Apparatus for preparing compost from manure by fermentation

Details Apparatus for preparing compost from manure by fermentation Apparatus for preparing compost from manure by fermentation

1989-07-11

1992-05-26

McMahon, Timothy M.

Chemistry: molecular biology and microbiology

Miscellaneous

71 12, C05F 1702

Patent

active

051167611

ABSTRACT:
In the procedure for producing compost from manure by means of fermentation, in which an oxygen-containing gas and also a gaseous and/or vaporous phase originating from the manure is passed through the manure, the temperature of the manure rises. In order to avoid the temperature rising too high, the gaseous and/or vaporous phase is subjected to cooling outside of the manure to form an ammonia-containing aqueous phase and a residual gas phase. Furthermore, the ammonia is evaporated from the aqueous phase and supplied to the manure along with the residual gas phase. In this way, the ammonia which was hitherto lost in the atmosphere can also be converted into nitrates in the manure, resulting in a higher quality for the manure. Furthermore, less ammonia is discharged in the environment, resulting in less acidification.

REFERENCES:
patent: 2067627 (1937-01-01), Fenske et al.
patent: 3716339 (1973-02-01), Shigaki et al.
patent: 3770385 (1973-11-01), Grey et al.
patent: 4483704 (1984-11-01), Easter, II
patent: 5028400 (1991-07-01), Harandi et al.

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