| Patents for C02F 3 - Biological treatment of water, waste water, or sewage (46,453) |
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| 02/13/1979 | US4139471 Sewage treatment unit |
| 02/13/1979 | US4139457 Method of and apparatus for purifying waste water |
| 02/13/1979 | US4139456 Bacteria, iron |
| 02/13/1979 | CA1048663A1 Special aerator |
| 02/06/1979 | US4138335 Sewage aerating structure |
| 02/06/1979 | US4138333 Waste material digesters |
| 02/06/1979 | US4138330 Dissolving gas |
| 02/06/1979 | US4138328 Use of a high capacity aeration compartment in a multiple aeration system |
| 02/06/1979 | CA1048173A1 Method and apparatus for bubble shearing and method of fabricating the apparatus |
| 02/06/1979 | CA1048172A1 Device for revolving liquids and supplying gas thereto |
| 02/06/1979 | CA1048015A1 Rotating gas diffuser |
| 01/30/1979 | US4137285 Gas-liquid contact apparatus |
| 01/30/1979 | US4137200 Polyurethanes |
| 01/30/1979 | US4137172 Sewage treatment apparatus with disks |
| 01/30/1979 | US4137171 Process for treating waste water and an apparatus therefor |
| 01/30/1979 | US4137162 Method for treating waste waters |
| 01/30/1979 | US4137158 Process for tertiary treatment of waste waters from anaerobic digestion treatment process |
| 01/24/1979 | EP0000461A1 Process and active packing material for the biological denitrification of waste water |
| 01/23/1979 | US4136024 Aerosol dispersion of microorganisms to eliminate oil slicks |
| 01/23/1979 | US4136023 Oxygenation |
| 01/23/1979 | US4135976 Treatment of photographic processing effluents using photosynthetic sulfur bacteria |
| 01/16/1979 | US4134830 Method of purifying waste water |
| 01/16/1979 | CA1046664A1 Subsurface aerator and mixer |
| 01/16/1979 | CA1046663A1 Swing pipe assembly for removable gas diffuser |
| 01/16/1979 | CA1046662A1 Biological waste treatment system |
| 01/16/1979 | CA1046661A1 Removal of nitrogen from waste waters |
| 01/10/1979 | EP0000293A1 Apparatus and method for anaerobic digestion of biodegradable waste material |
| 01/09/1979 | US4133850 Apparatus in a tank for aerating liquids which tend to froth |
| 01/09/1979 | US4133752 Method for decomposition of phthalic acid esters by use of microorganisms |
| 01/09/1979 | US4133709 Method of making flexible multi-columnar fluid treatment cellular apparatus |
| 01/09/1979 | CA1046000A1 Microorganisms in combination with surface active agents to synergistically disperse oil slicks |
| 01/02/1979 | US4132638 Aerobic, thermophilic degradation with enzyme addition |
| 01/02/1979 | US4132637 Ozone disinfection in waste water treatment with recycling of ozonation off gas |
| 01/02/1979 | US4132636 Removal of ammonia, treatment with microorganisms, sedimentation by addition of an iron salt |
| 01/02/1979 | US4132625 Sewage osmosis system |
| 01/02/1979 | US4132362 Spray head |
| 01/02/1979 | CA1045543A1 Method and apparatus for dissolving gas in liquid |
| 12/26/1978 | CA1045257A1 Apparatus and method for diffusion in bodies of water |
| 12/20/1978 | EP0000006A1 Process for nitrification of waste water |
| 12/19/1978 | US4130612 Aerator for biological waste-water purification |
| 12/19/1978 | US4130482 Biological, multistage |
| 12/19/1978 | US4130481 Maintaining optimum settling rate of activated sludge |
| 12/19/1978 | US4130365 Mass transfer in liquid media |
| 12/19/1978 | CA1044696A1 Device for injecting gas in a liquid_ |
| 12/19/1978 | CA1044603A1 Vane type orbital engine |
| 12/12/1978 | US4129502 Liquid treatment process |
| 12/05/1978 | US4128477 Method for the treatment of sea discharged sewage |
| 12/05/1978 | CA1043770A1 Retro deflecting liquid circulator and inseminator |
