Method for producing organic fertilizer by reutilizing liquid pig manure

Abstract

The invention provides a method for producing organic fertilizer by reutilizing liquid pig manure. The used raw material is liquid pig manure generated by flushing piggery feces in a pig farm, and the auxiliary material is a mixture of mushroom residues, rice hulls and wood dust. The technical process comprises the following steps: mixing mushroom residues, rice hulls and wood dust, cutting into strips, spraying liquid pig manure at fixed periods, and fermenting the strips for composting for 60 days while adding liquid pig manure every 5-18 days for 7 times and turning over and throwing once every 3 days. The produced organic fertilizer has an organic content of 47.86%, a total nitrogen content of 1.79%, a total phosphorus content of 1.59%, a total potassium content of 1.73%, and a total nutrient of 5.11%, and meets the agricultural industry standard NY525-2012 for organic fertilizer. The method of the invention solves the waste water treatment problem of enterprises which cleans breeding feces by flushing, reduces environmental protection cost, and generates economic benefits by producing organic fertilizer.

Description

technical field [0001] The invention belongs to the agricultural intensive production technology, and relates to a method for producing organic fertilizer from pig manure as a resource. Background technique [0002] Over the past 30 years of reform and opening up, my country's animal husbandry has entered the stage of large-scale breeding. The intensive breeding industry is unmatched by any country in the world. Pig farms with tens of thousands or even hundreds of thousands of heads can be seen everywhere, ensuring the demand of our people for pork products. At the same time, it is accompanied by the annual output of billions of tons of water-soaked excrement produced by the highly intensive aquaculture industry due to the washing of aquaculture waste. Due to the lack of bearing soil around a large number of aquaculture farms, the effective utilization rate of this type of resource is not high. Difficult to handle, not only greatly wasted a large amount of nutrient resource...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of harmless treatment of manure with high water content in aquaculture enterprises, develop and develop a kind of organic fertilizer formula and process that use water flushing manure as raw material, mushroom slag, rice bran and sawdust mixture as auxiliary materials, can Effective resource utilization of pig manure water produced by farming enterprises to wash farm manure to produce organic fertilizers, resulting in economic benefits, and at the same time can reduce the cost of water flushing manure treatment and effectively protect the environment

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