Method for producing organic compound fertilizer by using biogas residues

Abstract

The invention discloses a method for producing organic composite fertilizer by using miasmal residues, belonging to a comprehensive utilization field of agricultural waste. The invention aims at promoting utilization rate of miasmal liquid and the miasmal residues. The method comprises the following steps: a breeding plant establishes a methane project to produce the miasmal residues and the miasmal liquid; the miasmal residues and the miasmal liquid are separated by a solid-liquid separator; crop straws are ground and sieved and the miasmal residues are added to stir and mix; when the mixture is mixed, nutrient absorption substances are added to fix the nutrients easy to run off in the miasmal residues; the contents of N, P and K in the uniform mixture of the miasmal residues and the crop straws are sampled and tested; Nnitrogen fertilizer, phosphate fertilizer and potassium fertilizer are added to enable each of the N, P and K to reach the content of 15 or other ratio according to the contents of N, P and K in the uniform mixture of the miasmal residues and the crop straws; the uniform mixture of the miasmal residues and the crop straws are put into a spiral stir pelletizer to palletize; the palletized grains are parched, sealed and sold. The invention is characterized in that the method can promote utilization rate of the miasmal residues, modify soil characteristics and cultivate effect of fertilizer soil, thus increasing output and revenue.

Description

technical field [0001] The invention relates to a method for producing organic compound fertilizer by utilizing biogas residue, belonging to the field of comprehensive utilization of agricultural waste. Background technique [0002] In recent years, with the continuous improvement of the living standards of urban and rural residents, the demand for meat, eggs and milk has continued to grow. It has promoted the rapid development of the livestock and poultry breeding industry, and the breeding scale has continued to expand. Fecal sewage and other agricultural waste produced by livestock and poultry breeding pose a serious threat to the atmospheric environment around the farm and the living environment of residents, seriously affecting the life of urban residents and the quality and safety of agricultural product production. Harmless treatment. At present, the use of biogas engineering anaerobic fermentation technology to treat livestock and poultry manure is an effective mea...

AI Technical Summary

Problems solved by technology

At the same time, in order to solve the environmental pollution problem of large-scale breeding plants, the country has built many large and medium-sized biogas projects. After desulfurization, the generated biogas is used for power generation or for production and daily use. The biogas residue and biogas slurry are used as fertilizers for agricultural production or directly discharged. into the sewers, resulting in the loss of fertilizers, and the use of biogas residues and biogas slurry as fertilizers still has the problem of transportation difficulties

At present, there is no convenient and reasonable method for effectively utilizing biogas slurry and biogas residue