| Patents for C02F 3 - Biological treatment of water, waste water, or sewage (46,453) |
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| 09/12/1978 | CA1038508A1 Sewage treatment devices, particularly for marine applications |
| 09/12/1978 | CA1038507A1 Waste treatment purification system |
| 09/12/1978 | CA1038271A1 Biological testing device |
| 09/05/1978 | US4112026 Bubble generating apparatus |
| 09/05/1978 | US4112025 Method of and apparatus for jet aeration |
| 09/05/1978 | US4111808 Apparatus for sludge digestion |
| 09/05/1978 | US4111768 Method of separating solids from a fluid system |
| 09/05/1978 | CA1038090A1 Reactor for biological water treatment |
| 08/29/1978 | US4110475 Cellulose fermentation process |
| 08/22/1978 | US4108763 Continuous treatment of liquid effluent and sewage |
| 08/22/1978 | CA1037016A1 Oxygen-consuming composition |
| 08/22/1978 | CA1036952A1 Process for the treatment and disposal of septic tank effluents |
| 08/15/1978 | US4107240 Method and device for lake restoration by oxygen-enriching of the water |
| 08/15/1978 | CA1036722A1 Process and apparatus for biological purification of effluent |
| 08/15/1978 | CA1036720A1 Process and apparatus for purifying waste waters |
| 08/15/1978 | CA1036575A1 Nitrohumic acid-containing adsorbents and process for producing same |
| 08/08/1978 | US4105724 Cellular |
| 08/08/1978 | US4105721 Venturi fitting for the aeration of water |
| 08/08/1978 | US4105546 Method of treating waste water with activated sludge |
| 08/01/1978 | US4104167 Biodegradation |
| 08/01/1978 | US4103827 Method of and apparatus for generating mixed and atomized fluids |
| 07/18/1978 | US4101679 Cellulose fermentation process |
| 07/18/1978 | US4101608 Preventing disturbance of thermocline |
| 07/18/1978 | US4101286 Bubble forming device having no moving parts |
| 07/11/1978 | US4100073 Waste-water treatment system |
| 07/11/1978 | US4100071 Apparatus for the treatment of liquids |
| 07/11/1978 | US4100070 Apparatus for use in water purification particularly sewage treatments |
| 07/11/1978 | US4100063 Method and apparatus for the biological cleansing of waste water |
| 07/11/1978 | US4100062 Method of treatment of an oxidizable material by a biochemical process |
| 07/11/1978 | US4100023 Digester and process for converting organic matter to methane and fertilizer |
| 07/11/1978 | US4099871 Method and apparatus for determination of activated sludge volume index |
| 07/04/1978 | US4098851 Device for mixing gases and liquids |
| 07/04/1978 | US4098690 To reduce ammonia content, by ion exchange |
| 07/04/1978 | US4098689 Method of treating waste water with activated sludge |
| 06/27/1978 | US4097380 Septic tank-leaching pool arrangement |
| 06/27/1978 | US4097026 Apparatus for mixing a basic liquid substance with other media |
| 06/20/1978 | US4096215 Device for applying gas to a liquid |
| 06/20/1978 | US4096065 Biodegradation |
| 06/13/1978 | US4094774 Method and apparatus for oxygenating aerobically decomposable liquors |
| 06/13/1978 | US4094773 Process for sewage treatment with countercurrent heat transfer means |
| 06/06/1978 | US4093549 Aerator sewage tank |
| 06/06/1978 | US4093546 Biological filter |
| 06/06/1978 | US4093539 Activated sludge treatment of wastewater |
| 05/30/1978 | US4092338 Sludge distribution network |
| 05/30/1978 | US4092249 Septic tank |
| 05/30/1978 | US4092245 Liquid purification method |
| 05/23/1978 | US4090965 Installation for the mechanical-biological purification of waste water |
| 05/23/1978 | US4090940 Apparatus for producing methane gas by processing waste materials |
