Cow dung fermentation method and product of cow dung
A fermentation method and cow dung technology, applied in the fields of application, organic fertilizer, nitrogen fertilizer, etc., can solve problems such as the decline in breeding quality and the difficulty in ensuring the quality of fish meat, and achieve the effects of complete fermentation, promotion of fermentation bacteria reproduction, and short fermentation time
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Embodiment 1
[0018] A cow dung fermentation method, comprising the following steps:
[0019] (1) Cow dung pretreatment: collect cow dung, add 8wt% sodium chloride aqueous solution of 2.2 to 2.5 times the mass of cow dung, stir for 20 to 25 minutes, and then add 20 to 30% of the mass of cow dung disinfectant;
[0020] (2) Cow manure treatment: After the solution of step (1) is left to stand at room temperature for 15 to 20 hours, it is filtered, the filtrate is concentrated to 1 / 3 volume, and urea 9wt%, potassium phosphate 3wt%, chlorine 3wt% zinc chloride, 5wt% copper sulfate, mix well to obtain cow dung liquid; dry the filter residue until the water content is 13-15%, add starter and 30wt% ethanol aqueous solution, ferment for 5-6d, crush to obtain cow dung manure powder;
[0021] (3) Forming: Mix cow dung powder and cow dung liquid in step (2) to prepare a material with a solid-to-liquid ratio of 1:0.4-0.45, mix well, and granulate through a granulator.
Embodiment 2
[0023] A cow dung fermentation method, comprising the following steps:
[0024] (1) cow dung pretreatment: collect cow dung, add 8wt% sodium chloride aqueous solution of 2.4 times of cow dung quality, after stirring for 20 ~ 25min, add 25% peracetic acid of cow dung quality;
[0025] (2) Cow manure treatment: After the solution of step (1) is left to stand at room temperature for 15 to 20 hours, it is filtered, the filtrate is concentrated to 1 / 3 volume, and urea 9wt%, potassium phosphate 3wt%, chlorine 3wt% zinc chloride, 5wt% copper sulfate, mix well to obtain cow dung liquid; dry the filter residue until the water content is 13-15%, add 10wt% yeast and 30wt% ethanol aqueous solution, ferment for 5-6d, crush, get cow dung powder;
[0026] (3) Forming: Mix cow dung powder and cow dung liquid in step (2) to prepare a material with a solid-to-liquid ratio of 1:0.42, mix well, and granulate through a granulator.
Embodiment 3
[0028] The cow dung fermentation products (hereinafter referred to as samples 1 and 2) prepared in Examples 1 to 2 were subjected to project tests, and the test results were as follows
[0029] Test Results:
[0030] Test Item Sample 2 Sample 1
[0031] Organic matter (on a dry basis), % 78.0 62.3
[0032] Protein mass fraction (dry basis), % 8.87 6.32
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