Microorganism chelating agent for producing bio-organic fertilizer by removing organic solid waste heavy metal

Abstract

The invention discloses a microorganism chelating agent for producing bio-organic fertilizer by removing organic solid waste heavy metal, wherein the microorganism chelating agent comprises a culture medium and a fermenting chelating bacteria in weight ratio of 1:9, the culture medium comprises the following materials in parts by weight: 60 parts of turf, 10 parts of activated carbon, 10 parts of sugar mud, 5 parts of rapeseed meal and 5 parts of wheat bran; the fermenting chelating bacteria comprises the following raw materials in parts by weight: 0.5 part of aspergillus niger, 0.5 part of white-rot fungi, 1 part of cyanobacteria, 1.5 part of candida pseudotropical, 1.5 part of lactic acid bacteria, 0.5 part of acidithiobacillus ferrooxidans, 0.5 part of streptomycete, 1.5 part of cellulose, 1.5 part of glucoamylase and 1 part of non-ionic surfactant. The microorganism chelating agent is capable of removing the heavy metal ion in the organic solid waste so as to sufficiently utilize the organic waste resource, the waste is avoided, the pollution is prevented, and the environment friendliness is achieved.

Description

technical field [0001] The invention relates to a microbial fermentation chelating agent for removing heavy metals in organic solid waste to produce bio-organic fertilizer and its preparation and use methods, belonging to the field of environmental protection. Background technique [0002] Bio-organic fertilizer is an organic fertilizer that is processed from organic solid waste after fermentation, deodorization and complete decomposition of organic solid waste. Bio-organic fertilizer uses organic solid waste as raw material, which can condition the soil, activate the microbial activity rate in the soil, overcome soil compaction, increase soil air permeability, improve soil fertility, and make food crops, economic crops, vegetables, fruits and vegetables It can greatly increase production, so it can reduce environmental pollution, and is safe and non-toxic to people, livestock and the environment. It is an environmentally friendly fertilizer and has been vigorously promoted ...

AI Technical Summary

Problems solved by technology

Although the compound type metal chelating agent is easy to prepare, it can only be put into quantitatively, and its application range is also very limited. At present, most of them can only be used in sewage treatment and soil remediation. Heavy metal ions do not perform well in chelation

Because in organic solid waste, heavy metal ions are absorbed by the fiber of organic solid waste and wrapped in the fiber, and cannot directly react with externally added reagents. If the compound type heavy metal chelating agent is used directly, it cannot carry out organic matter. Degradation, heavy metal ions are not degraded from the fiber, and cannot be chelated with chelating agents, and the chelating effect is very poor

[0005] Since the heavy metal content in most organic solid wastes is greatly exceeded, they cannot be used as raw materials for bio-organic fertilizers, and organic resources are wasted a lot. Therefore, a method that can effectively remove heavy metal ions in organic solid wastes heavy metal chelating agent

Images