Soil restoration agent capable of inhibiting heavy metal diffusion pollution

Abstract

The invention discloses a soil restoration agent capable of inhibiting heavy metal diffusion pollution. The soil restoration agent capable of inhibiting heavy metal diffusion pollution is prepared from the following raw materials in parts by weight: 25-26 parts of fine sand, 20-22 parts of wood charcoal, 2-3 parts of magnesium sulfate, 14-15 parts of goat bone powder, 8-10 parts of calcium biphosphate, 82-86 parts of deseeded sunflower head, 33-36 parts of switchgrass branches and leaves, 22-25 parts of kaolin, 6-8 parts of calcium carbonate, 30-36 parts of slash pine needle and a right amount of water. The soil restoration agent can form stable chelate compounds with heavy metal ions in the soil, effectively adsorb and fix the free heavy metal ions in the soil, lower the activity of the heavy metals and prevent the plants from absorbing the heavy metals. The porous biological charcoal is utilized to specifically adsorb the heavy metal ions so as to control the transfer of the heavy metal ions in the soil, thereby lowering the pollution diffusion on the premise of treating the soil pollution. The soil restoration agent has the advantages of short restoration period and wide application range.

Description

Technical field [0001] The invention relates to the technical field of soil remediation, in particular to a soil remediation agent for inhibiting heavy metal diffusion and pollution. Background technique [0002] The sources of heavy metal pollution in my country mainly include industrial "three wastes" emissions, domestic waste seepage, household coal burning, and automobile exhaust emissions. Electroplating, plastics, chemicals, mineral smelting and processing industries are the main industrial sources of heavy metals. The release of coal is also one of the important causes of heavy metal pollution in the soil. Motor vehicle exhaust can also significantly cause heavy metal pollution in the soil on both sides of the road. The content of some heavy metal elements in municipal solid waste exceeds the standard, and long-term stacking will also cause heavy metals to leak into the soil, resulting in increased local heavy metal content in the regional soil. In addition, long-term unr...

AI Technical Summary

Problems solved by technology

Heavy metal elements are easy to combine with the sulfhydryl group in the active part of the enzyme, and the metal element will replace the essential elements in the sulfur protein, such as Mg2+, Ca2+ and other biologically necessary elements. The antioxidant system in the system wreaks havoc

[0004] At present, the remediation technology of heavy metal-contaminated soil mainly adopts chemical means, but a large number of chemical agents used in the remediation process can easily cause soil re-pollution