| Patents for C02F 3 - Biological treatment of water, waste water, or sewage (46,453) |
|---|
| 07/03/1984 | US4457844 Head differential between levels in clarifier and in oxidation ditch |
| 07/03/1984 | CA1170378A1 Process and device for aerobic biotreatment |
| 06/27/1984 | EP0112095A1 Aqueous liquid treatment process and apparatus |
| 06/26/1984 | US4456532 Biological flocculation of mineral slimes |
| 06/21/1984 | WO1984002334A1 Method and means of purifying sewage |
| 06/20/1984 | EP0111379A1 A method of, and apparatus for, purifying waste water |
| 06/20/1984 | EP0111302A1 Biofiltration process |
| 06/19/1984 | US4455239 Clarification of fluids |
| 06/19/1984 | US4455232 Method and apparatus for induced-flow circulation and pressurized aeration in a barrier oxidation ditch |
| 06/13/1984 | EP0110715A1 Method of nitrification of ammonia-containing wastewaters |
| 06/13/1984 | EP0110240A1 Process and apparatus for the removal of heavy metals from waste water |
| 06/12/1984 | US4454077 Process and apparatus for mixing a gas and a liquid |
| 06/12/1984 | US4454038 Apparatus for biological treatment of waste water in downflow operation |
| 06/05/1984 | US4452894 Pseudomonas compositions |
| 06/05/1984 | US4452701 Biological treatment of sewage |
| 06/05/1984 | US4452700 Process for the performance and control of chemical resp. bio-chemical reactions |
| 06/05/1984 | US4452699 Method of improving the SVI of mixed liquor in aeration tank |
| 06/05/1984 | US4452548 Pond with filtered water |
| 05/29/1984 | US4451373 Ring channel aeration apparatus and method |
| 05/29/1984 | US4451372 Method and installation for purifying contaminating water |
| 05/29/1984 | US4451362 Filling for percolating filters for biological waste water purification |
| 05/29/1984 | CA1168386A1 Apparatus for admixing a gas to a liquid, in particular for admixing oxygen to polluted water |
| 05/22/1984 | US4450074 Control of anaerobic filter |
| 05/16/1984 | EP0108730A2 Apparatus and process for the treatment of liquid wastes |
| 05/15/1984 | US4448695 Multicellular grid packed with activated carbon |
| 05/15/1984 | US4448690 Subsurface waste disposal system |
| 05/15/1984 | US4448685 Aerating apparatus utilizing rotating impeller vane |
| 05/15/1984 | US4448681 Floatation arrangement |
| 05/08/1984 | US4447539 Pseudomonas for waste water treatment |
| 05/08/1984 | CA1167181A1 Process for treatment of waste water |
| 05/08/1984 | CA1167137A1 Control of anaerobic filter |
| 05/08/1984 | CA1167029A1 Rotating-arm depending articulated paddle agitators operating in a water treatment basin |
| 05/02/1984 | EP0107406A2 Hydraulic horizontal mixer |
| 05/02/1984 | EP0107182A1 Sludge stabilization |
| 05/02/1984 | EP0030955B1 A device for flushing and aerating a surface coated with microorganisms in a plant for biological purification of waste water |
| 05/01/1984 | US4446031 Sewage treatment composition its manufacture and use |
| 05/01/1984 | US4446018 Waste treatment system having integral intrachannel clarifier |
| 04/26/1984 | WO1984001582A1 Fermenter |
| 04/25/1984 | EP0106043A2 Process and aeration tank system for biologically treating sewage |
| 04/24/1984 | US4444888 Microorganism for decolorizing pulp and paper mill wastewater |
| 04/24/1984 | US4444664 Process for the biological treatment of a liquid effluent on an adsorbing material bed |
| 04/24/1984 | US4444658 Rotating biological contactor apparatus |
| 04/24/1984 | US4444510 Stirrer, having substantially triangular, radial blades, rising toward the circumference |
| 04/18/1984 | EP0105788A1 Process and apparatus for the anaerobic treatment of waste water in a filter with granular filter media |
| 04/17/1984 | US4443338 Conversion of plug flow and complete mix aeration basins to barrier oxidation ditches |
| 04/17/1984 | US4443337 Biological treatment of waste water |
| 04/17/1984 | US4443335 For swimming pool or large water tank |
| 04/17/1984 | US4442889 Apparatus for combined cooling and aeration of biochemical-action vessels |
| 04/12/1984 | WO1984001362A1 Terraced-casketed sewage treating system |
| 04/10/1984 | US4442045 Apparatus for admixing a gas to a liquid, in particular for admixing oxygen to polluted water |
