Eluting agent for repairing stibium and arsenic composite contaminated soil

A technology for compound pollution and contaminated soil, applied in the field of contaminated soil remediation, can solve problems such as poor elution effect, and achieve the effects of simple components, short elution time, and good economic efficiency
CN109456771AInactive Publication Date: 2019-03-12HUNAN AGRICULTURAL UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HUNAN AGRICULTURAL UNIV
Publication Date
2019-03-12
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides an eluting agent for repairing stibium and arsenic composite contaminated soil. The eluting agent comprises, by weight, 4-8 parts of sodium dihydrogen phosphate, 2-5 parts of tartaric acid and 1-4 parts of ammonium oxalate. The eluting agent is used for repairing the composite contaminated soil containing Sb and As, can rapidly remove stibium and arsenic in the composite contaminated soil and is high in removal rate and shorter in eluting time. The eluting agent with simple components is remarkable in effect, low in cost and excellent in economical efficiency. The eluting agent can effectively separate stibium and arsenic in the soil, soil fertility can still be kept after use, crops are planted after the soil is repaired, the content of stibium and arsenic in the crops is remarkably reduced, and the growth status and quality of the crops cannot be affected.
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Description

technical field

[0001] The invention relates to the technical field of contaminated soil remediation, in particular to a leaching agent for remediating antimony-arsenic composite polluted soil. Background technique

[0002] With the development of modern industrialization and urbanization, human activities have led to increasingly serious heavy metal pollution in the soil environment. Heavy metal pollution in the soil environment will reduce the quality of agricultural products, and these products will also bring potential harm to human health after being eaten.

[0003] my country is the most important antimony reserve and antimony production country, and the antimony output accounts for about 84% of the world's total. With the rapid development of industrialization, a large amount of antimony and arsenic smelting residues are discharged into the surrounding environment, resulting in serious antimony and arsenic compound pollution in the soil. Antimony and arsenic have ce...

Claims

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