Recycling of aquaculture wastewater with low emissions from large-scale pig farms and manure enzymatic hydrolysis and microaerobic composting

Abstract

The invention provides a low-emission farming sewage recycling method for large-scale pig farms and a feces enzymolysis and micro-aerobic composting method, which relates to the field of composting technology and includes the following steps: solid-liquid separation, construction of a fermentation tank, preparation of a feces starter, and pig manure fermentation micro-aerobic Enzymolysis, laying bottom material, preparation of dung water starter, dung water fermentation and circular fermentation; the invention uses a fermentation tank to accommodate dried pig manure, using high-temperature bacteria starter, brown sugar, warm water, soybean meal, tea meal and Rapeseed meal is used to prepare feces starter, and pig manure is fermented and enzymatically hydrolyzed by adding feces starter and protease to pig manure to obtain odorless solid organic fertilizer. Another fermentation tank is used to accommodate pig urine and feces, and the fluid Fermentation agent, brown sugar and warm water are used to prepare dung water starter. By adding dung water starter and α-type amylase to pig urine and feces water for fermentation and enzymolysis, odorless small molecule carbon organic fertilizer water is obtained, which solves the problem of breeding sewage and Problems with unmanageable stools.

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

Images