| Patents for C02F 3 - Biological treatment of water, waste water, or sewage (46,453) |
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| 11/12/1992 | WO1992019548A1 Biological nitrification/denitrification water treatment plant and method |
| 11/12/1992 | WO1992019547A1 Wastewater treatment system |
| 11/12/1992 | WO1992019546A1 Apparatus for the gasification of liquids |
| 11/12/1992 | DE4122804A1 Final sewage cleaning stage - has container with floating broken slate in anaerobic filter action |
| 11/12/1992 | DE4114865A1 Biological treatment reactor - has injector formed at entry to pptn. tube section for removal of suspended matter without blockage |
| 11/12/1992 | DE4114694A1 Biological waste-water treatment - with comminution and aeration of recycle activated sludge to prevent bulking sludge formation |
| 11/12/1992 | DE4114667A1 Animal waste processing - by collecting methane gas from manure container as fuel and manure is spun and drying while steam is condensed and returned to water supply |
| 11/11/1992 | WO1992020628A1 Anaerobic digestion process |
| 11/11/1992 | EP0512447A1 Apparatus for aeration of waters |
| 11/11/1992 | EP0512410A1 Process and apparatus for eliminating contaminants from water |
| 11/11/1992 | CN2121449U Hidden sucking double-jet aeration unit |
| 11/11/1992 | CN2121448U Butterfly type combined filler |
| 11/11/1992 | CA2068101A1 Secondary treatment of an integrated paper mill effluent |
| 11/10/1992 | US5162083 Individual home wastewater treatment plant conversion apparatus |
| 11/07/1992 | CA2041842A1 Biological waste water treatment |
| 11/05/1992 | DE4114386A1 Waste water cleaning |
| 11/04/1992 | CN2120803U Upstream anaerobic biotic filter |
| 11/04/1992 | CN2120802U Curve type packing |
| 11/03/1992 | US5160705 Apparatus for fluidizing granular material |
| 11/03/1992 | US5160622 Method for filtering aquarium water |
| 11/03/1992 | US5160621 Aeration tank system |
| 11/03/1992 | US5160620 Method and apparatus for treating water |
| 11/03/1992 | US5160607 Filter for aquarium |
| 11/03/1992 | US5160525 Bioremediation enzymatic composition |
| 11/03/1992 | US5160488 Bioremediation yeast and surfactant composition |
| 11/03/1992 | US5160460 Ventilation system for a liquid-filled basin |
| 11/03/1992 | US5160458 Gas injection apparatus and method |
| 11/03/1992 | US5160438 Method and means of sampling large regions of liquid for pollution or biological activity using bubbles |
| 11/03/1992 | US5160435 Method and system for bio-mass management of a trickling filter |
| 11/03/1992 | US5160395 Method of manufacturing biological water treatment contact material |
| 11/03/1992 | US5160043 Method of exhausting dissolved oxygen in a nitrogen removal wastewater treatment process |
| 11/03/1992 | US5160039 Bio-tube aquatic filter |
| 10/29/1992 | WO1992018429A1 System for separating biological sludge from purified water |
| 10/29/1992 | WO1992018234A1 Blowing a gas into a granular filter bed |
| 10/29/1992 | CA2106213A1 Blowing a gas into a granular filter bed |
| 10/28/1992 | EP0511024A2 A method of, and apparatus for, continuously monitoring the level of a constituent of a flow |
| 10/28/1992 | EP0510328A2 Apparatus for treating activated sludge |
| 10/28/1992 | CN1065645A Aerobic-facultative-anaerobic purifing method and device for high-concentration organic waste water |
| 10/27/1992 | WO1992019373A1 Amoebae/bacteria consortia and uses for degrading wastes and contaminants |
| 10/27/1992 | US5159694 Portable reactor for carrying out gas-evolving biotechnological processes or gas consuming processes while maintaining a packed fixed-bed arrangement |
| 10/27/1992 | US5158037 Device for raising aquatic animals |
| 10/22/1992 | DE4140915A1 Control system for sewage treatment plant with single-stage activation tank - using fuzzy logic computer to derive regulating value, e.g. for rate of oxygen addn. from inexact measured and input data |
| 10/22/1992 | DE4113000A1 Bio-gas fermentation appts. - has cleaners at the mixers to prevent build-up on heat exchanger wall |
| 10/22/1992 | DE4112486A1 Gas distributor with lifting system for aeration of water in pond - has distributor fitted with floats and hinged supports which when in vertical position hold parts requiring maintenance above water |
| 10/22/1992 | DE4112391A1 Optimising chemical usage in flocculation process - for removing residual phosphorus and suspended matter from clarification plant discharge |
| 10/22/1992 | DE4112378A1 Fluid degassing appts. - has height adjustable deflection hood at upper end of the rising tube to carry gas channels |
| 10/22/1992 | DE4112377A1 Compact reactor for aerobic biological waste water purificn. - has reaction chamber connected to post-clarifier by vertical circulation system with central riser pipe and pump |
| 10/21/1992 | EP0509609A1 Method and apparatus for processing manure |
