Remediation agent and remediation method for heavy metal contaminated soil

Abstract

The invention relates to the technical field of soil remediation, in particular to a remediation agent and remediation method for heavy metal contaminated soil. The remediation agent for the heavy metal contaminated soil comprises 2-16 parts of humic acid, 5-10 parts of succinic acid, 5-20 parts of sawdust, 2-10 parts of bentonite, 10-20 parts of sodium polyacrylate, 5-10 parts of honeycomb briquette ash, 5-20 parts of seaweed residues, 2-10 parts of zeolite, 5-10 parts of nano hydrogel, 10-30 parts of charcoal, 10-20 parts of Fe-Mn binary oxide, 5-10 parts of sodium pyrophosphate and 2-10 parts of microorganism mixed bacteria. The remediation agent is good in repairing effect and low in cost. The remediation method for remediating the heavy metal contaminated soil through the remediationagent is simple, heavy metal in the soil can be efficiently solidified, and the water quality grade of the soil penetrating fluid is improved.

Description

technical field

[0001] The invention relates to the technical field of soil remediation, in particular to a remediation agent and a remediation method for heavy metal polluted soil. Background technique

[0002] Soil pollution has become one of the main factors restricting the sustainable development of human society, and it is a current and long-term challenge faced by countries all over the world. The main causes of soil pollution are excessive use of chemical fertilizers and chemical pesticides, improper disposal of various sewage, sludge and organic waste, accidental discharge of harmful substances, and long-term accumulation of various pollutants in the soil. Soil pollution causes secondary pollution to groundwater and surface water, and enters the human body through the food chain through drinking water or soil-plant systems, endangering human health.

[0003] Excessive heavy metals in the soil will cause pollution, which poses a great threat to crop growth and human ...

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