Sludge thickening apparatus and process

Details Sludge thickening apparatus and process Sludge thickening apparatus and process

1977-12-12

1979-11-06

Castel, Benoit

Liquid purification or separation

Recirculation

Serially connected distinct treating or storage units

210221P, 210197, 210202, 210537, C02B 300

Patent

active

041735340

ABSTRACT:
The following disclosure teaches means for thickening primary and secondary sewage sludge. The disclosed apparatus comprises a tank having upper and lower feedwells disposed therein. Primary sludge is introduced into the lower feedwell and flows into the lower part of the tank to thicken therein. Secondary sludge is aerated and introduced into the upper feedwell so that it flows therefrom and thickens in the upper part of the tank by flotation type thickening.

REFERENCES:
patent: 2679477 (1954-05-01), Kivari et al.
patent: 2772234 (1956-11-01), Kelly
patent: 3140259 (1964-07-01), Kelly
patent: 4082671 (1978-04-01), Kelly

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