| 10/21/1992 | EP0509601A1 Process for treating effluents resulting from yolky wool-scouring processes |
| 10/21/1992 | EP0509152A1 Method and apparatus for processing manure |
| 10/21/1992 | CN2119420U Multi-stage jet sectional tower for biology oxidation |
| 10/21/1992 | CN2119419U Porous composite filling |
| 10/20/1992 | US5156742 Primary settling zone then aeration zone |
| 10/20/1992 | US5156741 Aggregate-filled bed enclosed by a water impervious barrier used to receive and cleanse the wastewater using the roots of turf grass grown on top of the bed |
| 10/20/1992 | CA1309193C Aerator and aerobic biological treatment process using same |
| 10/19/1992 | WO1992018442A2 Portable system for treating human waste |
| 10/19/1992 | CA2102219A1 Portable system for treating human waste |
| 10/18/1992 | CA2066466A1 Method and apparatus for processing manure |
| 10/15/1992 | DE4111849A1 Dewatering of biomasses contg. bacteria - by drying with superheated steam, esp. for sewage sludge giving storage stable free-flowing prod. for e.g. fuel |
| 10/15/1992 | DE4111375A1 Purificn. of pretreated waste water - contg. heavy metals and/or nitrite(s), by anaerobic treatment |
| 10/14/1992 | EP0507960A1 Method of fractionizing water molecule cluster, water-soluble mineral containing solution used for this fractionizing method and method of producing the mineral containing solution |
| 10/14/1992 | CN2118730U Multi-hole plate type diffuser aerator |
| 10/14/1992 | CN1018630B Technology for mesophilic digestion and high-temp. process of city excrement |
| 10/14/1992 | CN1018618B Plastic filler used for the bio-fluidized bed and floating-medium filtering chamber |
| 10/14/1992 | CN1018617B Bio-chemical fluidized bed with floating granules |
| 10/13/1992 | WO1992018609A1 Membranes with immobilized microorganisms thereon and/or therein, process for obtaining such membranes, reactor comprising said membranes and process involving the use of said membranes, in particular for the elimination of metals or the degradation of xenobiotic organic compounds |
| 10/13/1992 | US5154832 Degassing water systems |
| 10/07/1992 | EP0507073A1 Installation for biological elimination of noxious substances from polluted waste waters |
| 10/07/1992 | CN1065054A Apparatus for treating activated sludge |
| 10/06/1992 | US5152888 Apparatus for treatment of organic waste water and contactor for use therein |
| 10/06/1992 | US5152060 Useful as a heat exchanger |
| 10/06/1992 | CA1308498C Biological activator for a septic tank |
| 10/06/1992 | CA1308408C Diffusion device |
| 10/05/1992 | WO1992017410A1 Method for removing sulphur compounds from water |
| 10/01/1992 | DE4110026A1 Biological waste water clarifier with inert gas recirculation - in which gas is circulated through vessel so that oxygen@ content is reduced and water is agitated without introducing oxygen@ |
| 10/01/1992 | DE4109815A1 Biological treatment of waste waters - with aeration of recycle sludge in a separate tank fed with waste water with high ammonium content |
| 10/01/1992 | DE4109732A1 Verfahren zum reinigen von abluft A method for purifying exhaust air |
| 09/30/1992 | EP0506587A1 Flow rate controlling device having integrated aeration |
| 09/30/1992 | EP0428537B1 Process and plant for the biological purification of waste water |
| 09/30/1992 | CN2117376U Closed pure oxidgen aerator |
| 09/30/1992 | CA2064298A1 Liquid flow control device with integral aerator |
| 09/29/1992 | WO1992017278A1 Cyclone with double acting extraction system |
| 09/29/1992 | US5151197 Fluid treatment |
| 09/29/1992 | US5151187 Aeration an oxidizable material in the presence of activated sludge, fluid flow through membranes and separation water |
| 09/29/1992 | US5150988 Combination vibrator, aerator, and liquid-injection system |
| 09/29/1992 | CA2107087A1 Cyclone with double acting extraction system |
| 09/29/1992 | CA1308035C Floating decanter |
| 09/27/1992 | WO1992017409A1 Method and device for biologically treating fluids to be decontaminated |
| 09/27/1992 | CA2106961A1 Device and depolluting biological process for fluids |
| 09/26/1992 | WO1992016283A1 Process for cleaning exhaust air |
| 09/26/1992 | CA2106983A1 Process for purifying exhaust air |
| 09/24/1992 | DE4207084A1 Reactor for biological waste water purification |
| 09/23/1992 | EP0504597A2 Water purifying apparatus |
| 09/23/1992 | CN2116689U Rotational flow type waste water anaerobic reactor |
| 09/23/1992 | CN2116688U Hose aerator of stretch |
| 09/23/1992 | CN1064664A Method for treating industrial waste water by powdered coal ash sorption |
| 09/17/1992 | WO1992015834A1 Method for cleaning of heat exchangers |
| 09/17/1992 | WO1992015667A1 Biological reaction processes |
| 09/17/1992 | WO1992015530A1 Mobile water decontamination apparatus |
| 09/17/1992 | DE4208148A1 Anaerobic decomposition of sludge - by directing sludge stream by nozzle into vertical venturi pipe and circulating and mixing sludge in container |