Low-emission breeding sewage recycling and excrement enzymolysis micro-aerobic composting method for large-scale pig farm

Abstract

The invention provides a low-emission breeding sewage recycling and excrement enzymolysis micro-aerobic composting method for a large-scale pig farm, and relates to the technical field of composting. The method comprises the following steps: solid-liquid separation, construction of fermentation tanks, preparation of an excrement fermentation agent, fermentation micro-aerobic enzymolysis of pig manure, laying of a backing material, preparation of a liquid dung fermentation agent, excrement water fermentation and circulating fermentation. Dried pig manure is accommodated through one fermentation tank, the excrement fermentation agent is prepared by using a thermophilic bacteria fermentation agent, brown sugar, warm water, soybean meal, tea seed meal and rapeseed meal, the excrement fermentation agent and protease are into the pig manure to ferment and enzymatically hydrolyze the pig manure to obtain an odorless solid organic fertilizer, swine urine liquid dung is accommodated through the other fermentation tank, the liquid dungwater fermentation agent is prepared by using a fluid fermentation agent, the brown sugar and the warm water, and the liquid dung fermentation agent is matched with the alpha-type amylase to be added into the pig urine liquid dung to carry out fermentation enzymolysis so as to obtain an odorless small molecule carbon organic fertilizer liquid, so that the problem that the breeding sewage and the manure are difficult to treat is solved.

Description

technical field [0001] The invention relates to the technical field of composting, in particular to a low-emission breeding sewage resource method for large-scale pig farms and a method for manure enzymatic hydrolysis and micro-aerobic composting. Background technique [0002] At present, the pig breeding industry is developing rapidly, giving birth to many large-scale pig farms. Large-scale pig farms produce a large amount of pig manure and sewage every day. These pig manure and sewage are good organic fertilizers, but the treatment of large amounts of pig manure and sewage become a thorny problem for farms; [0003] Due to the lack of feasible treatment technology measures, the anaerobic fermentation of pig feces and urine sewage in most pig farms at present turns into biogas residue and biogas slurry, or is used directly without harmless treatment and resource utilization, and a large amount of biogas slurry is returned without dilution. The field will burn the seedlings...

AI Technical Summary

Problems solved by technology

[0002] At present, the pig breeding industry is developing rapidly, giving birth to many large-scale pig farms. Large-scale pig farms produce a large amount of pig manure and sewage every day. These pig manure and sewage are good organic fertilizers, but the treatment of large amounts of pig manure and sewage become a thorny problem for farms;

[0003] Due to the lack of feasible treatment technology measures, the anaerobic fermentation of pig feces and urine sewage in most pig farms at present turns into biogas residue and biogas slurry, or is used directly without harmless treatment and resource utilization, and a large amount of biogas slurry is returned without dilution. The field will burn the seedlings, which will cause the soil to lack oxygen. The pig manure that has not been fermented is directly used in the field. When it meets the temperature suitable for fermentation, it will reach the fermentation conditions. The fermentation process will generate a certain amount of heat, which will burn the roots of the crops. At the same time, the pig manure The most difficult thing to deal with in the field is pig manure water. The organic content of pig manure water is high and the concentration is large. If no effective measures are taken, it will cause continuous stench and have a serious impact on the environment. Therefore, the present invention proposes scale pig manure Low-emission farm sewage recycling and manure enzymatic micro-aerobic composting methods to solve the problems existing in the existing technology, realize full return to the field, quickly increase soil biological activity and organic matter content, reduce the amount of farmland chemical fertilizers, and achieve pollution reduction and emission reduction synergistic effect

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