Liquid purification or separation – Processes – Chemical treatment
Patent
1985-05-10
1986-12-23
Wyse, Tom
Liquid purification or separation
Processes
Chemical treatment
210220, 2102422, 261122, 261124, 261DIG70, C02F 320
Patent
active
046311343
ABSTRACT:
A process for the aeration of off-water or the like media in an aeration tank with the aid of an aeration face arranged below the water surface as well as an aeration device for carrying out this process in practice are described. The device comprises a rigid, self-supporting supporting body provided with throughholes or being of porous material and covered with an elastic diaphragm; air is supplied to the supporting face of the body at the center of gravity or a gravity line thereof into a deflecting region and from there to the periphery of the body which is slightly raised vis-a-vis the central region of the body, from where the air escapes with decreasing pressure into the water to be aerated. The aeration face can be adapted to be swivelled, and the cross-sectional area of the supporting body can be of pyramid, wedge, circular or frustoconical configuration or it can be vaulted in a concave or convex manner. Basic shapes of the supporting body are a circular or a polygonal, preferably rectangular configuration.
REFERENCES:
patent: 3532272 (1970-10-01), Branton
patent: 3768788 (1973-10-01), Candel
patent: 3997634 (1976-12-01), Downs
patent: 4070279 (1978-01-01), Armstrong
patent: 4288394 (1981-09-01), Ewing et al.
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