397C Method and apparatus for forming small bubbles in liquid |
| 05/29/1992 | WO1992008676A1 Waste water treatment plant |
| 05/29/1992 | WO1992008674A1 A method for treating an organic substance |
| 05/27/1992 | EP0486976A1 Device for the purification of polluted ground water |
| 05/27/1992 | EP0486748A1 Process and biofilm reactors for biological treatment of organically polluted waste water |
| 05/27/1992 | DE4105841C1 Bio-gas prodn. from manure - in a plant with three fermentation zones |
| 05/27/1992 | DE4037059A1 In-situ ground water purifying system - with shaft insert contg. aeration and filtration systems of simple and cheap construction |
| 05/27/1992 | CN2105489U Double turning disc |
| 05/26/1992 | US5116744 Microbial cyanide converting enzymes, their production and use |
| 05/26/1992 | US5116506 Biodegradation of halogenated hydrocarbons |
| 05/26/1992 | US5116505 Fluidized bed process |
| 05/26/1992 | US5116504 Organic polymer separation membrane having fluorene skeleton and oxygen enrichment device utilizing same |
| 05/26/1992 | US5116501 Paddlewheel aerator drive mechanism |
| 05/26/1992 | CA1301687C Carrier material for immobilizing microorganisms |
| 05/22/1992 | WO1992009533A1 Sewage purifying device of filter material circulation type |
| 05/22/1992 | CA2096523A1 Sewage purifying device of filter material circulation type |
| 05/21/1992 | DE4036921A1 Microbiological waste water treatment appts. - for prodn. of animal feed proteins, glues and biomass for micrological process |
| 05/21/1992 | DE4036548A1 Waste water purification by adsorption process - producing reduced amount of excess sludge that requires dewatering |
| 05/20/1992 | EP0486199A1 Wastewater treatment |
| 05/20/1992 | EP0486140A1 Anaerobic digester |
| 05/20/1992 | EP0485859A2 Rotating device with centrifugal sludge lifting for bioreactors |
| 05/20/1992 | EP0485524A1 Absorbent materials and use thereof. |
| 05/20/1992 | EP0474702A4 Wastewater treatment |
| 05/20/1992 | EP0354906B1 Biological dephosphatization and (de)nitrification |
| 05/20/1992 | EP0217854B1 Method for the monitoring and control of microbial populations |
| 05/20/1992 | CN1061201A Comprehensive processing method of tannery waste water |
| 05/19/1992 | US5114587 Method of sewage treatment |
| 05/19/1992 | US5114586 Sanitation system |
| 05/19/1992 | CA1301097C Microorganism for use in industrial processes |
| 05/14/1992 | CA2055022A1 Digester for organic waste effluents |
| 05/13/1992 | EP0485270A1 Apparatus for treating a fluid with gas such as an ozonisation of waste water |
| 05/13/1992 | EP0484867A1 Process for the utilization of organic wastes for producing biogas and agricultural products |
| 05/13/1992 | EP0484352A1 Process, installation and reactor for biological treatment of waste water |
| 05/13/1992 | EP0391895B1 Process for manufacturing fine-structured bodies |
| 05/06/1992 | EP0483312A1 Process for eliminating nitrates and phosphates in the biological purification of waste water. |