| Patents for C02F 3 - Biological treatment of water, waste water, or sewage (46,453) |
|---|
| 02/03/1993 | CA2070250A1 Process for the elimination of carbon, nitrogen, and phosphorous nutrients |
| 02/02/1993 | US5183595 Device for gassing liquids |
| 01/28/1993 | DE4124779A1 Surface water treatment - converts sediment surface to mineral layer, to separate mud from water |
| 01/27/1993 | EP0524794A1 A method and apparatus for treating a fluid |
| 01/27/1993 | EP0524376A1 Apparatus for dissolution of gas in liquid |
| 01/27/1993 | CN2126629Y Double-fastened composite filling |
| 01/27/1993 | CN1068276A Apparatus for dissolution of gas in liquid |
| 01/26/1993 | US5182021 Concurrent biological nitrification and denitrification |
| 01/21/1993 | WO1993001138A1 A process for de-pollution by means of biodegradation and means for performing the same |
| 01/21/1993 | WO1993001137A1 Device for the purification of waste water |
| 01/21/1993 | WO1993000977A1 Method and apparatus for separating gaseous bubbles and sand fro m a liquid flow |
| 01/21/1993 | DE4123814A1 Water enriching assembly - has primary flow stream over sieve with upwards air flow and dwell zone to be mixed with lower sec. flow to be taken from container |
| 01/21/1993 | DE4104624C1 Degradation of harmful organic material - using lignin-degrading organisms, without the need for specially prepd. substrate |
| 01/21/1993 | CA2112991A1 Method and apparatus for separating gaseous bubbles and sand from a liquid flow |
| 01/21/1993 | CA2112481A1 Device for the purification of waste water |
| 01/20/1993 | EP0523883A1 A process for the treatment of saline effluents |
| 01/20/1993 | EP0523498A1 Sewage treatment apparatus |
| 01/20/1993 | CN1068088A Treatment of organic waste water by means of synchronous activated mud method |
| 01/19/1993 | US5180501 Floating aquatic plant water treatment system |
| 01/19/1993 | US5180495 Water purification process |
| 01/19/1993 | US5180494 Method of controlling waste water treatment by anaerobic fermentation |
| 01/14/1993 | DE4121412A1 Increasing purificn. capability of small clarification plant - involves providing water return lines and trickle chamber |
| 01/13/1993 | EP0522966A1 Process and plant for waste water purification comprising dephosphorisation and anaerobic/aerobic treatment |
| 01/13/1993 | EP0522946A1 Process and installation for water denitrification using metallic iron |
| 01/13/1993 | EP0522805A1 Vehicle mounted apparatus and method for determining suitability of effluent water for treatment for reuse |
| 01/12/1993 | US5178762 Water treatment for removal of organic or heavy metals |
| 01/12/1993 | US5178758 Biochemical water filter |
| 01/12/1993 | US5178491 Vapor-phase nutrient delivery system for in situ bioremediation of soil |
| 01/12/1993 | US5178093 Aquaculture system |
| 01/11/1993 | CA2056760A1 Apparatus for dissolution of gas in liquid |
| 01/09/1993 | CA2073216A1 Process for denitrifying water using metallic iron and installation for implementing same |
| 01/07/1993 | WO1993000303A1 Baffle system for anaerobic sewage treatment pond |
| 01/07/1993 | WO1993000302A1 Method for fermentation of especially highly viscous substrates and means for blending air into the substrate |
| 01/07/1993 | WO1993000178A1 Use of metallic peroxides in bioremediation |
| 01/07/1993 | EP0521308A1 Process for joint treatment of NH3 and/or H2S containing process waste waters as well as sodium sulfide containing caustic soda |
| 01/07/1993 | EP0521241A1 Apparatus for enriching waters with oxygen |
| 01/07/1993 | DE4212955A1 Gas or liq. filter body for biological water cleaning - has spaced wall sections forming groups of passageways |
| 01/07/1993 | DE4121181A1 Decontamination of polluted soil, etc. - by washing in fluidised bed, rinsing with water and recycling |
| 01/05/1993 | US5176831 Method for herding and/or recovering spilled oil |
| 12/30/1992 | EP0520239A1 Detoxication of vegetation liquors |
| 12/30/1992 | EP0520057A1 Waste water biological treatment device |
| 12/29/1992 | US5174898 Method of treating an organic sludge, especially paint sludge |
| 12/29/1992 | US5174897 Constructed wetlands to control nonpoint source pollution |
| 12/29/1992 | US5174652 Air intake supressor |
| 12/29/1992 | CA1312032C Rotating coiled tube biological contactor |
| 12/24/1992 | DE4120519A1 Reducing loading of waste water esp. from cellulose@ industry - by physico-chemical flocculation before biological purificn. |
| 12/23/1992 | WO1992022506A1 Process and device for purifying sewage |
| 12/23/1992 | WO1992022505A1 Fixed-bed reactor for the biological treatment of sewage |
| 12/23/1992 | EP0519897A2 Vapor-phase nutrient delivery system for in situ bioremediation of soil |
| 12/23/1992 | EP0519258A1 Method and device for the continuous separation, purification and return of granular, floatable base material from reactors for biological water treatment |
