Method for diagnosing and grading risk of sudden pollution accident at drinking water source

A drinking water and water source technology, applied in the field of grades, can solve the problems of low evaluation accuracy, unspecific risk sources, and the risk level of drinking water sources cannot reflect the actual situation.

Inactive Publication Date: 2011-07-20
CHINESE RES ACAD OF ENVIRONMENTAL SCI
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Problems solved by technology

[0005] The invention not only quantifies the environmental risks of sudden pollution accidents in drinking water sources, but also completes the investigation and identification of environmental risk sources in drinking water sources, and solves the problems caused by unspecific risk sources, ambiguous hazard process, and low evaluation accuracy in the past. The risk level of drinking water sources cannot reflect the actual situation, and provides a complete and systematic classification method for quickly and accurately assessing the environmental risks of sudden accidents in drinking water sources

Method used

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  • Method for diagnosing and grading risk of sudden pollution accident at drinking water source
  • Method for diagnosing and grading risk of sudden pollution accident at drinking water source
  • Method for diagnosing and grading risk of sudden pollution accident at drinking water source

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Embodiment Construction

[0061] The present invention will be further described in conjunction with accompanying drawing and embodiment now.

[0062] Select a drinking water source in a county in Jiangsu Province to carry out environmental risk diagnosis and classification. The drinking water source is a county-owned water source, serving a population of 50,000; the average river width of the water source is 400m, Ey=2.023m 2 / s, the average flow velocity is 2.4m / s, the average water depth is 5m, and the riverbed gradient is 10‰; the economic loss of the enterprise caused by the water cut-off at the water source is 2 million yuan / h.

[0063] (1) Analysis of the scope of environmental risk investigation of drinking water sources

[0064] Based on the known data, the water intake is used as the starting point for calculation of the water source, and the following formula is used to calculate the investigation range of the outer edge of the river bank and the upstream and downstream.

[0065] The inves...

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Abstract

The invention relates to a method for diagnosing and grading the risk of sudden pollution accident at a drinking water source, which comprises the steps of: (1) analyzing environmental risk investigation scope of the drinking water source; (2) identifying potential environmental risk; (3) performing secondary screening based on the environmental risk of hazard area; (4) identifying hazard outcome of environmental risk source, namely estimating the direct hazard of risk source to society and life; (5) accumulating comprehensive hazard risk values of risk source; and (6) grading the risk of sudden environmental pollution at the drinking water source. The method not only finishes the diagnosis for the risk of sudden pollution at the drinking water source, but also completes the investigation on and the identification for the environmental risk source in the drinking water source, thereby solving the previous problem that deviated grading of the risk of the drinking water source is caused by unspecific risk source, obscure hazard process and low estimation accuracy, and a complete and systematic grading method is provided for rapidly and accurately estimating the environment risk of sudden accident at the drinking water source so as to realize the normalized management of risk source.

Description

technical field [0001] The invention relates to a method specially used for quantitatively assessing the risk level of sudden environmental pollution in drinking water sources, and belongs to the technical field of environmental risk impact assessment. Background technique [0002] Drinking water sources are the most concerned and vulnerable environmental protection targets in water pollution accidents. In recent years, a survey of 7,555 high-risk petrochemical and chemical construction projects in my country shows that 50% of high-environmental risk enterprises are located in rivers and other drinking water source-intensive areas, and 3.7% are directly built in drinking water source protection areas. Once such high-risk enterprises have sudden water pollution accidents, it will inevitably lead to water cutoffs in downstream drinking water sources, and the normal production and life of the people will be affected. Therefore, in the classification of environmental pollution ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/00G06Q50/00
Inventor 宋永会彭剑峰马越袁鹏邵爽奉小忧韩璐
Owner CHINESE RES ACAD OF ENVIRONMENTAL SCI
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