Patents
Sitemap › C02 - Treatment of water, waste water, sewage, or sludge › C02F - Treatment of water, waste water, sewage, or sludge › C02F 7 - Aeration of stretches of water
Patents for C02F 7 - Aeration of stretches of water (3,263)
06/1991
06/13/1991CA2005448A1 Circulation and gas exchange in liquids
06/12/1991EP0431498A1 Device for introducing gas into bodies of water
06/06/1991DE3940108A1 Gasification of ponds, streams and lakes for fish rearing - uses a buoyant gasification tube and rope or chain sinker line with hooks to keep gasification tube in water above sludge
05/1991
05/29/1991CN2077864U Suction type oxygen extending device for water wagon
05/15/1991CN2076985U Self-absorbing oxygen-increasing machine
04/1991
04/30/1991US5011372 Aeration apparatus for pond
03/1991
03/27/1991EP0418571A1 Arrangement for the cleaning and aerating of open waters
03/27/1991CN2073873U Self-absorption type turbine oxygen supply machine
03/23/1991CA2025986A1 Purification and aeration of open waters
03/22/1991CA2005513A1 Oxygenation
03/05/1991US4997557 Floating, mixing, aerating and decanting unit
02/1991
02/27/1991EP0414648A1 Wind or wind-photovoltaic power operated oxygenizing device for oxygenizing water
02/22/1991CA2023728A1 Wind or wind-photovoltaic power operated oxygenizing device for oxygenizing water
02/06/1991EP0411637A1 Automatic apparatus for aerating and purifying sea-water
12/1990
12/27/1990WO1990015530A1 Device for organic neutralization and removal of phosphorus compounds present in water basins
12/19/1990CN2067709U Device for improving water quality of shallow water area
11/1990
11/28/1990CN2066442U Device for improving water quality with way of forcing convection circulation in deep water
11/14/1990EP0222799B1 Process for introducing oxygen into water and device for implementing the process
11/07/1990CN1046655A Cultivation apparatus for aquatic production
10/1990
10/17/1990CN2063938U Multifunction aerator
10/17/1990CN1009992B Method of supplying air masses and producing jets of water
09/1990
09/26/1990CN2062729U Opposit rotated waterwheel type oxygen enhancing machine
08/1990
08/23/1990DE3904834A1 Process and apparatuses for inducing a complete circulation of stratified waters by pumping surface water into the depths
08/15/1990CN1044574A Oxygen-increasing machine
06/1990
06/27/1990CN2058675U Lift microporosity aerator
06/12/1990CA1270149A1 Method of supplying air masses and producing jets of water
05/1990
05/02/1990EP0366317A1 Method and apparatus for improving the quality of a large amount of water
05/02/1990EP0366010A1 Mobile device for oxygenating waters
05/01/1990CA1268566A1 Method and device for water-airing
04/1990
04/18/1990CN2056157U Umbrella-type aerator with two rings
04/11/1990CN2055821U Variable microbore aeration device
03/1990
03/28/1990EP0359965A1 Apparatus for replenishing waters with oxygen
03/27/1990US4911849 Method and means of aeration-powered water flow using foil-shaped contour
03/27/1990US4911836 Submerged aeration system
03/06/1990US4906363 Water aeration apparatus
03/06/1990US4906359 Solar activated water aeration station
02/1990
02/22/1990DE3926829A1 Capsule holds chemically active materials under water - until progressive discharge enables float to overcome residual wt.
