Lead zinc ore contaminated soil remediation fertilizer

Abstract

The invention discloses lead zinc ore contaminated soil remediation fertilizer which is prepared from, by weight, 3-5 parts of bacillus conidial powder, 26-30 parts of grass carbon powder, 40-45 parts of wheat bran, 8-10 parts of dregs of tea-oil tree fruits, 3-5 parts of citric acid, 2-3 parts of zinc sulfate powder, 30-35 parts of pinewood, 17-18 parts of siderite slag, 17-18 parts of limonite slag, 67-73 parts of orange peel, 4-6 parts of EM compound microorganism bacterium agents and a proper amount of water. According to the soil remediation fertilizer, for the content of heavy metal, especially the content of lead and zinc, in the lead zinc ore contaminated soil, through the synergistic effect of organic matter and bactericide in the fertilizer, the plant availability of heavy metal, such as lead and zinc is passivated, the toxicity of the lead element and the zinc element in the soil of the plant roots is relieved, meanwhile the organic content of the contaminated soil is greatly increased in match with the grass carbon powder and the dregs of tea-oil tree fruits, breeding of indigenous microorganism in the soil is promoted, and the self purification capacity of the soil is improved.

Description

technical field [0001] The invention relates to the technical field of fertilizers, in particular to a fertilizer for repairing lead-zinc ore polluted soil. Background technique [0002] With the rapid development of the economy and the advancement of industrial technology, the adverse impacts of industrial and agricultural production on the environment have been increasing. Due to the continuous accumulation and dumping of solid waste on the soil surface, harmful waste water has continuously penetrated into the soil, harmful gases and dust in the atmosphere It also continues to fall into the soil with rainwater, causing soil pollution. It not only reduces the yield and quality of crops, but also indirectly endangers human health. [0003] The control of soil pollution is mainly through engineering restoration methods and phytoremediation methods, of which engineering restoration methods mainly include soil improvement methods, electric restoration, soil leaching and heat t...

AI Technical Summary

Problems solved by technology

Not only reduces the yield and quality of crops, but also indirectly endangers human health

[0003] The control of soil pollution is mainly through engineering restoration methods and phytoremediation methods, of which engineering restoration methods mainly include soil improvement methods, electric restoration, soil leaching and heat treatment methods, etc. Engineering treatment measures are usually suitable for small polluted areas and serious pollutants. And the effect of the soil that is easy to spread is more obvious, which can fundamentally improve the soil, but the cost of treatment is high, and it is easy to form secondary pollution, and may damage the soil structure, which may easily lead to a decline in soil fertility

Phytoremediation technology is usually low-cost and can improve soil organic matter content and soil fertility, but plants have limited tolerance to heavy metal pollutants and are only suitable for moderately polluted soil remediation. At the same time, a plant can usually only remediate a certain heavy metal pollution Soil, and it is possible to activate other heavy metals in the soil. It is not effective for the compound pollution of various metals and organic substances. Hyperaccumulators grow slowly, and the restoration period is usually long, which is difficult to meet the requirements of rapid restoration of soil pollution.