Technology and system for preparing organic fertilizer from livestock and poultry manure

Abstract

The invention discloses a technology and a system for preparing an organic fertilizer from livestock and poultry manure. The technology comprises the following steps: (1) treating the livestock and poultry manure by a solid-liquid separation device; (2) mixing the treated livestock and poultry manure with straw to form a mixture; (3) conveying the mixture into a reaction kettle; (4) closing the reaction kettle, opening a gas-liquid separation device, and enabling the interior of the reaction kettle to be filled with high-pressure steam through a steam inlet; rotating a rotating shaft and swinging a connecting rod to fully mix the mixture; (5) after reaction is carried out for a period of time, closing the gas-liquid separation device, and maintaining the pressure; (6) stopping the actions of the rotating shaft and the connecting rod, switching on a discharge valve, and conveying the organic fertilizer treated by pressure maintaining into a stockyard; and (7) stirring the organic fertilizer to reduce the temperature. According to the technology for preparing the organic fertilizer, a full-automatic production line is used for carrying out batch treatment on the livestock and poultry manure, the treated livestock and poultry manure is high in content of organic matters, and generated organic matters can be easily absorbed by soil.

Description

technical field [0001] The invention relates to the technical field of preparing organic fertilizer by using livestock and poultry manure, in particular to a process and system for preparing organic fertilizer by using livestock and poultry manure. Background technique [0002] With the rapid development of China's animal husbandry and the extensive implementation of intensive pig farming, a large amount of pig manure is concentrated in the farm. Due to the high water content of pig manure, it is not easy to store and has a strong odor. If the traditional treatment method of transporting pig manure to the farmland is adopted, it will not only require a lot of manpower and material resources, and the transportation cost will be high, but also because it cannot be transported in a short time. Transported out will cause environmental pollution and affect human and animal health. [0003] According to the survey, the current annual production of livestock and poultry manure in ...

AI Technical Summary

Problems solved by technology

However, due to the need to input bacteria, this treatment method not only increases the difficulty of configuring the process and is difficult to realize automatic production, but also increases the production cost and lowers the economic benefits brought by the treatment of livestock and poultry manure.

On the other hand, the organic matter content in the organic fertilizer produced by the above method is low, about 45%-55%, and the organic matter prepared by this method is not easy to be absorbed by the soil, and the improvement effect on the soil not obvious

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