11/1989
11/30/1989WO1989011454A1 Method for treatment of water and device for application of method
11/21/1989US4882099 Aeration apparatus havine a deicing mechanism and control circuit therefor
11/21/1989US4882072 Method and apparatus for treating bodies of water
11/07/1989US4879046 Vertical circulation, air, bubbling, jets
10/1989
10/31/1989US4877524 Apparatus for treating bodies of water
08/1989
08/23/1989EP0329404A1 Aeration equipment
06/1989
06/29/1989DE3742756A1 Appliance for pumping oxygen-rich surface water into the oxygen-depleted deep water in stretches of standing water
05/1989
05/17/1989CN2037632U Gas-water mixing tube
05/17/1989CN1032927A Circulating water jet aeration facility for iron and manganese removal from the underground water
05/09/1989US4828696 Water aeration apparatus
04/1989
04/25/1989US4824284 Purifying system of water area
04/11/1989US4820457 Apparatus for aerating water
04/04/1989US4818416 To correct chemical, biological or other imbalances, dispensing treatment agent based on volume passed over and detected by boat or vesel
03/1989
03/29/1989CN2034972U Iron and manganese removing device for groundwater
03/09/1989WO1989001915A1 Aeration wheel and plant for aeration of water
02/1989
02/21/1989US4806251 Oscillating propeller type aerator apparatus and method
02/02/1989DE3724692A1 Method for introducing oxygen into water and apparatus for carrying out the method
02/01/1989CN1030738A Method for partially purifying water in continous waters
01/1989
01/25/1989CN2031380U Ship type fishery multi-purpose machine
01/12/1989DE3722227A1 Apparatus for enriching water with oxygen
11/1988
11/30/1988CN88204892U Oxygen-increasing motor boat
11/10/1988DE3712359A1 Apparatus for introducing a pressurised gas as fine bubbles
11/09/1988EP0289999A1 Process and apparatus for the oxygenation of the lower reaches of stagnant water
10/1988
10/25/1988US4780217 Undisturbed natural stratification; pumping, bubble aerating, mixing subsurface returning of deep water
10/20/1988WO1988007977A1 Process and apparatus for purifying water on lake and sea shores
10/13/1988DE3704013C1 Process and apparatus for the purification of flowing waters
09/1988
09/27/1988US4774031 Aerator
09/07/1988CN88202327U Boat propeller aerator
08/1988
08/31/1988CN87216800U Waterwheel type oxygen-enriched ship
08/31/1988CN87215060U Propeller type oxygen-enriched machine for shipborne petrol motor
08/23/1988US4765807 Mixing with oxygen supersaturated water; non bubbling
08/18/1988DE3703562A1 Apparatus for the restoration or sanitation of waters
08/11/1988DE3702425A1 Microbe incubator for regeneration of ailing bodies of water
06/1988
06/21/1988US4752421 Method of supplying air masses and producing jets of water
06/09/1988DE3640964A1 Process and apparatus for introducing air and/or oxygen into activation tanks in waste water purification and for aerating lakes, ponds and rivers
06/07/1988US4749493 Method and apparatus for oxygenating water
06/01/1988CN87207417U Oxygen-enriched machine of inflated water pump
05/1988
05/31/1988US4747958 Method and apparatus for treating bodies of water
05/31/1988CA1237543A1 Device for increasing the oxygen concentration in a subsurface stratum of a thermally stratified body of water
05/04/1988CN87106315A Oscillating propeller type aerator apparatus and methos
05/03/1988US4741825 Mobile vortex shield
03/1988
03/30/1988CN86106359A Apparatus for deep-well aeration treatment of waste water with low energy-consumption
03/23/1988EP0260904A2 Oscillating propellor type aerator apparatus and method
03/02/1988EP0257317A1 Device for the treatment of floors of stretches of water
02/1988
02/24/1988CN87209569U Water and gas-mixed oxygen-enriched machine with revolving drum front-to-back helix
02/18/1988DE3626618A1 Apparatus for handling the beds of bodies of water
02/10/1988CN86209264U Oxygen-richening pump for circulating water
02/09/1988US4724086 Apparatus and method for conditioning stratified water bodies
12/1987
12/16/1987CN86209262U Horizontal pressured air-dissolving device
11/1987
11/25/1987CN87206301U Mixing air blaster with jet-pipe
10/1987
10/27/1987US4702830 Water aeration apparatus
10/14/1987CN86107836A Method of supplying air masses and producing jets of water
10/07/1987EP0240368A2 Apparatus and method for conditioning stratified water bodies
10/07/1987EP0239693A2 Method of supplying air masses and producing jets of water
09/1987
09/30/1987EP0238774A2 Apparatus for water oxygenation
09/30/1987EP0238773A1 Apparatus for raising the oxygen concentration in water
09/30/1987EP0238511A1 Method and device for the oxygen enrichment of waters
08/1987
08/19/1987EP0232607A2 Method and apparatus for the treatment of water, especially for the oxygen enrichment of water
07/1987
07/29/1987CN86207057U Energy-saving installation with deep-well aeration tank for treating waste water
07/14/1987US4680148 Mobile pond aerating system
06/1987
06/25/1987DE3642232A1 Vortex protection device and use thereof in a gas-introduction apparatus
05/1987
05/27/1987EP0222799A1 Process for introducing oxygen into water and device for implementing the process.
05/06/1987EP0220345A1 Water aeration apparatus
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