Method of treatment of sludges with size-adjusted carbon

Details Method of treatment of sludges with size-adjusted carbon Method of treatment of sludges with size-adjusted carbon

1972-08-09

1976-01-20

Wyse, Thomas G.

Liquid purification or separation

With alarm, indicator, register, recorder, signal or...

Responsive to fluid flow

210 53, 210 77, C02B 120

Patent

active

039336344

ABSTRACT:
A process for concentrating and separating solids from solid/liquid mixtures in the treatment of sewage sludge, which comprises incorporating into such sludge 2 to 10 % by weight of fine dust coal or lignite having such a size distribution that 30 to 50 % by weight of the whole particles have a finer size not greater than 100 mesh and 70 to 50 % by weight of the whole particles have a coarser size exceeding 100 mesh, mixing them under agitation, allowing the resulting admixture to stand still to separate the coal-containing concentrated sludge from the supernatant liquor, and if desired, filtering the coal-containing concentrated sludge to remove water therefrom; and a continuous dehydration apparatus which is used effectively for practice of said process.

REFERENCES:
patent: 2895614 (1959-07-01), Komline
patent: 3049236 (1962-08-01), DeLara et al.
patent: 3142638 (1964-07-01), Blaisdell et al.
patent: 3300403 (1967-01-01), Kehoe
patent: 3690466 (1972-09-01), Lee et al.

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