Method and apparatus for evaluating land reuse at contaminated site

Abstract

The embodiment of the invention discloses a method and apparatus for evaluating land reuse at a contaminated site. The method comprises the following steps that: the toxicity of soil leachate of the land at a target contaminated site is evaluated and a soil leachate toxicity evaluation result is obtained; if the soil leachate toxicity evaluation result shows that the land has no toxic effect, terrestrial organism short-term / acute toxicity evaluation is carried out on the land at the target contaminated site; and if the terrestrial organism short-term / acute toxicity evaluation result shows thatthe land has no toxic effect, terrestrial organism long-term / chronic toxicity and genotoxicity evaluation is carried out and an availability level of the land at the target contaminated site is determined based on the terrestrial organism long-term / chronic toxicity and genotoxicity evaluation results. Therefore, the accuracy of the reusable type of the land at the contaminated site is improved.

Description

technical field [0001] The invention relates to land reuse technology of polluted sites, in particular to an evaluation method and device for land reuse of polluted sites. Background technique [0002] With the rapid development of modern industry and the acceleration of the urbanization process, the industrial structure has been continuously adjusted, resulting in great changes in the urban land structure, and the industrial enterprises in the city have been demolished or shut down outside the city. After the demolition or closure of industrial enterprises, the pollution of soil and groundwater in the remaining sites has become increasingly prominent. The number of industrial enterprises in my country's cities is nearly 375,100, of which enterprises located in municipal districts account for more than 48%. At present, more than 100,000 enterprises have been shut down and relocated in my country, leaving behind a large number of polluted sites. In the face of the ever-incr...

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Problems solved by technology

[0005] However, the evaluation method for the land reuse of polluted sites, due to the complex situation of the polluted sites, the possible presence of many pollutants in the soil, chemical analysis cannot be carried out one by one, and it is difficult to reflect the comprehensive pollution status of the soil only by measuring some specific pollutants, and There are interactions between pollutants, it is difficult to determine the compound pollution effect of pollutants through chemical analysis, and the content of each pollutant in the polluted site cannot reflect the adaptive environment of the actual organisms in the polluted site. Therefore, the accuracy of the evaluation method not tall

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