Soil heavy metal restoration agent capable of enhancing organic carbon level

Abstract

The invention discloses a soil heavy metal restoration agent capable of enhancing organic carbon level. The soil heavy metal restoration agent is prepared from the following raw materials in parts by weight: 3-5 parts of calcium oxide, 9-10 parts of tea powder, 8-10 parts of monoammonium phosphate, 15-17 parts of edible fungus dreg, 30-32 parts of wood dust, 2-3 parts of potassium oxide, 75-90 parts of deseeded sunflower head, 32-35 parts of maize straw, 26-30 parts of kaolin, 9-11 parts of calcium carbonate, 35-38 parts of slash pine needle and a right amount of water. The soil restoration agent can simultaneously effectively lower multiple heavy metal pollutants in polluted soil. The added fungus dreg, wood dust and the like can enhance the organic carbon level in the soil, thereby enhancing the carbon-nitrogen ratio of the soil, increasing the holding capacity of the soil for nitrogen and other nutrient elements, being beneficial to fertilizing the soil by fertilizer application, further optimizing the soil structure, improving the stability, water retentivity, microbial activity, nutrient exchange and many other factors of the soil aggregate, and implementing the restoration treatment on the polluted soil.

Description

technical field [0001] The invention relates to the technical field of soil remediation, in particular to a soil heavy metal remediation agent for improving organic carbon levels. 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 a...

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