Method of aeration at specific depth and pressure conditions

Details Method of aeration at specific depth and pressure conditions Method of aeration at specific depth and pressure conditions

1987-10-08

1989-07-04

Fisher, Richard V.

Liquid purification or separation

Processes

Chemical treatment

261 87, C02F 174, C02F 700

Patent

active

048448168

ABSTRACT:
A spiral tube aerator for waste aeration which includes a shaft rotatably driven by a motor, the shaft carrying a mixing chamber, an air channel extending along the shaft and opening through at least one outlet of the mixing member, a blower for delivering air through the air channel, the mixing chamber being submerged in waste water at least to a depth of 50 cm below the waste water upper surface, and the blower providing a pressure in the range 0-35 mbar lower than the pressure exerted by the waste water at the outlet.

REFERENCES:
patent: 3778233 (1973-12-01), Blough et al.
patent: 3782702 (1974-01-01), King
patent: 3975469 (1976-08-01), Fuchs
patent: 4280911 (1981-07-01), Durda et al.
patent: 4308221 (1981-12-01), Durda
patent: 4540290 (1985-09-01), Jarvinen et al.
German Utility Model 7,411,389 Abstract, Foreign Patent Journal, German, Heft 18-35, May-Aug. 1974 issue, p. 1182.
Chemical Engineers' Handbook 5th ed., Perry & Chilton (ed.), McGraw-Hill Book Co., 1973, pp. 6-21-6-25.

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