Method for preparing straw dairy manure organic fertilizer

Abstract

The invention relates to a method for preparing straw dairy manure organic fertilizer, comprising the steps of mixing a certain amount of straw powder or rice chaff, and the like, with swamp liquid; preparing into swamp liquid straw mixture with proper water content; evenly mixing the prepared swamp liquid straw mixture, the dairy manure with proper water content and zymogeneous bacteria agent; sequentially firstly fermenting, periodically piling, secondly fermenting, periodically piling, dehydrating, and stopping fermenting; and processing, packing or finish machining to prepare the organic fertilizer. The method harmlessly processes the swamp liquid and prepares the organic fertilizer therewith, not only solves the river pollution problem caused by randomly discharging the swamp liquid, but also can use the organic fertilizer for crops.

Description

technical field [0001] The invention relates to a method for processing straw cow dung organic fertilizer. Background technique [0002] In the face of the pollution caused by agricultural production, biogas digesters have been built in many places to solve the pollution of organic matter. However, the biogas residues and liquids discharged by large and medium-sized biogas projects have caused secondary pollution because they have not been effectively utilized. Some projects treat the biogas slurry again and discharge it up to the standard. Although this avoids secondary pollution, it causes a lot of waste of resources. Usually, biogas residue and slurry can be directly applied to farmland as fertilizer. Although this can achieve good results, it is easily affected by the seasonality of crop planting and transportation is troublesome. No one wants to do this. Therefore, many biogas residues and biogas slurry sewage that have not been further treated and greatly exceeded the...

AI Technical Summary

Problems solved by technology

[0002] In the face of the pollution caused by agricultural production, biogas digesters have been built in many places to solve the pollution of organic matter. However, the biogas residue and biogas slurry discharged by large and medium-sized biogas projects have caused secondary pollution due to ineffective utilization.

Some projects treat the biogas slurry again and discharge it up to the standard. Although this avoids secondary pollution, it causes a lot of waste of resources

Usually, biogas slurry can be directly applied to farmland as a fertilizer. Although this can achieve good results, it is easily affected by the seasonality of crop planting and transportation is troublesome. No one wants to do this

Therefore, many biogas residues and biogas slurry sewage that have not been further treated and greatly exceeded the standard are directly discharged into river ditches, polluting water bodies and the environment

[0003] The production of biogas from livestock and poultry manure only utilizes its bioenergy. From the perspective of environmental protection, the livestock and poultry manure that can be diverted from excrement and urine is put into water for digestion, and the sewage treatment capacity is increased by 3-5 times compared with the original one. It is more difficult and has become an important source of pollution, so the environmental conditions near many large and medium-sized biogas stations are poor

Therefore, the treatment of biogas residues and biogas slurry is not good, and water pollution caused by discharge waters has become an urgent problem to be solved.