Two-stage combined continuous sterilization, deodorization and deep dehydration treatment process of livestock and poultry manure

Abstract

The invention provides a two-grade combined continuous sterilization, deodorization and deep dehydration treatment process for livestock and poultry manure and belongs to the technical field of dehydration treatment for the livestock and poultry manure. The process comprises the following steps: putting the livestock and poultry manure into a manure storing tank for storage; conveying the stored livestock and poultry manure into an electrodialysis unit for primary dehydration and primary sterilization; conveying waste liquid obtained by the dehydration of the electrodialysis unit into a wasteliquid treatment unit for treatment; taking the treated waste liquid as liquid fertilizer; conveying odor generated by the electrodialysis unit into an odor treatment unit for treatment; conveying materials subjected to the primary dehydration into a microwave drying unit for secondary dehydration and secondary sterilization, so as to lower the moisture content of materials to be less than 10%; and after condensing gas generated in a microwave drying process in a condensation unit, conveying the gas into the odor treatment unit for deodorization treatment. The process provided by the inventionis low in use cost, simple to operate and rapid in treatment speed; and the treated livestock and poultry manure is high in solid recycling rate, high in dehydration degree and high in heat value; and a recycling and harmless target of a whole system is realized.

Description

technical field [0001] The invention relates to the technical field of livestock and poultry manure dehydration treatment, in particular to a two-stage combined continuous sterilization, deodorization and deep dehydration treatment process of livestock and poultry manure. Background technique [0002] The annual output of livestock and poultry manure in China is large, and the water content is high. Direct stacking without treatment will affect the healthy development of the ecological environment. At the same time, livestock and poultry manure with high water content is not conducive to the utilization of manure as a resource, and it will also increase transportation costs. Therefore, its dehydration is the primary task of subsequent resource utilization. [0003] At present, domestic and foreign dehydration methods of livestock and poultry manure are mainly divided into physical, chemical and biological methods. Commonly used methods include gravity dehydration, chemical ...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of deep dehydration of livestock and poultry manure with high water content, the present invention provides a two-stage combined continuous sterilization, deodorization and deep dehydration treatment process of livestock and poultry manure

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