Sludge thickening apparatus

Details Sludge thickening apparatus Sludge thickening apparatus

1976-09-30

1978-04-04

Hart, Charles N.

Liquid purification or separation

Recirculation

Serially connected distinct treating or storage units

210197, 210202, 210221P, 210537, C02B 300

Patent

active

040826716

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 under super atmospheric pressure and introduced into the upper feedwell so that it flows therefrom and thickens in the uppper part of the tank by flotation type thickening.

REFERENCES:
patent: 2713026 (1955-07-01), Kelly et al.
patent: 2772234 (1956-11-01), Kelly
patent: 2779730 (1957-01-01), Kelly et al.
patent: 3140259 (1964-07-01), Kelly
patent: 3622508 (1971-11-01), Komline
patent: 3642617 (1972-02-01), Brink et al.

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