Separation of sludge

Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Responsive to fluid flow

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210 13, 210 20, 210 97, 210197, C02C 108

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039533280

ABSTRACT:
A method for the separation of sludge in which a rising stream of liquid bearing suspended material is established in a clarifying trough and concentrated suspended material is drawn off by suction at that zone in the trough where the tendency of the material to sink owing to gravity is substantially the same as its tendency to be carried upwards in the stream, part of the drawn off material being fed back to an aeration chamber.

REFERENCES:
patent: 3053390 (1962-09-01), Wood
patent: 3216573 (1965-09-01), Irion
patent: 3385444 (1968-05-01), Dufournet
patent: 3537583 (1970-11-01), Wahner et al.
patent: 3607737 (1971-09-01), Gamer
patent: 3709363 (1973-01-01), Smart et al.
patent: 3770624 (1973-11-01), McKibben et al.
patent: 3805957 (1974-04-01), Oldham et al.

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