Method of and apparatus for processing cattle excrement

Details Method of and apparatus for processing cattle excrement Method of and apparatus for processing cattle excrement

1975-05-09

1976-07-27

Spear, Jr., Frank A.

Liquid purification or separation

Recirculation

Of filtrate

210257R, 210295, 210436, 209 17, 209300, 71 15, 71 21, 426431, B01D 3704

Patent

active

039717208

ABSTRACT:
A method of and apparatus for separating from ruminant animal feces the undigested fibrous material that is preponderantly short pieces which consist of bundles of capillary tubes. The feces are mixed with urine, water from animal washing and preparation for milking, and with other water if needed, to form a homogeneous slurry which is run through tandem perforate drum and roller squeezers that heavily compress the short pieces to express liquid from them while continuously draining off a filtrate of liquid and fine solids which is ultimately put into a pond for use as liquid fertilizer. This leaves a filter mass which is preponderantly the short pieces The filter mass is mixed with clean water to form a suspension which is run through tandem perforate cylinder roller pressers that compress the short pieces under several times heavier pressure to produce a cleansed filter mass and a filtrate which is combined with the original slurry. The cleansed filter mass is excellent bedding which is substantially odorless and effectively free of harmful bacteria.

REFERENCES:
patent: 3375116 (1968-04-01), Anthony
patent: 3864255 (1975-02-01), Swanson
patent: 3875319 (1975-04-01), Seckler et al.

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