Experimental apparatus used for research on soil heavy metal prevention and control technology

Abstract

The invention discloses an experimental apparatus used for research on soil heavy metal prevention and control technology. The apparatus comprises a porous cylindrical reaction container with an open upper end, a stainless steel barrier cylinder and a cylindrical packing groove, wherein the porous cylindrical reaction container is formed by splicing of a rectangular plate, the end parts of two short edges of the rectangular plate are respectively provided with a snapping buckle and a first snapping groove which can be snapped together, the porous cylindrical reaction container is formed through cooperation between the snapping buckles and the first snapping grooves, the sidewall of the porous cylindrical reaction container is provided with a plurality of circular holes allowing a soil sample to be contacted with a filling material during experiment, the cylindrical packing groove is sleeved in the porous cylindrical reaction container, and the bottom of the porous cylindrical reaction container is in fixed connection with the bottom of the cylindrical packing groove. The experimental apparatus can be used for both overground experiments and underground experiments for research on soil heavy metal prevention and control technology and is expected to be used in in-situ remediation of heavy metal-contaminated soil.

Description

technical field [0001] The invention relates to an experimental device used for research on soil heavy metal resistance and control technology, and belongs to the technical fields of pollution ecological restoration and pollutant reduction and control. Background technique [0002] For a long time, human activities have made the content of mercury, cadmium, chromium, lead and metalloid arsenic in soil greatly exceed the background value of these elements in soil, causing serious soil heavy metal pollution. Heavy metals are often toxic to organisms, and easily enter the human body through air, water, and food, causing harm to the health of the population. The existing heavy metal-contaminated soil treatment technologies mainly include engineering remediation measures including foreign soil, soil replacement, topsoil removal, deep plowing, etc., and methods including fixation / stabilization, electric restoration, complexation leaching, redox, etc. Incorporated physicochemical ...

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Problems solved by technology

[0003] In order to overcome the shortcomings of the existing soil heavy metal resistance and control technology, such as high treatment cost, large amount of engineering, easy to cause secondary pollution, and the treatment effect is greatly affected by environmental conditions, etc., the present invention provides a soil heavy metal resistance and control technology. Experimental setup for research

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