Deep dehydration recycling method for livestock and poultry feces

Abstract

The invention relates to the field of livestock and poultry feces treatment methods, and in particular relates to a deep dehydration recycling method for livestock and poultry feces. The method specifically comprises the following steps: adjusting the pH value of the livestock and poultry feces to be 2-4, adding ferrite or ferric salt into the livestock and poultry feces with the adjusted pH value, uniformly stirring, subsequently adding hydrogen peroxide into the livestock and poultry feces, stirring for 50-180 minutes, adding a phosphorus curing agent into the treated livestock and poultry feces, adjusting the pH value to be 8.5-10.5, uniformly stirring, and performing filter pressing on the treated livestock and poultry feces by a filer press for dehydration. The method is high in speed, short in period, high in solid recycling rate, high in dehydration degree, low in energy consumption and low in cost.

Description

technical field

[0001] The invention relates to the field of poultry manure treatment methods, in particular to a method for deep dehydration and recovery of poultry manure. Background technique

[0002] In 2003, the amount of manure produced by poultry and livestock in my country was about 3.19 billion tons, which was 3.2 times that of solid waste (1 billion tons) produced by industry in that year, and the amount of manure produced by poultry and livestock is increasing year by year. While the total amount of poultry and livestock manure is large, the degree of intensification of the poultry and livestock breeding industry continues to increase. In 2009, the scale of live pigs, dairy cows and laying hens reached 61%, 42%, and 79% respectively, which makes poultry and livestock manure The contradiction between the environment and the environment has gradually become prominent, and the adverse effects of poultry manure on water, soil and atmospheric environment have attracted...

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