Patents for C02F 3 - Biological treatment of water, waste water, or sewage (46,453) |
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10/13/1993 | CN1022401C Treatment of restaurant sewage |
10/13/1993 | CN1022383C Pool for purifying water |
10/12/1993 | US5252616 Process for the manufacture of filler-modified polyurethane foam supports for bioconversion processes |
10/12/1993 | US5252483 Degradation of ferric chelates by a pure culture of agrobacterium sp. |
10/12/1993 | US5252231 Washing cycle by feeding the air, agitating, separating through sedimentation according to the difference in volumic mass |
10/12/1993 | US5252215 Adsorbent materials and use thereof |
10/12/1993 | US5252214 Biological dephosphatization and (de)nitrification |
10/11/1993 | CA2093597A1 A microorganism fertilizer, a method for manufacturing the microorganism fertilizer, and a method for utilizing the microorganism fertilizer |
10/10/1993 | CA2093765A1 Process for the biological treatment of wastewater |
10/07/1993 | DE4244612A1 Rotting tank bio-gas take=off - has controlled extraction rate to maintain inner pressure at ambient levels for tank which is not hermetically sealed |
10/07/1993 | DE4239184C1 Biological sewage phosphate removal - has initial stripper centrally in the stripper basin with separate zones for sludge to move in opposite directions |
10/06/1993 | EP0564386A1 Process and installation for sludge treatment by combined chemical and biological oxidation |
10/06/1993 | EP0564298A1 Method for treating organic sludge |
10/06/1993 | EP0563508A1 Apparatus for fine-bubble aeration of waste water |
10/06/1993 | EP0563434A1 Digester including sludge recirculator with gas supplement |
10/06/1993 | CN2143226Y Two stage fermenting apparatus with anaerobe |
10/06/1993 | CN2143225Y Converting air-liquid pressure contacting oxidizing column |
10/05/1993 | US5250102 Forming soluble sulfates |
10/05/1993 | US5249359 Process for manufacturing finely structured bodies such as heat exchangers |
10/04/1993 | CA2092501A1 Method for biodegrading acrylic monomers and acrylic oligomers by microorganisms |
10/01/1993 | CA2075349A1 Digester including sludge recirculator with gas supplement |
10/01/1993 | CA2064402A1 Flat bed reactor for biological cleaning of solids contaminated with toxic substances |
09/30/1993 | WO1993019013A1 Apparatus for activation of a digesting agent |
09/30/1993 | WO1993019012A1 A device for purifying sewage |
09/30/1993 | WO1993018800A1 Use of immobilized film reactor |
09/30/1993 | DE4235330C1 Aquarium filter - has mechanical cleaning stage and biological cleaning stage with moving bed of plastics granules for growing bacteria |
09/30/1993 | DE4210295A1 Ground and surface water decontamination - using lances in drillings with their upper ends flush with the ground to deliver decontaminating soln. |
09/30/1993 | CA2138271A1 Use of immobilized film reactor |
09/29/1993 | EP0562466A1 Method for simultaneous biological removal of nitrogen and of corresponding biomasses |
09/29/1993 | EP0561889A1 Process for the removal of sulphur compounds from gases. |
09/29/1993 | EP0561887A1 Improved waste water treatment. |
09/28/1993 | US5248424 Frameless array of hollow fiber membranes and method of maintaining clean fiber surfaces while filtering a substrate to withdraw a permeate |
09/28/1993 | US5248423 Process for the regulation of a device for the removal of pollutants from waste water |
09/28/1993 | US5248422 Process for treating wastewater to remove BOD and nutrients |
09/28/1993 | US5248419 Sewage sludge treatment with gas injection |
09/28/1993 | CA1322519C Method of cleaning exhaust gas of drying plants and an apparatus for implementing such method |
09/23/1993 | DE4208370A1 Prodn. of very fine gas bubbles from high-pressure gasified liq. - involves subjecting liq. to pressure considerably below its vapour pressure |
09/22/1993 | EP0561458A1 Process and apparatus for the purification of water |
09/22/1993 | EP0560981A1 System for treating organic wastes and waste water |
09/22/1993 | EP0560980A1 Membrane bioreactor system for treating synthetic metal-working fluids and oil-based products |
09/22/1993 | EP0542755A4 Rotating biological aquarium filter system |
09/22/1993 | CN2142459Y Hole helicoid |
09/22/1993 | CN1076488A Method for preparation of polyvinyl alcohol microbe or enzyme immobilization carrier and its use |
09/21/1993 | US5246585 Anaerobic and aerobic biodegradation |
09/21/1993 | US5246584 Method and apparatus for destroying organic contaminants in aqueous liquids |
09/16/1993 | WO1993017974A1 Effluent treatment systems |
09/16/1993 | WO1993017971A1 Materials and methods for enhanced photocatalyzation of organic compounds |
09/16/1993 | WO1993017970A1 Enzymatic processing of materials containing chromium and protein |
09/16/1993 | DE4208120A1 Microorganism carrier for anaerobic processing of sewage - comprises old tyres |
09/16/1993 | DE4207819A1 Technological use of fixed biological catalysts - in which catalyst is fixed to removable rotatable cylinder mounted in outer vessel |
