| Patents for C02F 3 - Biological treatment of water, waste water, or sewage (46,453) |
|---|
| 02/08/1977 | US4007240 Supporting arrangements for porous diffusers |
| 02/08/1977 | US4007120 Oxidation and ozonation chamber |
| 02/01/1977 | US4006085 Liquid treating apparatus |
| 02/01/1977 | US4005546 Method of waste treatment and algae recovery |
| 01/25/1977 | US4005043 Preparation of composition for converting hydrocarbons and fats into biodegradable aqueous emulsions |
| 01/25/1977 | US4005017 Contacting apparatus |
| 01/25/1977 | US4005015 Aerating apparatus |
| 01/25/1977 | US4005014 Water treatment system with prolonged aeration |
| 01/25/1977 | US4005010 Method of packing media in a tower or bed |
| 01/18/1977 | US4003796 Fermentation |
| 01/11/1977 | US4002705 Fluid-fluid contact apparatus |
| 01/11/1977 | US4002566 Bacteria culture bed |
| 01/11/1977 | US4002561 Method and apparatus for aerobic sewage treatment |
| 01/04/1977 | US4001108 Method for natural biochemical decomposition of latrine |
| 01/04/1977 | US4000857 Flow control aerator |
| 12/28/1976 | US4000227 Dissolving gas in liquid |
| 12/21/1976 | US3998714 Two stage oxidation for disinfection of ammonia-materials |
| 12/21/1976 | US3998389 Apparatus for gas treatment of liquids |
| 12/14/1976 | USRE29075 Liquid aerator |
| 12/14/1976 | US3997634 Diffuser assembly |
| 12/14/1976 | US3997443 Apparatus for biological treatment of waste water |
| 12/14/1976 | US3997437 Aerobic type sewage digestion system |
| 12/07/1976 | US3996148 From a carboxylic diacid and a hydrocarbon or hydroxy amine |
| 12/07/1976 | US3996139 Liquid waste treatment apparatus |
| 11/30/1976 | US3994803 Apparatus and method for denitrification of waste water |
| 11/30/1976 | US3994802 Removal of BOD and nitrogenous pollutants from wastewaters |
| 11/23/1976 | US3993559 Process for eliminating reactive chlorinated organic compounds from aqueous solutions |
| 11/16/1976 | US3992491 Rotating gas diffuser |
| 11/16/1976 | US3992299 Sewage treatment devices particularly for marine applications |
| 11/09/1976 | US3990974 Waste treatment and solids separating system |
| 11/09/1976 | US3990967 Positive progressive biochemical digestion of organic waste |
| 11/02/1976 | US3989627 Removable gas diffuser and apparatus therefor |
| 10/26/1976 | US3988396 Sewage treatment |
| 10/19/1976 | US3986963 Septic tank tee |
| 10/19/1976 | US3986957 Basins, oscillation |
| 10/19/1976 | US3986932 Control of aerobic fermentation processes |
| 10/12/1976 | US3985653 Rotary apparatus adapted to bring at least two media of different weight into alternate contact with the apparatus surfaces |
| 10/12/1976 | US3985649 Ferromagnetic separation process and material |
| 10/05/1976 | US3984323 Apparatus for purifying polluted water |
| 10/05/1976 | US3984322 Sewage treatment apparatus |
| 10/05/1976 | US3984321 Sewage treatment plant |
| 10/05/1976 | US3984312 Process for insolubilizing potentially water pollutable wastes from sodium or ammonium type sulfur dioxide air pollution control systems |
| 09/28/1976 | US3983031 Methods and apparatus for controlling the supply of a feed gas to dissolution devices |
| 09/21/1976 | US3981803 Method and apparatus for anaerobic fermentation |
| 09/21/1976 | US3981800 High quality methane gas through modified anaerobic digestion |
| 09/14/1976 | US3980740 Devices for aerating liquids |
| 09/14/1976 | US3980561 Air supply |
| 09/14/1976 | US3980557 Phosphorus removal from wastewater |
