A kind of accelerated carbonization tester for polluted soil and its application

Abstract

The invention relates to an accelerated carbonization tester for polluted soil, which comprises a water-retaining top plate (5), a sample chamber and a base sequentially connected from top to bottom, the water-retaining top plate (5) is covered on the upper end of the sample chamber, and the The sample chamber includes a sample chamber main body (1), and a sample chamber upper end flange (2) and a sample chamber lower end flange (3) respectively arranged at the upper and lower ends of the sample chamber main body (1), and the base includes a base flange (4) and the liquid collecting tank (13) arranged under the base flange (4), and the lower end flange (3) of the sample chamber is sealingly connected with the base flange (4). Compared with the prior art, the invention has the advantages of high accuracy of test results, no cross-contamination between samples, high degree of carbonization of polluted soil, and the like.

Description

technical field [0001] The invention relates to the technical field of contaminated soil remediation, in particular to a contaminated soil accelerated carbonization test device and an accelerated carbonization simulation test method thereof. Background technique [0002] With the acceleration of urbanization and industrial transfer, the number of contaminated sites relocated or left behind by urban industrial enterprises in my country is increasing day by day, and site-contaminated soil has 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] Solidification and stabilization has become the main technical method for heavy metal contaminated soil remediation in my country. At present, provinces and cities such as Hunan, Hubei, Chongqing, Jiangsu, Zhejiang a...

AI Technical Summary

Problems solved by technology

[0013] Some researchers have tried to use accelerated carbonation technology to study the long-term stabilization effect of cement-based or other solidified materials on soil pollutants, but the research process often has the following two deficiencies: (1) The test materials are generally solidified bodies / blocks, Therefore, the accelerated carbonation research cases of stabilized soil are relatively scarce; (2) Measures to prevent cross-contamination of samples were not taken during the accelerated carbonation test, which will significantly affect the authenticity and accuracy of the test results sex

[0015] If the stainless steel frame structure in the carbonation box is changed to an impermeable trough structure, the water flow from the upper frame to the lower frame can be avoided, but a large amount of water may be generated in the trough structure, resulting in cross-contamination between samples; Putting the sample in a Petri dish or other container will affect the contact area of ​​the soil sample or test piece with carbon dioxide, resulting in different degrees of carbonization of the soil sample or test piece in different parts, thus affecting the authenticity and accuracy of the test results

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