Soil arsenic-contaminated remediation agent

Abstract

The invention discloses a repairing agent for soil arsenic pollution. The repairing agent includes a stabilizer, an organic material, and an aqueous preparation made of biological bacteria preparations. The stabilizer includes bentonite, diatomaceous earth, hydroxyapatite, calcium and magnesium Phosphate fertilizer, powder made from silicon fertilizer, the biological bacteria preparation is made into a preparation of HT flora. The remediation agent made by chemical and biological methods can make the remediation soil environmental quality meet the requirements of the secondary standard value of China's "Soil Environmental Quality Standard" (GB15618-1995). Moreover, the components used in the chemical powder, the microorganism strains and the culture medium components required by the microorganisms are all cheap and easy to obtain, and the processing cost is low. In terms of operation, it is simple and convenient, and is convenient for popularization and implementation.

Description

technical field [0001] The invention belongs to the technical field of remediation of heavy metal soil pollution, and in particular relates to a formula of a soil arsenic pollution remediation agent and a method thereof. Background technique [0002] Heavy metals generally refer to about 60 elements with a specific gravity above 4.0 or about 45 elements with a specific gravity above 5.0. Heavy metals in environmental pollution research mainly refer to elements with significant biological toxicity such as Pb, Cd, Hg, Cr and metalloid As, and also include heavy metals such as Zn, Cu, Co, Ni and Sn with certain toxicity. Some heavy metal elements are essential elements for the human body and other organisms, but their concentration exceeds a certain range will cause poisoning. [0003] Heavy metal soil pollution refers to the phenomenon that human activities introduce heavy metals into the soil, causing the content of heavy metals in the soil to be significantly higher than th...

AI Technical Summary

Problems solved by technology

One is engineering treatment, such as digging and replacing soil, but the implementation is complicated, the cost is high and the soil fertility is easy to be reduced

The second is chemical treatment, the effect and cost are moderate, the disadvantage is that it is easy to reactivate

The third is agricultural management, which is easy to operate and low in cost, but the cycle is long and the effect is not significant

However, although microbial remediation technology has attracted increasing attention, due to the difficulty in finding suitable strains, most of the reported microbial remediation methods have no significant effect, slow effect, and unstable repair effect, which limits the popularization and application of this technology.