A pre-buried soil heavy metal adsorption and transfer device

Abstract

The invention discloses a pre-buried soil heavy metal adsorption and transfer device, which belongs to the technical field of soil remediation. A pre-buried soil heavy metal adsorption and transfer device is located in an adsorption plate by setting magnetic adsorbent particles that can be driven with a magnetic transmission belt The magnetic adsorbent particles form a metal ion adsorption surface, and the adsorption surface reaches adsorption saturation, and is driven upwards into the collection box for collection by control, and the re-exported magnetic adsorbent particles are adsorbed on the conveying magnetic conveyor belt again, forming A new adsorption surface does not need to manually collect and re-embed the adsorbent. In addition, the introduced desorption liquid penetrates into the soil and reacts with the soil to release the metal ions in the soil so that they can be magnetically adsorbed in the adsorption plate. On the one hand, the introduced gas intensifies the fluidity of the desorption liquid, and on the other hand, it is also conducive to driving the flow of metal ions after flowing in the soil, effectively improving the adsorption effect.

Description

technical field [0001] The invention relates to the technical field of soil remediation, and more specifically, relates to a pre-embedded soil heavy metal adsorption and transfer device. Background technique [0002] Soil is an important basis for the natural environment and agricultural production on which human beings depend. Since the 1920s, due to the development of industry, the output of metals has increased significantly, and the resulting heavy metal environmental pollution has also emerged. The heavy metals in the soil are adsorbed on the surface of soil particles in the form of ions or simple substances, or wrapped within the soil. [0003] Heavy metal pollution has shifted from industry to agriculture, from urban areas to rural areas, from surface to underground, from upstream to downstream, from water and soil pollution to the food chain, and from pollution to sudden, chained, and regional outbreaks. . Therefore, it is imminent to seek cost-effective soil heav...

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Problems solved by technology

However, in the existing technology, the adsorbent is simply laid in the soil, and the adsorbent is collected and desorbed regularly. This adsorption method is too static, and the adsorption effect needs to be improved. At the same time, for some soils with serious heavy metals, it is necessary to Carry out two or more adsorption repairs. When the adsorbent is saturated, it needs to be artificially turned over and collected regularly, and then re-bury the new adsorbent in the soil. The operation is more cumbersome

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