Treatment of waste liquid and apparatus therefor and a fertiliz

Details Treatment of waste liquid and apparatus therefor and a fertiliz Treatment of waste liquid and apparatus therefor and a fertiliz

1976-12-14

1978-10-10

Lander, Ferris H.

Liquid purification or separation

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

Responsive to fluid flow

210 68, 210 71, 210 73R, 210 74, 71 25, C02C 506

Patent

active

041195388

ABSTRACT:
A process for treating a waste liquid which is obtained from a fermentation process, e.g., an alcohol fermentation, and contains organic and inorganic substances which are useful as fertilizer, is provided which includes combusting a concentrate of the waste liquid and bringing the combustion products containing the ashes which are formed from the inorganic substances and the hot combustion gases into direct contact with a fresh portion of the waste liquid. Thereby the liquid is concentrated by evaporation and a slurry of the ashes in the concentrated waste liquid is formed. The slurry is separated into a solid sediment containing the minerals and a part of the organic components of the liquid and a concentrates mother liquid, at least a portion of which is combusted as the concentrate. By drying the sediment with agitation, a granulate which can be used as a fertilizer can be produced.

REFERENCES:
patent: 3622511 (1971-11-01), Pizzo et al.

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