Apparatus for dissolving air in water and subsequent reduction o

Details Apparatus for dissolving air in water and subsequent reduction o Apparatus for dissolving air in water and subsequent reduction o

1979-08-16

1981-06-23

Castel, Benoit

Liquid purification or separation

With means to add treating material

Directly applied to separator

210220, 209170, C02F 124

Patent

active

042749590

ABSTRACT:
Waste water and sludge is supplied through an inlet 12 to a flotation basin 10 where a skimmer 14 collects floating solids and sweeps sunken solids into a bottom discharge trough. Water from the basin is drawn off through a line 16 and fed by pumps 18, 20 into an air pressurized container 26 through an ejector 24 which draws in and dissolves the compressed air in the water by aspiration or eduction. The air saturated water is then fed back into the basin through valves 42, 44 where the reduced pressure releases the air in the form of micro-bubbles, which reduce the surface tension of the waste water to release sludge particles and float them to the surface for skimming off.

REFERENCES:
patent: 2793185 (1957-05-01), Albrektsson et al.
patent: 3179252 (1965-04-01), Vrablik
patent: 3542675 (1970-11-01), Mail et al.
patent: 3966598 (1976-06-01), Ettelt

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