Water environment risk three-level evaluation method based on an unascertained mathematical theory

A technology of level evaluation and risk level, applied in the field of level evaluation, it can solve the problem that the water environment health risk evaluation model needs to be improved, and achieve the effect of wide applicability, avoiding financial cost and time cost, and strong practicability.

Inactive Publication Date: 2019-04-12
HOHAI UNIV
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the water environment system itself is a complex system, including the concentration of pollutants and their changes, the characteristics of spatial and temporal distribution of pollutants, and the characteristics of the population of the watershed. The traditional deterministic water environment health risk assessment model needs to be improved.
At present, there are few studies on the overall changes of the concentrations of various harmful substances in the water environment system of the Taoge River System, including chemical carcinogens and non-carcinogenic chemical toxic substances, using uncertainty evaluation methods.

Method used

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  • Water environment risk three-level evaluation method based on an unascertained mathematical theory
  • Water environment risk three-level evaluation method based on an unascertained mathematical theory
  • Water environment risk three-level evaluation method based on an unascertained mathematical theory

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Experimental program
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Effect test

Embodiment 1

[0036] The area where water environmental health risk assessment is required is the Taoge River System in the Taihu Lake Basin.

[0037] Step 1. Identify the research pollutant as NH 3 -N, Pb, As and Cr 6+ (Chemical carcinogens include As and Cr 6+ , non-carcinogenic chemical toxic substances including NH 3 -N and Pb); determine the research sites as three representative monitoring sites of Fenshui Bridge, Shedu Gang Bridge and Dongjiu Bridge Station; obtain the monthly monitoring data in 2017 as shown in Table 2, and determine the pollutant concentration C w The unknown information is shown in Table 3 and Table 4.

[0038] Table 2 Detection data of pollutant concentration at each station (mg / L)

[0039]

[0040]

[0041] Table 3 Uncertain information on the concentration of chemical carcinogens at each site

[0042]

[0043] Table 4 Uncertain information on the concentration of non-carcinogenic chemical substances at each site

[0044]

[0045] Step 2 is to ...

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Abstract

The invention discloses a water environment risk three-level evaluation method based on an unascertained mathematical theory. According to the method, various pollutants in a water environment systemare taken as reference objects, and a water environment health risk grading evaluation method is established on the basis of an unascertained mathematical theory on the basis of a water environment system health risk deterministic evaluation model. According to the method, the risk degree of harm of each harmful substance to the human body and the corresponding credibility distribution can be obtained, the risk level can be divided, the corresponding risk index can be obtained, and a basis is provided for water environment risk management and control. Compared with the prior art, the method issimple, a decision maker can conveniently and rapidly make related decisions, consumption of a large amount of financial cost and time cost is avoided, and the method has very high practicability andwide applicability.

Description

technical field [0001] The invention belongs to the field of water environment health risk assessment, and in particular relates to a three-level water environment risk assessment method based on an unknown mathematical theory. Background technique [0002] In recent years, with the continuous development of social economy and the imperfection of water environment treatment facilities, many harmful substances produced by industrial and agricultural production have been discharged into various water bodies, and the health of water environment has been seriously affected. Frequent risk events have driven water environment health risk assessment to be a hotspot of scientific research, which can quantitatively evaluate the risk and related indexes of various substances in the water environment that may cause harm to human health. However, the water environment system itself is a complex system, including the concentration of pollutants and their changes, the characteristics of s...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): G06Q10/06G06Q50/26
CPCG06Q10/0635G06Q10/0639G06Q50/26
Inventor韦一鸣李大勇张方煜徐伟
OwnerHOHAI UNIV