Method for determining ecological safety threshold of heavy metal in chemical engineering area

Abstract

The invention discloses a method for determining an ecological safety threshold of heavy metal in chemical engineering areas. The method comprises the following steps: A1, collecting biological toxicity data; A2, screening the collected biological toxicity data according to the preset screening strategy; A3, determining whether the screened biological toxicity data quantity meets a preset data amount threshold; if it is, implementing step A4; and otherwise, supplementing biological toxicity data through the ecotoxicological test, and then implementing the step A4; and A4, based on the screened biological toxicity data, or screened toxicity data and biological toxicity data supplemented by ecotoxicological test, determining the ecological safety threshold of soil heavy metal in the chemical engineering area. The method of the invention can effectively evaluate the soil ecological risk caused by heavy metal pollutants.

Description

technical field [0001] The invention relates to soil ecological technology, in particular to a method for determining the ecological safety threshold of soil heavy metals in a chemical industry area. Background technique [0002] With the rapid development of social economy, the global demand for metals is also increasing, making the mining and smelting of metal deposits present a geometric growth trend. The heavy metals used in large quantities enter the soil through various channels, causing pollution to the soil environment and posing a serious threat to soil ecological security and human health. For example, although the construction and planning of a large number of industrial parks has ensured the organic integration of different enterprises, the aggregation of a large number of enterprises and the discharge of industrial wastewater and liquid waste have also brought certain pressure on the ecological environment of industrial parks and surrounding areas. Especially i...

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Problems solved by technology

[0004] At present, in view of the technical problems of soil heavy metal pollution in my country's chemical industry areas, the ecological safety thresholds of relevant soil heavy metals (lead, chromium) have not been proposed to effectively evaluate the soil ecological risks caused by heavy metal pollutants, and to build a suitable for my country's national conditions. The method of obtaining the ecological safety threshold of soil heavy metals in chemical industry areas, so as to provide direct technical support and decision-making basis for the supervision of soil environmental ecological risks caused by heavy metal pollutants in chemical industry areas

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