Preparing organic powder by anaerobically treating fermentation waste fluid and aerobically treating the digested fermentation liquor
First Claim
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1. A process for producing granulated organic matter comprising the steps of:
- (a) obtaining a fermentation waste fluid;
(b) anaerobically fermenting said fermentation waste fluid to obtain a digested fermentation liquor;
(c) aerobically treating said digested fermentation liquor;
(d) subjecting the aerobically treated digested fermentation liquor to precipitation to obtain a precipitated fraction;
(e) drying or dehydrating the precipitated fraction;
(f) blending the dried or dehydrated precipitated fraction with a fermentation waste fluid which has not been aerobically treated; and
(g) granulating the blended fermentation waste fluid and precipitated fraction obtained from step (f).
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Abstract
The present invention relates to a process for producing granulated organic matters wherein a precipitated fraction obtaied in a settling tank from a methane fermentation fluid having been treated aerobically in an aeration tank is added to a fermentation waste fluid. According to the present invention, there is provided a process for producing physically stable granulated organic matters with reduced increase of stickiness occurring at the time of manufacturing granulated organic matters from fermentation waste fluid.
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Citations
28 Claims
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1. A process for producing granulated organic matter comprising the steps of:
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(a) obtaining a fermentation waste fluid; (b) anaerobically fermenting said fermentation waste fluid to obtain a digested fermentation liquor; (c) aerobically treating said digested fermentation liquor; (d) subjecting the aerobically treated digested fermentation liquor to precipitation to obtain a precipitated fraction; (e) drying or dehydrating the precipitated fraction; (f) blending the dried or dehydrated precipitated fraction with a fermentation waste fluid which has not been aerobically treated; and (g) granulating the blended fermentation waste fluid and precipitated fraction obtained from step (f). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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Specification