Method for remedying Cd-As-Cu heavy metal polluted soil

Abstract

The invention provides a method for remedying Cd-As-Cu heavy metal polluted soil. The method comprises the following steps: step 1, uniformly mixing hydrogen peroxide, oxysophocarpine, phosphoric acid, citric acid, palmitic acid, Tween 80 and deionized water to obtain a solution M, uniformly mixing bismuth phosphate, sodium sulfite, ferrous oxide, hydroxypropyl methyl cellulose and deionized water to obtain a solution N, and uniformly mixing bromelain, amylase, glucono-delta-lactone and deionized water to obtain a solution K; step 2, pulverizing the polluted soil, and performing cyclic leaching on the pulverized polluted soil by adopting the solution M; step 3, adding the solution N into the leached soil for uniform mixing; step 4, adding the solution K for uniform mixing and step 5, adding calcium molybdate, calcium oxalate, silkworm shell powder, chicken manure and fly ash for uniform mixing, and performing conservation. According to the method provided by the invention, the remedying effect on the Cd-As-Cu heavy metal polluted soil and the market prospect are good.

Description

technical field [0001] The invention belongs to the technical field of soil remediation, and in particular relates to a method for remediating soil polluted by heavy metals such as cadmium, arsenic and copper. Background technique [0002] Soil is one of the basic elements of the human environment and the material basis for human survival, life and production. Soil pollution refers to the phenomenon that harmful substances discharged from human production and living activities enter the soil, directly or indirectly endangering the health of humans and animals. [0003] Soil heavy metal pollution has also become one of the serious environmental pollution problems. In the field of environmental pollution, heavy metals are usually defined as metal elements or metalloid elements that are obviously toxic to organisms, such as lead, zinc, copper, cadmium, arsenic, mercury, chromium, nickel, etc. These heavy metals will enter the human body through the food chain and accumulate i...

AI Technical Summary

Problems solved by technology

Copper is an indispensable micronutrient element for plant growth and human health, but excessive copper in the soil will affect the normal growth and metabolism of plants, endanger the absorption of nutrients by plants and reduce their yield

In addition, copper in the soil is very toxic to organisms. If a large amount of copper is enriched in the human body, it will harm the liver, gallbladder and other organs in the human body, and at the same time stimulate the human mucous membrane and central nervous system, and even cause metabolism and endocrine disorder, serious

[0004] The remediation function of the remediation technology about heavy metal contaminated soil in the prior art is single, and the remediation effect on cadmium, arsenic and copper contaminated soil is very different and the remediation effect needs to be further improved. Therefore, it is necessary to provide a kind of Remediation of copper-contaminated soil is simultaneously effective and effective

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