Full-functional soil heavy metal restoration agent

Abstract

The invention discloses a full-functional soil heavy metal restoration agent, which is prepared from the following raw materials (by weight): 40-45 parts of rice chaff ash, 6-7 parts of ammonium dihydrogen phosphate, 10-12 parts of sawdust, 13-15 parts of lobster powder, 2-3 parts of silicon oxide, 95-100 parts of seeded sunflower disc, 30-35 parts of dried rabbit dung powder, 15-16 parts of kaolin, 6-7 parts of calcium carbonate, 32-36 parts of slash pine needle and a proper amount of water. The soil restoration agent has a significant improvement effect of heavy metal adsorption and passivation. By chemical bond combination of raw materials such as a charcoal matrix, silicon oxide, organic acid and the like, degradation ability of organic pollutants such as polycyclic aromatic hydrocarbon by indigenous microorganisms in soil can be greatly enhanced. With the addition of rice chaff ash and sawdust, etc., content of organic matter in soil is also increased, and soil quality is improved. The product is a full-functional restoration agent for comprehensive improvement of heavy metal pollution, organic pollution and chemical and physical properties of soil.

Description

technical field [0001] The invention relates to the technical field of soil remediation, in particular to a full-functional soil heavy metal remediation agent. Background technique [0002] The sources of heavy metal pollution in my country mainly include industrial "three wastes" discharge, seepage of household garbage, household coal burning, and vehicle exhaust emissions. Industries such as electroplating, plastics, chemicals, and mineral smelting and processing are the main industrial sources of heavy metals. The release of coal combustion is also one of the important causes of soil heavy metal pollution. 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 an increase in local heavy metal content in regional soil. In addition, the long-te...

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

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