Treatment technology of livestock and poultry manure

Abstract

The invention relates to a treatment technology of livestock and poultry manure. The technology comprises the following steps: S1, collecting the manure; S2, carrying out dry-wet separation; S3, temporarily storing manure liquid; S4, carrying out hydrolytic acidification; S5, blending; S6, carrying out CSTR (Continuous Stirred-Tank Reactor) treatment; S7, carrying out multi-grade precipitation. According to the treatment technology provided by the invention, the sequence of technology steps is adjusted; the dry-wet separation is adjusted and is carried out after manure collection, so that thesolid content in the manure liquid is reduced before the steps of temporarily storing the manure liquid, blending and carrying out the CSTR treatment and the possibility of blocking a pipe is reduced;meanwhile, the effects of the hydrolytic acidification, the blending, the CSTR treatment and the multi-grade precipitation are also increased; the manure treatment quality and effect are improved; almost biogas liquid formed by the precipitation is clear liquid and can be conveyed by utilizing a pipeline, so that the technology can be applicable to long-distance and large-area farmland irrigation. The dry-wet separation step is adjusted and is carried out before the CSTR treatment, so that the content of the solid manure in the CSTR treatment is reduced, and furthermore, the CSTR treatment effect and treatment capacity are greatly improved.

Description

technical field [0001] The invention relates to a feces treatment process, which belongs to the technical field of sewage treatment, in particular to a treatment process of livestock and poultry manure. Background technique [0002] Livestock and poultry manure is rich in organic matter and nitrogen, phosphorus, potassium and other elements needed for the growth and development of crops. my country has always used it as a traditional agricultural fertilizer; when manure is treated, it generally uses anaerobic fermentation, aeration, sterilization, and oxidation pond treatment. , effluent, agricultural irrigation and fertilization methods for treatment and reuse, while reducing waste emissions, it also achieves the purpose of resource regeneration. [0003] Nowadays, livestock and poultry manure, such as cow manure, are generally treated with the following processes: manure collection-manure temporary storage-hydrolysis acidification-deployment-CSTR (continuous stirred reactor...

AI Technical Summary

Problems solved by technology

[0004] Based on the above technical problems, the present invention provides a treatment process for livestock and poultry manure, thereby solving the technical problems that the manure liquid is easy to block pipes after treatment in the existing production process, it is inconvenient to transport and clean up, and it is impossible to irrigate large areas and long distances.

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