| 12/23/1992 | EP0414858B1 Fluid treatment |
| 12/23/1992 | EP0383765B1 Sewage treatment plant |
| 12/23/1992 | CN2125583U Composite waste water treating device |
| 12/23/1992 | CN2125582U Composite packings with support tube |
| 12/23/1992 | CN1067227A Gas dissolving and releasing liquid treatment system |
| 12/22/1992 | US5173187 Method for control and monitoring of activated sludge in a biological clarification system |
| 12/17/1992 | DE4119835A1 Water cleaning basin - has oxygen@ delivery system at basin base to support plants which clean the water |
| 12/17/1992 | DE4119718A1 Portable sewage treatment assembly - has pre-flotation section and two=stage treatment section with aerobic and anaerobic biological actions |
| 12/17/1992 | DE4119144A1 Biological, chemical and physical processing of contaminated water - involves pre-treatment with oxidising agents including hydrogen peroxide and catalysts |
| 12/17/1992 | DE4117513A1 Fine grain bed decontamination - by using suspension with nutrient salts for microorganisms in a bio-reactor to degrade toxic organic matter |
| 12/16/1992 | CN2124911U Tow punching fixed combined fillings |
| 12/15/1992 | US5171687 Apparatus for culturing and delivery of microbe for waste treatment in a flow system |
| 12/10/1992 | WO1992021620A1 Rotating biological aquarium filter system |
| 12/10/1992 | DE4118927A1 Festbettreaktor zur biologischen behandlung von abwaessern Fixed bed reactor for biological treatment of wastewater |
| 12/09/1992 | EP0517649A1 Fixed bed reactor for biological waste water treatment |
| 12/09/1992 | EP0517236A1 Plant for treating wastewater polluted by surfactants |
| 12/09/1992 | EP0516744A1 Method and apparatus for recirculation of liquids. |
| 12/09/1992 | CN1066832A Method for treating waste water containing phenol by fixed large edible fungus hypha |
| 12/08/1992 | US5169532 Method for biological removal of cyanides, thiocyanate and toxic heavy metals from highly alkaline environments |
| 12/08/1992 | US5169293 Ejector with high vacuum force in a vacuum chamber |
| 12/08/1992 | CA1311315C Air driven water circulation mill |
| 12/02/1992 | EP0515627A1 Process and device for biologically purifying substances |
| 12/02/1992 | EP0515570A1 Device for aerobic purification of waste water. |
| 12/02/1992 | CN1019292B Treatment of waste water from distillers' grains |
| 12/01/1992 | WO1992021435A1 Bubbleless gas transfer device and process |
| 12/01/1992 | US5168058 Packing material for anchorage-dependent cells |
| 12/01/1992 | US5167833 Wastewater filtration |
| 12/01/1992 | US5167821 Method for thickening and dewatering slurry sludge |
| 12/01/1992 | US5167806 Gas dissolving and releasing liquid treatment system |
| 12/01/1992 | US5167798 Apparatus and process for the separation of hydrophobic and hydrophilic particles using microbubble column flotation together with a process and apparatus for generation of microbubbles |
| 11/30/1992 | WO1992021619A1 Secondary sewage treatment system |
| 11/26/1992 | WO1992020636A1 Packing for biofilters and method of making three-dimensional porous blocks therefor |
| 11/26/1992 | WO1992020624A1 Methods and apparatus for producing potable water |
| 11/26/1992 | WO1992018442A3 Portable system for treating human waste |
| 11/26/1992 | DE4117056A1 Rotation reactor disc - has a structured material filled with a porous material fixed to a surface for attachment of microorganisms |
| 11/26/1992 | DE4112802C1 Biological clarification device for waste water - has three-layer structure for aerobic, degassing and aeration treatment |
| 11/25/1992 | EP0514543A1 Sewage purification apparatus |
| 11/25/1992 | EP0514453A1 Treatment of wastewater. |
| 11/25/1992 | EP0407404B1 A method for the break-down and recycling of solid urban waste by anaerobic fermentation |
| 11/25/1992 | CN2122862U Sewage anaerobic reactor |
| 11/24/1992 | US5166072 Apparatus for the cultivation of immobilized micro-organisms |
| 11/24/1992 | US5165477 Enzymatic decomposition of drilling mud |
| 11/19/1992 | EP0513352A1 Method of cleaning soil water |
| 11/19/1992 | DE4116082A1 Car wash waste water treatment - is cleaned mechanically and biologically for recirculation and normal disposal of collected solids |
| 11/19/1992 | DE4115965A1 Transportable water purifier - has greenhouse container with tanks for cleaning through plant biology with systems for all year round working |
| 11/17/1992 | USRE34127 Method for preventing the bulking of activated sludge |
| 11/17/1992 | US5164089 Aquarium filter assembly |
| 11/12/1992 | WO1992019738A1 Microbial degradation of trichloroethylene, dichloroethylenes and aromatic pollutants |
| 11/12/1992 | WO1992019719A1 Glyphosate degrading bacteria |
| 11/12/1992 | WO1992019551A1 Semi-continuous bacterial leaching process |