| 11/28/1978 | US4127447 Biomass growth restriction in a packed bed reactor |
| 11/28/1978 | CA1043482A2 Chemical treatment of waste water to remove phosphorus contaminants |
| 11/28/1978 | CA1043480A2 Ozonation in waste water treatment |
| 11/28/1978 | CA1043479A2 Waste water treatment tank |
| 11/28/1978 | CA1043476A1 Method and apparatus for aeration of biodegradable waste material |
| 11/21/1978 | US4126545 Apparatus and method for treating waste-containing liquors |
| 11/21/1978 | US4126544 Removing organic nitrogen compounds, nitrates, nitrites, and ammonium compounds using aerobic and anaerobic bacteria |
| 11/14/1978 | CA1042571A1 Sewage aerating structure |
| 11/14/1978 | CA1042570A1 Warm sludge digestion with oxygen |
| 11/14/1978 | CA1042569A1 Method of and apparatus for the dissolution of gaseous oxygen into a liquid |
| 11/14/1978 | CA1042568A1 Sewage treatment |
| 11/14/1978 | CA1042225A1 Process for conditioning sewage sludge |
| 11/07/1978 | US4124660 Process and apparatus for mixing gases and liquids |
| 11/07/1978 | US4124508 Gas transfer system |
| 11/07/1978 | US4124501 Purifying oil shale retort water |
| 11/07/1978 | US4124481 Apparatus for treating sewage |
| 11/07/1978 | CA1041943A1 Method of and apparatus for waste water treatment |
| 10/31/1978 | US4123482 Mechanical aerator |
| 10/31/1978 | US4123359 Water purifying system and pump therefor |
| 10/31/1978 | US4123358 Septic system liquid level control apparatus |
| 10/31/1978 | US4123006 Spray pipe for use in a pipe line |
| 10/31/1978 | CA1041681A1 Method for the purification of waste water |
| 10/24/1978 | US4122013 Sewage treatment system |
| 10/24/1978 | US4122011 Packing |
| 10/24/1978 | US4121539 Animal enclosure system with waste treatment means |
| 10/24/1978 | CA1041231A1 Liquid wastes redistribution apparatus and method |
| 10/17/1978 | CA1040759A1 Methods and apparatus for treating wastewater |
| 10/17/1978 | CA1040758A1 Hydrogen sulfide removal from waste fluid |
| 10/17/1978 | CA1040757A2 Liquid waste treatment apparatus |
| 10/10/1978 | US4119273 System for pollution suppression |
| 10/10/1978 | CA1040324A1 Method of treating waste water with jet nozzles |
| 10/10/1978 | CA1040122A1 Production of algal bio-polymers |
| 10/03/1978 | US4118447 Aerator containing a ballast charge |
| 10/03/1978 | US4118315 Monitoring performance of a waste-water reclamation system; bacteriophage marker, aluminum chloride solution, cellulose acetate filter |
| 10/03/1978 | CA1039864A1 Horizontal rotor for introducing gases into liquids |
| 09/26/1978 | USRE29782 Cyclic oxygenation of BOD-containing water |
| 09/26/1978 | USRE29781 High oxygen utilization in BOD-containing water treatment |
| 09/26/1978 | US4117049 Flexible multi-columnar fluid treatment cellular apparatus |
| 09/26/1978 | US4117048 Apparatus for introducing gas into a liquid |
| 09/26/1978 | US4117047 Sewage treatment |
| 09/26/1978 | US4117044 Aerator |
| 09/26/1978 | CA1039419A1 Method and apparatus for treating liquor containing biodegradable wastes |
| 09/26/1978 | CA1039418A1 counterflow biological treatment of liquids |
| 09/19/1978 | US4115500 Adhering resin coated spherical particles, curing |
| 09/19/1978 | US4115269 Random packing materials |
| 09/19/1978 | US4115268 Waste water treatment rotor |
| 09/19/1978 | US4115266 Aggragation |
| 09/19/1978 | US4115258 Oxygenation |
| 09/12/1978 | US4113613 Catalytically triggered decomposition releasing a gas |
| 09/12/1978 | US4113612 Spontanerous, catalytically triggered decomposition releasing a gas |
| 09/12/1978 | US4113552 Elutriation leg and method |
| 09/12/1978 | CA1038509A1 Device for aerating foaming liquids |