| 04/10/1984 | US4442007 Hydrogen peroxide, aerobic biodegradation |
| 04/10/1984 | US4442006 Partial liquefaction followed by liquefaction, gasification and fermentation to produce high purity methane |
| 04/10/1984 | US4442005 Efficient sewage treatment |
| 04/10/1984 | CA1165218A1 Machine for heat sealing polymeric sheets into a spiral drum |
| 04/04/1984 | EP0104648A2 Waste water treatment |
| 04/04/1984 | EP0104525A2 Apparatus and process for the biological purification of waste water |
| 04/03/1984 | US4440648 Process and an apparatus for enriching liquids with oxygen |
| 04/03/1984 | US4440645 Sewage treatment |
| 04/03/1984 | US4440644 Method for the biological removal of free and complex cyanides and thiocyanates from water |
| 03/27/1984 | US4439323 Method of discharging septic tank filtered effluent |
| 03/27/1984 | US4439317 Aerobic, on-location |
| 03/27/1984 | US4439316 Water purifier |
| 03/27/1984 | US4439315 Methane generator |
| 03/27/1984 | CA1164586A1 Device for injecting a gas into a liquid |
| 03/27/1984 | CA1164585A1 Floating water-purification apparatus |
| 03/20/1984 | US4437992 Process for controlling an aeration tank in an activated sludge sewage treatment |
| 03/20/1984 | US4437987 Anaerobic digester gas collection and storage systems |
| 03/14/1984 | EP0102610A1 Apparatus and method for the treatment of organic wastes |
| 03/14/1984 | EP0102584A2 Process for water denitrification |
| 03/14/1984 | EP0102435A1 Process and apparatus for maintaning a fine gas dispersion in liquids |
| 03/13/1984 | US4436675 Furifiers arranged according to different depths of region |
| 03/13/1984 | US4436632 Clarifier skimmer |
| 03/13/1984 | US4436624 CRT Method of converting and separating substances contained, dissolved or dissolvable in a carrier liquid |
| 03/07/1984 | EP0101830A1 Process for the treatment of spent drilling-mud |
| 03/06/1984 | US4435292 Flushing fluid circulation system |
| 03/06/1984 | US4435286 Liquid filter device |
| 03/06/1984 | US4435188 Anaerobic treatment of organic wastes; methane production |
| 02/28/1984 | US4434061 Solids-liquid separation |
| 02/22/1984 | EP0101145A2 Air diffuser for waste water treatment |
| 02/22/1984 | EP0100953A1 Fixed bed reactor for the treatment, especially the anaerobic treatment of sewage sludge or liquids heavily polluted with organic compounds |
| 02/21/1984 | US4432887 Culture broth resulting from fermentation of norcardia, arthrobacterium, mycobacterium, and corynebacterium |
| 02/21/1984 | US4432869 Method of treating agricultural wastes |
| 02/21/1984 | CA1162498A1 Process for preparing an inoculum containing dehydrated microorganisms and enzymes useful for the maintenance of septic tanks and the like, and inoculum thus prepared |
| 02/21/1984 | CA1162491A1 Liquid treatment apparatus |
| 02/16/1984 | WO1984000535A1 Installation for the treatment of waste water by means of biomass according to an aerobic process |
| 02/15/1984 | EP0100568A2 Process for the treatment of waste water |
| 02/14/1984 | US4431543 Using an anaerobic-aerobic activated sludge; sewage treatment; pollution control |
| 02/14/1984 | US4431537 Rotating biological contactors for the treatment of waste water |
| 02/08/1984 | EP0100024A1 Process for the biological cleaning of exhaust air |
| 02/08/1984 | EP0100007A2 Process and apparatus for the biological purification of waste water |
| 02/08/1984 | EP0100004A2 Process for the biological decomposition of organic impurities in highly concentrated waste waters by means of suspended bacteria |
| 02/07/1984 | US4430225 Aeration tank for activated-sludge process sewage treatment |
| 02/07/1984 | US4430224 Activated sludge, aeration, multistage, vessels |
| 02/07/1984 | US4430215 Arrangement for biological cleaning of water |
| 02/07/1984 | US4429643 Apparatus and method for treating sewage sludge |
| 02/01/1984 | EP0099421A1 Biological wastewater treating system |
| 01/31/1984 | US4428893 Pipe support |
| 01/31/1984 | CA1161578A1 Apparatus for treating liquids |
| 01/25/1984 | EP0099078A1 Process and apparatus for mixing a gas and a liquid |
| 01/25/1984 | EP0099020A2 Cultures of microorganisms degrading polysubstituted aromatic hydrocarbons, method for their production and their use in biological purification plants |