Water environment ecological risk evaluation model based on multi-level comprehensive evaluation

A comprehensive assessment and ecological risk technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the difference in chronic effects of exposed species without considering exposure differences, ecosystems, can not reflect the level of environmental pollution, is not Risk probability and other issues

Inactive Publication Date: 2014-06-11
金小伟
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] (1) The exposure concentration is always replaced by the average value, which cannot reflect the real environmental pollution level
[0006] (2) It does not take into account the differences in the exposure of individuals within the population, the differences in the chronic effects of exposed species, and the differences in the ecosystem
[0008] (3) The calculation result of the quotient value method is a definite value, not a statistical value of risk probability, so it cannot be explained in risk terms, so the quotient value method can only be used for low-level risk assessment

Method used

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  • Water environment ecological risk evaluation model based on multi-level comprehensive evaluation
  • Water environment ecological risk evaluation model based on multi-level comprehensive evaluation
  • Water environment ecological risk evaluation model based on multi-level comprehensive evaluation

Examples

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Embodiment Construction

[0032] Taking nonylphenol pollution in surface water in my country as an example, the multi-level comprehensive assessment model used in this application is applied.

[0033] The exposure concentration (EEC) range of nonylphenol in water source water in my country is 30.05-288.75ng / L, and the PNEC value calculated based on its reproductive toxicity results is 0.12μg / L, according to the qualitative evaluation model The calculated risk quotient range of nonylphenol in different watersheds in my country is 0.35-1.77. The risk quotient results formed by the level 1 qualitative evaluation model are as follows: figure 1 shown by figure 1 It can be seen that the risk quotient of nonylphenol in the Yangtze River Basin is greater than 1, and there is a potential risk. From the comparison of different watersheds, the pollution status of nonylphenol in my country: Yangtze River Basin> Haihe River Basin> Pearl River Basin> Liaohe River Basin.

[0034] The specific steps of level 2 equ...

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Abstract

The invention provides a method for comprehensively evaluating the ecological risk of a water environment by using multiple levels, namely continuous application from low-level screening to high-level risk evaluation. A quotient method and a probability risk evaluation method are integrated, and the method disclosed by the invention mainly comprises two steps of qualitative evaluation and quantitative evaluation.

Description

technical field [0001] The invention relates to water environment ecological risk assessment. Background technique [0002] Ecological risk assessment (Ecological Risk Assessment, ERA) is a process of predicting the possibility of harmful effects of environmental pollutants on the ecosystem or a part of it. Unfavorable changes, and ultimately provide decision support for risk management. Ecological risk assessment is a combination of ecological assessment and risk assessment. Ecological assessment focuses on exposure assessment and effect assessment, while risk assessment focuses on the development and utilization of risk levels and related risk assessment techniques. Ecological risk assessment consists of a "three-step approach", namely question formulation, analysis (exposure and effects) and risk characterization. Ask questions, that is, the viewpoints and questions need to be clearly defined before the evaluation, so that the collected data can answer the questions in ...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): G06F19/00
Inventor金小伟王业耀吕怡兵施丽娟
Owner金小伟