Animal manure treatment production technology for substrate or organic fertilizer raw material

Abstract

The invention discloses an animal manure treatment production technology for a substrate or an organic fertilizer raw material. The technology comprises the following steps of: (1) dehydrating animalmanure to form solid animal manure with a water content of 55-60% and animal manure waste liquid, and performing physical modification on agricultural wastes to form an adsorption medium, (2) stackingthe solid animal manure with the water content of 55-60% for pre-fermentation, mixing the livestock waste liquid and the adsorption medium for stacking and pre-fermentation, and (3) mixing two pre-fermented products obtained in step (2), and inoculating with a fermentation strain for compound fermentation. An animal manure solid-liquid separation technique is adopted to extrude the animal manureto form a solid and the liquid. The animal manure solid is directly stacked for the fermentation, and the liquid and dry wood dust are mixed to directly form a solid with a water content meeting fermentation requirements, and then mixed with the extruded animal manure solid for the direct fermentation. With the adoption of a 'parallel unification' technology, the fermentation efficiency of the animal manure is significantly improved by adjusting and controlling a water content of an animal manure ferment.

Description

technical field [0001] The invention relates to the technical field of animal manure treatment, in particular to a production process for treating animal manure as substrate or organic fertilizer raw material. Background technique [0002] Livestock and poultry manure mainly refers to a type of rural waste produced in the livestock and poultry breeding industry, including pig manure, cow manure, sheep manure, chicken manure, duck manure, etc. Animal excrement is rich in organic matter and nutrients such as nitrogen, phosphorus, and potassium, and can also supply calcium, magnesium, sulfur, and other minerals and trace elements required by crops to meet the needs of various nutrients during the growth of crops. need. Over-concentrated animal husbandry has led to excessive production of livestock and poultry manure in some areas, which cannot be absorbed by traditional fertilization treatment methods, and a large amount of stacking has caused serious pollution to the atmosphe...

AI Technical Summary

Problems solved by technology

However, in the existing treatment technologies, conventional solid-liquid separation is used for the pretreatment of livestock manure, and the waste liquid is difficult to handle, and the efficiency of fermenting biogas is low, and the direct discharge causes great pollution to the environment. The treatment of livestock manure waste liquid is Problems that have plagued farmers for a long time

At the same time, there are also great limitations in the reuse of agricultural residues.

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