Aligned remediation method for farmland heavy metal pollution

Abstract

The invention discloses an aligned remediation method for farmland heavy metal pollution, and belongs to the technical field of heavy metal pollution remediation. The mode of burying the remediation rod in the soil can be realized, the materials are uniformly discharged and collected through the soil separation filter screen; the water is directly injected into the soil to automatically permeate into the soil; a heavy metal capturing agent and repairing microspheres are doped; the heavy metal trapping agent is used for trapping heavy metal ions in the soil by virtue of the permeation effect ofwater and forming indissolvable substances; in the synchronous permeation process of the remediation microspheres, nutrient substances on the surface layer are continuously peeled off and released into the soil to improve soil properties, and insoluble substances of heavy metals are adsorbed and captured; the remediation microspheres are dispersed in soil in an auxiliary manner under the magneticaction of the remediation microspheres and intersect with one another to form a tight remediation net, finally, the residual remediation microspheres and heavy metal are recycled through a magnetic field, and the remediation efficiency and effect on farmland heavy metal pollution are greatly improved while the remediation cost is remarkably reduced.

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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