| 05/16/1978 | US4089761 Method for treating sewage |
| 05/16/1978 | US4089660 Process for contacting a gas with a liquid |
| 05/09/1978 | US4088571 Method and apparatus for biological purification |
| 05/02/1978 | US4087496 Stirring apparatus for treating waste liquids |
| 05/02/1978 | US4087361 Aeration, waste water treatment |
| 05/02/1978 | US4087356 Method for depolluting fresh and sea water from petroleum products |
| 05/02/1978 | US4087262 Pressurized gas transfer system with dilution control |
| 04/25/1978 | US4086306 Centrifugal pump |
| 04/25/1978 | US4086167 Biofilter |
| 04/25/1978 | US4086161 Ecological system and method |
| 04/25/1978 | US4086160 Treatment of solids-liquid-gas mixtures |
| 04/18/1978 | US4085170 Bubbling, electrical spark discharge |
| 04/18/1978 | US4085041 Biological oxidation and flotation apparatus and method |
| 04/11/1978 | US4083785 Sludge treatment by oxidation, multicompartments |
| 04/11/1978 | US4083746 Apparatus for making biological discs |
| 04/11/1978 | US4083661 Pneumatic sewage ejector |
| 04/04/1978 | US4082672 Mobile sludge trailer and method of filling and emptying same |
| 04/04/1978 | US4082662 Liquid waste treatment apparatus |
| 03/28/1978 | US4081378 Liquid aeration to reduce biological oxygen demand |
| 03/28/1978 | US4081368 Aeration of waste water |
| 03/28/1978 | US4081367 Culturing yeasts |
| 03/28/1978 | US4081365 Methods for use in water purification particularly sewage treatments |
| 03/21/1978 | US4080292 Tank for agitation and aeration of sewages |
| 03/21/1978 | US4080288 Sewage treatment |
| 03/21/1978 | US4080287 Activated carbon treatment of oxygenated wastewater |
| 03/14/1978 | US4079008 Mixing apparatus for biochemical treatment of fluids with oxygen |
| 03/07/1978 | US4078026 Device for dispersing gas into a liquid |
| 02/28/1978 | US4076619 Hydrophilic acrylic polymers as marine filters, algae growth catalysts, and breeding stimulus for fish and invertebrates |
| 02/28/1978 | US4076616 Process for the biological purification of sewage |
| 02/28/1978 | US4076615 Process and system for treating waste water |
| 02/21/1978 | US4074953 Surface aerator |
| 02/14/1978 | US4073722 Process for the purification of waste water |
| 02/14/1978 | US4073696 Apparatus for combined cooling and aeration of biochemical-action vessels |
| 02/07/1978 | US4072798 Bioelectric neutralization of acid waters |
| 02/07/1978 | US4072612 Aerator for bodies of water |
| 01/31/1978 | US4071443 Regulating oxygen input in treatment of effluent |
| 01/31/1978 | US4070714 Sewerless recirculating toilet and human waste storage system |
| 01/24/1978 | US4070423 Apparatus for diffusion in bodies of liquid |
| 01/24/1978 | US4070292 Apparatus for treating sewage |
| 01/24/1978 | US4070279 Eductor for dissolving gases in liquids |
| 01/17/1978 | US4069156 Biooxidation |
| 01/17/1978 | US4069149 Continuous fermentation process and apparatus |
| 01/17/1978 | US4069148 Biologically active solids, activated carbon, oxidation |
| 01/17/1978 | US4069147 Waste water treatment with oxygen |
| 01/10/1978 | US4067936 Fluid-fluid contact apparatus |
| 01/10/1978 | US4067801 Process and system for anaerobic treatment of biochemical waste |
| 01/03/1978 | US4066722 Apparatus for sparging gas into liquid |
| 01/03/1978 | US4066550 Anaerobic bacterial digestion |
| 01/03/1978 | US4066538 Sewage treatment |
| 12/27/1977 | US4065527 Method and apparatus for interaction of gas and liquid |
| 12/20/1977 | US4064047 Method and apparatus for waste water treatment |
| 12/13/1977 | US4062911 Device for the purification of waste water |