Continuous pre-buried bin for soil heavy metal remediation

Abstract

The invention discloses a continuous pre-buried bin for soil heavy metal remediation. The invention belongs to the field of soil remediation, and the invention discloses the continuous pre-buried binfor soil heavy metal remediation. A bidirectional continuous space is arranged, in a normal state, a buffer solution is released to surrounding soil through a plurality of diffusion whiskers, and thepH value of the soil is effectively balanced; when the buffer solution is released, the buffer solution can form an extrusion effect on the heavy metal ion adsorption powder adsorbing the heavy metalions in the diffusion whiskers, and is extruded from the end parts of the diffusion whiskers; in a negative pressure state, the inner deformation end is deformed, until the inner deformation end is communicated with the diffusion whiskers; new heavy metal ion adsorption powder can enter the diffusion whiskers; the heavy metal ion adsorption powder in the diffusion whiskers can be effectively supplemented, so that the heavy metal ion adsorption powder in the diffusion whiskers can be continuously updated, the sustainable adsorption effect of the pre-buried bin on the heavy metal ions is effectively guaranteed, and the soil remediation efficiency is effectively improved.

Description

technical field [0001] The invention relates to the field of soil remediation, in particular to a continuous pre-embedded bin for soil heavy metal remediation. Background technique [0002] Heavy metals are a type of typical environmental pollutants, with a relative atomic mass between 63.5 and 200.6 and a density greater than 5.0, including heavy elements with significant biological toxicity such as mercury, cadmium, lead, chromium, and metalloid arsenic, as well as zinc, copper, cobalt, Nickel, tin and other general heavy metals with certain toxicity. Heavy metals in water exist in various forms, mainly including ion exchange state, metal salt binding state, organic matter binding state and residue state, etc. Among them, the binding state and exchange state are the most toxic, and the residual state has the least active toxicity. More toxic than other forms of mercury. Heavy metals are not easy to be biodegraded and can be enriched in the living body. For example, the h...

AI Technical Summary

Problems solved by technology

In order to repair your soil polluted by heavy metal ions, embedded parts are usually buried in the soil, but the existing embedded parts for soil remediation generally do not have continuous adsorption of heavy metal ions. The prolongation of the use time will gradually reduce the adsorption capacity of heavy metal ions in the soil, resulting in a decrease in the efficiency of soil repair, and after the repair ability of the embedded parts is reduced, it is necessary to re-excavate and replace the new embedded parts, resulting in a decrease in soil repair efficiency. Overall restoration is affected

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