Simulation test device and simulation test method for ex-situ remediation of contaminated soil by liquid preparations

Abstract

The invention discloses a simulation test device and a simulation test method for ex-situ remediation of contaminated soil by liquid preparations. The simulation test device comprises a liquid preparation conveying unit, a crushing-stirring and liquid preparation spraying unit and a matched sealed stirring container unit. The crushing-stirring and liquid preparation spraying unit comprises a speed adjustment motor, a motor rotation speed controller, a motor shaft, a transmission mechanism, a bearing, a bracket and a hollow crushing stirring shaft with a plurality of hammer blades and spray holes. The method comprises: preparation of a preparation solution, addition of soil, preliminary crushing and stirring, spraying of the preparation solution, fetching of soil and acquisition of a sample, and data analysis process. The simulation test device can fully mix the liquid preparations and the soil on the premise of keeping low soil moisture content by further crushing the soil, and prevents the deviation of test results caused by relatively high soil moisture content and relatively low oxidation-reduction potential; and the system stays in a sealed state and no dust is generated during a contaminated soil remediation simulation test.

Description

technical field [0001] The invention belongs to the technical field of contaminated soil remediation, and in particular relates to a simulation test device and a simulation test method for ectopic remediation of polluted soil by liquid agents. Background technique [0002] With the acceleration of urbanization and industrial transfer, the number of polluted sites that have been relocated or left behind by urban industrial enterprises in my country is increasing day by day. According to preliminary estimates, there are at least hundreds of thousands of industrial pollution sites in my country. Urban polluted sites have become a limiting factor for the safe reuse of land resources in many large and medium-sized cities in my country. The research and practice of site contaminated soil remediation has become an important content in the field of environmental governance in my country. [0003] According to the location of soil remediation, soil remediation technology can be div...

AI Technical Summary

Problems solved by technology

However, when implementing soil remediation projects, it is often impossible to add a large amount of water to the soil to form mud, because the mud is not conducive to the subsequent transportation and resource utilization process, and at the same time causes a waste of resources

This results in the inconsistency between the laboratory simulation test and the scene and parameters of the on-site restoration project, which limits the universality and accuracy of the test parameters to a large extent.

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