A method for determining the protection distance of environmental health risks in chemical industrial parks

Abstract

The invention provides a method for determining the environmental health risk protection distance of a chemical industry park, which belongs to the field of environmental science and environmental health risk. The method includes six steps: conduct a list of air pollution sources and environmental risk sources of all chemical enterprises in the chemical park; establish an index system of environmental health risk acceptability, including ambient air quality, environmental risk acceptability, and human health risk acceptability. Three first-level indicators of acceptance; simulated analysis of ambient air quality; environmental risk analysis; human health risk assessment; three first-level indicators of comprehensive ambient air quality, environmental risk acceptability, and human health risk acceptability. Based on the calculation and analysis results, comprehensively analyze the range of environmental health risk acceptability indicators in chemical industry parks, and based on this, the environmental health risk protection distance and the environmental risk management countermeasures for different protection distances are given.

Description

technical field [0001] The invention belongs to the field of environmental science and environmental health risks, and provides a method for determining the protection distance of environmental health risks in chemical industry parks, more specifically, a method for determining chemical industry parks that comprehensively considers environmental air quality, environmental risks, and human health risk factors. The method of protection distance. Background technique [0002] During the production process of chemical enterprises, air pollutants are discharged in an unorganized and organized manner, which pollutes the surrounding environment of the enterprise and poses health risks to the surrounding population; at the same time, chemical enterprises are involved in the production, use, and Sudden incidents or accidents during storage, transportation and operation may cause leakage of toxic, harmful, flammable and explosive substances, which will affect and damage personal safet...

AI Technical Summary

Problems solved by technology

However, the determination method and application of the health protection distance and the atmospheric environment protection distance have relatively large limitations.

[0009] First, although the health protection distance and the atmospheric environment protection distance both protect human health, the calculation methods of the two distances are different, and there is a large gap between the calculation results, and even contradictions, which bring great inconvenience to the actual operation and management departments

[0010] Second, the two methods are not really based on the protection of human health.

Both the sanitary protection distance and the atmospheric environment protection distance are based on the "Ambient Air Quality Standard" (GB3095-2012) and the "Industrial Enterprise Design Hygienic Standard" (TJ36-79). The pollution covered by these two standards on the one hand species are limited, on the other hand, the scientificity and usability of the standard values ​​are still to be discussed

There are dozens of pollutants discharged by chemical enterprises, while the "Ambient Air Quality Standard" (GB3095-2012) only has 8 routine pollutants and 7 characteristic pollutants. At the same time, the formulation of GB3095-2012 has considered China's economic and social development stage, there is still a certain gap between the standard value and the World Health Organization (WHO) "Air Quality Guidelines" (2005 global update); "Industrial Enterprise Design Hygienic Standards" (TJ36-79) stipulates that harmful substances in the atmosphere of residential areas The highest allowable concentration (34 pollutants), but the standard stipulates the highest value of the allowable concentration, not the allowable value of the long-term exposure concentration. At the same time, TJ36-79 has been implemented in August 2010 by the "Industrial Enterprise Design Hygienic Standard" (GBZ1-2010), and the GBZ1-2010 standard canceled the maximum allowable concentration of harmful substances in the atmosphere of residential areas (34 pollutants), so the maximum allowable concentration of harmful substances in the atmosphere of residential areas in TJ36-79 can no longer be used as related work based on

[0011] The third is that the health protection distance and the atmospheric environment protection distance are set for a certain enterprise or even a certain device. At present, my country's chemical enterprises are managed in parks, and the pollutants emitted by multiple enterprises have a concentration effect. However, the current method This problem was not considered, resulting in the set protection distance being smaller than the actual required protection distance

[0012] Fourth, these two methods both consider the protection distance under normal working conditions of the enterprise, but do not consider the environmental risk protection distance under the accident state

Images