| 09/14/1976 | US3980556 Adsorption biooxidation treatment of waste waters to remove contaminants therefrom |
| 09/07/1976 | US3979294 Clarification plant |
| 09/07/1976 | US3979293 Apparatus for the purification of effluent |
| 09/07/1976 | US3979283 Microbial degradation of DDT |
| 08/31/1976 | US3978176 Sparger |
| 08/31/1976 | US3977978 Separation chamber, holding tank, drainage system |
| 08/31/1976 | US3977966 Purification of non-biodegradable industrial wastewaters |
| 08/31/1976 | US3977965 Anaerobic, anerobic processes |
| 08/31/1976 | US3977606 Diffuser device |
| 08/24/1976 | US3976575 Liquid aeration device |
| 08/24/1976 | US3976568 Method of wastewater treatment |
| 08/17/1976 | US3975469 Device for revolving liquids and supplying gas thereto |
| 08/17/1976 | US3975276 Modular aerator and separator assembly for sewage treatment facility |
| 08/17/1976 | US3975247 Treating sewage and recovering usable water and solids |
| 08/03/1976 | US3972965 Sewage treatment |
| 07/27/1976 | US3971338 Aquarium apparatus |
| 07/20/1976 | US3970731 Bubble-generating aerator |
| 07/13/1976 | US3969446 Apparatus and method for aerating liquids |
| 07/13/1976 | US3969249 Solids remover for high rate algae ponds |
| 07/06/1976 | US3968086 Double funnel device for oxygenating sewage |
| 07/06/1976 | US3968036 Activated sludge, vanadium-iron-copper-carbon-nickel catalyst |
| 07/06/1976 | US3968035 Super-oxygenation method |
| 07/06/1976 | US3968034 Process and apparatus for treating wastes by a combined activated sludge and biological filter bed |
| 06/29/1976 | US3966854 Air trap |
| 06/29/1976 | US3966608 Liquid treatment apparatus |
| 06/29/1976 | US3966604 Apparatus for aerobic decomposition of sewage |
| 06/29/1976 | US3966599 Method and apparatus |
| 06/22/1976 | US3965009 Apparatus for biological purification of an effluent |
| 06/22/1976 | US3964998 Improvements in and relating to waste water treatment |
| 06/15/1976 | US3963609 Aeration |
| 06/15/1976 | US3963576 Method for rendering bacteria dormant and the product produced thereby |
| 06/08/1976 | US3962087 Immersion filter |
| 06/08/1976 | US3962073 Process for treating a waste liquid of hydrosulfite |
| 06/08/1976 | US3962035 Hydrocarbon conversion process |
| 06/01/1976 | US3961078 Soluble waste conversion process and pasteurized proteinaceous products |
| 06/01/1976 | US3960991 Water treatment |
| 06/01/1976 | US3960718 Method and apparatus for treating liquid sewage and waste |
| 06/01/1976 | US3960717 Process for treating waste water |
| 06/01/1976 | US3960175 Installation for charging liquids, particularly fermentation liquids, with gas |
| 06/01/1976 | US3959923 Equipment for growing algae |
| 05/25/1976 | US3959144 Apparatus for biological and chemical purification of water by agglomeration |
| 05/25/1976 | US3959142 Manhole aerator |
| 05/25/1976 | US3959127 Biodegradation of oil on water surfaces |
| 05/25/1976 | US3959125 Treatment and disposal of sewage sludge |
| 05/25/1976 | US3959124 Method and apparatus for the activated sludge treatment of wastewater |
| 05/25/1976 | US3958364 Production of algal bio-polymers |
| 05/18/1976 | US3957931 Fluid-fluid contact method and apparatus |
| 05/18/1976 | US3957642 Sewage treatment |
| 05/18/1976 | US3957634 Aquarium system using biological and mechanical filtration |
| 05/18/1976 | US3957633 Sewage treatment method and apparatus |
| 05/18/1976 | US3957632 Waste-water purification |
| 05/18/1976 | US3957607 Process for the preparation of lipide soluble complexes of cations, application of the process and use of the complexes |