A parallel restoration method for farmland heavy metal pollution

Abstract

The invention discloses a parallel restoration method for heavy metal pollution in farmland, which belongs to the technical field of heavy metal pollution restoration. It can be implemented by embedding repair rods in the soil, and uniformly discharging and collecting materials through the soil filter screen, so as to directly The way of water injection penetrates into the soil autonomously, and is doped with heavy metal scavenger and repair microspheres. The heavy metal scavenger uses the infiltration of water to capture the heavy metal ions in the soil and forms insoluble substances, while the repair microspheres infiltrate simultaneously In the process of peeling off the surface, the nutrients are continuously released into the soil to improve the soil properties. At the same time, the insoluble heavy metals are adsorbed and captured, and the magnetic effect of the repair microspheres is used to assist diffusion in the soil and intersect to form a tight repair. Finally, the residual repair microspheres and heavy metals are recovered through a magnetic field, which not only significantly reduces the cost of repair, but also greatly improves the efficiency and effect of repairing heavy metal pollution in farmland.

Description

technical field [0001] The invention relates to the technical field of remediation of heavy metal pollution, and more specifically relates to a method for parallel remediation of heavy metal pollution in farmland. Background technique [0002] Soil is one of the most basic material foundations for human beings to survive, and it is also the final destination of various pollutants. 90% of the world's pollutants are eventually trapped in the soil. Due to the poor mobility of heavy metal pollutants in the soil, the long residence time, and the inability to be degraded by microorganisms, they can eventually affect human health through media such as water and plants. Especially once the farmland is polluted by heavy metals, on the one hand, it will lead to a decrease in food production and waste of land resources. Waste, on the other hand, is easy to enter the human body through food, which poses a great threat to the health and safety of the human body. Therefore, it is necessar...

AI Technical Summary

Problems solved by technology

The use of biological methods to treat heavy metal pollution in soil has low cost and will not cause secondary pollution. It can also restore the soil ecosystem while treating heavy metals. However, the efficiency of heavy metal treatment is low and the effect is poor, and it cannot be efficiently treated. Complete the treatment of soil heavy metal pollution

[0004] Therefore, there is currently no good way to repair heavy metal pollution in farmland, to quickly repair the soil at a lower repair cost, and at the same time restore the fertility of the soil, so that the farmland can be quickly put into use, and the soil resources can be effectively used for agricultural production.

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