High-efficiency pig manure fermentation method

Abstract

A high-efficiency pig manure fermentation method comprises the following steps: step (1), mixing 60-80 parts of pig manure, 8-15 parts of bran, 10-18 parts of rotten fruit residue and 2-8 parts of iron powder to prepare a fermentation substrate; step (2), adding water to adjust the moisture content of the fermentation substrate to a range of 55-70%; step (3), inoculating the fermentation substrateagainst complex inocula in an inoculation amount of 2-5%, wherein the strain combination of the complex inocula is bacillus subtilis + saccharomycetes + actinomycetes; and step (4), carrying out anaerobic fermentation culture for 16-22 days. The high-efficiency pig manure fermentation method has the following advantages: the decomposition of the pig manure can be effectively promoted by choosingauxiliary materials for the fermentation substrate and adding multi-enzyme preparations and the complex inocula; the preparation of the auxiliary materials enables the fermentation substrate to be loose and air-permeable and to have a balanced and rich nutrition structure; probiotics can absorb and convert various nutrients provided in the fermentation substrate so as to keep good biological activity, and the probiotics with high activity act on the fermentation substrate, so that the nutrients in the fermentation substrate can be effectively converted.

Description

technical field [0001] The invention belongs to the technical field of animal source waste fermentation, and in particular relates to a high-efficiency pig manure fermentation method. Background technique [0002] In recent years, the intensification of my country's animal husbandry has developed rapidly, and the breeding methods have produced a large amount of poultry manure. According to statistics, by 2010, the total discharge of animal manure in my country was 1.9 billion tons, and the average amount of pollution per hectare of cultivated land was nearly 2 tons. It is estimated that by 2020, the total discharge of livestock manure will rise to 3 billion tons. In 2010, the results of my country's "First National Pollution Source Survey Bulletin" showed that the harmless, resourceful and commercial disposal rate of livestock and poultry manure in my country only accounted for 29%, and the discharged chemical oxygen demand accounted for 95.78% of agricultural non-point sour...

AI Technical Summary

Problems solved by technology

However, the content of cellulose and lignin in agricultural waste is high, and it is difficult to decompose. Direct anaerobic fermentation has a series of problems such as low gas production efficiency and incomplete fermentation.

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