09/16/1993 | DE4207560A1 Simultaneous removal of carbonate and denitrification of water - using calcium hydroxide as precipitant and biomass, supported on pptd. calcium carbonate, as denitrifying agent |
09/15/1993 | EP0560725A1 Process for purifying water |
09/15/1993 | EP0559857A1 Aerator for a liquid-filled basin. |
09/15/1993 | EP0386163B1 Process for separation |
09/14/1993 | US5244574 Liposomes |
09/09/1993 | DE4206785A1 Silicone elastomer hose for oxygenation of water, esp. in ponds. etc. - has outer dia. of greater than 4.5 mm and wall thickness not less than 0.5 mm, and expands to twice dia. under pressure of oxygen@ |
09/09/1993 | DE4206646A1 Industrial and communal sewage cleaning - by using a powder adsorption material mixt. with different cleaning functions to give sepd. clear water and sludge which is dried for recycling |
09/08/1993 | EP0559543A1 Process for the biological purification of effluents with a high concentration of ammoniacal nitrogen |
09/08/1993 | EP0558745A1 Sewage purifying device of filter material circulation type |
09/08/1993 | EP0558568A1 A method for treating an organic substance |
09/08/1993 | CN1075939A Method of and apparatus for treating of sewage and waste water by useing of fibriform biological film |
09/08/1993 | CN1075938A Membrane bioreactor system for treating synthetic metal-working fluids and oil-based products |
09/07/1993 | US5242626 Process for contacting gas and liquid |
09/07/1993 | US5242600 Water treatment by flotation |
09/07/1993 | US5242593 Method for reducing the build-up of slime and/or film in water circulation systems |
09/07/1993 | US5242592 Controlling oxygen supply in response to phosphate concentration independent of turbidity |
09/07/1993 | CA1321967C Production of cyanide hydratase |
09/07/1993 | CA1321966C Production of cyanide hydratase |
09/02/1993 | WO1993017193A1 Tensioned membrane cladding system |
09/02/1993 | WO1993016962A1 Apparatus for the purification of cyanide-containing waste water |
09/02/1993 | WO1993016958A1 Sludge treatment or destruction of the cellular structure of microorganisms by ultra-sounds |
09/02/1993 | WO1993016792A1 Process and reaction particles for carrying out reactions |
09/02/1993 | WO1993016781A1 Decanting apparatus |
09/02/1993 | DE4206147A1 Aeration of pond with venting diaphragm body - for blowing in large quantity of air or oxygen@ |
09/02/1993 | CA2157035A1 Apparatus for the purification of cyanide containing waste water |
09/01/1993 | EP0558421A1 Process and device for the depuration of animal excrements |
09/01/1993 | EP0558360A1 Process for bacterial treatment of circuits in paper industry contaminated with flora |
09/01/1993 | EP0557922A1 Liquid treatment method and apparatus |
09/01/1993 | EP0557630A1 Total water circulating system for shallow water areas |
09/01/1993 | CN1075698A Bio-active coal filtering material and its application |
09/01/1993 | CN1075665A Method to implement reaction and reaction particles |
09/01/1993 | CN1021964C Denitrifying method of high nitrogen-containing sewage and its equipment |
08/31/1993 | US5240611 Organic waste recycling system and method |
08/31/1993 | US5240600 Water and wastewater treatment system |
08/31/1993 | US5240599 Apparatus for treatment of waste water sludge |
08/31/1993 | US5240598 Microbubble generator for the transfer of oxygen to microbial inocula and microbubble generator immobilized cell reactor |
08/31/1993 | US5240597 Waste water treatment equipment |
08/29/1993 | CA2086859A1 Sewage treatment equipment with activated sludge process bed |
08/26/1993 | DE4205739A1 Verfahren zur zerstoerung zellulaerer strukturen von suspensionen von mikroorganismen durch ultraschall, insbesondere von schlaemmen aus biologischen klaeranlagen Method for the destruction of cellular structures of suspensions of micro-organisms by ultrasound, especially sludges from biological treatment plants |
08/26/1993 | DE4205686A1 Gas exchange appts. - has eddy unit for media flow to give fluid where gas can be exchanged |
08/26/1993 | DE4205572A1 Verfahren und reaktionsteilchen zur durchfuehrung von reaktionen Procedures and reaction particles for carrying out reactions |
08/26/1993 | DE4136445A1 Verfahren zur regulierung und/oder zum abbau von unerwuenschten viskositaets und csb-werten in lackkoagulationswaessern Process for the regulation and / or eliminating unwanted viscosity and csb-priced in lackkoagulationswaessern |
08/25/1993 | EP0557266A1 Device for introducing gas in liquids |
08/25/1993 | EP0556362A1 Method and device for the filtration of a liquid containing suspension particles. |
08/25/1993 | EP0556315A1 Means and method for enhancing plant growth under field conditions |
08/25/1993 | CN2140901Y Series combined device for treatment of waste water |
08/24/1993 | US5238572 Enzyme treatment for industrial slime control |
08/24/1993 | US5238560 Washable filter |
08/22/1993 | CA2089935A1 Process and system for increasing the gas uptake by a liquid being aerated |
08/19/1993 | WO1993016006A1 Sewage treatment apparatus |