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Contaminated site ecological risk evaluation method based on scenes

A technology of ecological risk and evaluation method, applied in the field of ecological risk evaluation of polluted sites based on scenarios, to achieve the effect of avoiding ecological risks and improving accuracy

Pending Publication Date: 2022-03-04
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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Problems solved by technology

[0004] The purpose of the present invention is to provide a scenario-based ecological risk assessment method for polluted sites. Scenario refers to the combination of biological and abiotic parameters that characterize pollutant effects. Combining it into the probabilistic ecological risk assessment method can effectively solve the current Insufficiency of Ecological Risk Assessment of Contaminated Sites

Method used

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  • Contaminated site ecological risk evaluation method based on scenes
  • Contaminated site ecological risk evaluation method based on scenes
  • Contaminated site ecological risk evaluation method based on scenes

Examples

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Embodiment 1

[0044] Example 1. Scenario-based ecological risk assessment of polluted sites

[0045]For a certain factory, which is in a closed state, the soil organic matter content is greater than 10%, the pH value is between 7-8.5, and its pollutants include Cd, Cu, Ni and Pb. Its exposure concentrations in different samples are shown in Table 1. The collected toxic effect data of Cd, Cu, Ni and Pb are shown in Table 2, the toxicity data of pollutants to different organisms (half lethal concentration of pollutants to different organisms).

[0046] Table 1. Exposure data for Cd, Cu, Ni and Pb

[0047]

[0048] Table 2 Toxic effect data of Cd, Cu, Ni and Pb (source: ECOTOX database)

[0049]

[0050]

[0051] If the polluted site is to be developed into a green area, the ecological risk assessment will be carried out in Scenario III, and the corresponding protection target is to protect 80% of species from damage.

[0052] By programming the software that can set the parameters...

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Abstract

The invention discloses a scene-based pollution site ecological risk evaluation method. The method comprises the following steps: (1) constructing differentiated scenes according to future land development and utilization modes of polluted sites and bio-available soil parameter pollution, and endowing different protection targets to the polluted sites under different scenes; (2) collecting toxicity data of pollutants in the polluted site on different soil organisms to perform effect evaluation, and measuring exposure concentrations of the pollutants at different sampling points in the polluted site to perform exposure evaluation; according to a protection target obtained through scene matching, effect evaluation and exposure evaluation are combined through a probability ecological risk evaluation method, and the probability of the ecological risk of pollutants in the polluted site is obtained. A series of scenes are formulated according to soil properties and a land development and utilization mode of a polluted site; according to the differentiated protection target formulated according to the scene, the accuracy of ecological risk assessment can be effectively improved, and meanwhile, a pollution control basis can be practically provided for risk quantitative analysis.

Description

technical field [0001] The invention relates to an ecological risk assessment method, in particular to a scenario-based ecological risk assessment method for polluted sites. Background technique [0002] The limited land resources make the development of industrially polluted land with high commercial value the choice of many local governments. Quantitative ecological risk assessment methods can provide guidance for the subsequent restoration and treatment of polluted sites. Probabilistic ecological risk assessment is currently the most widely used quantitative assessment method, which can quantitatively describe the probability of risk occurrence. [0003] However, for polluted sites, they have different land uses in the future, so there are different types of ecological receptors, and pollutants will inevitably cause different ecological effects. At the same time, the soil types of different polluted sites are also very different, and the ecological effects of the same ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q50/26G16B40/00G16B50/30
CPCG06Q10/0635G06Q50/26G16B40/00G16B50/30
Inventor 史雅娟许秋云钱力周譞邵秀清宋帅于名召
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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