Abstract:
In recent years, with the constantly strengthening of pollution prevention and control, the problem of heavy pollution weather in Beijing-Tianjin-Hebei and its surrounding areas has been initially alleviated. In order to improve the quality of the air environment, implement precise pollution control, and better serve the environmental management of hazardous air pollutants in Beijing-Tianjin-Hebei Region, this paper studies the priority control list of hazardous air pollutants in Beijing-Tianjin-Hebei and its surrounding areas. Taking Beijing-Tianjin-Hebei and its surrounding areas as the main research objects, the literature research method is adopted to establish the alternative list. Collecting the hazardous information of hazardous air pollutants from the alternative list, a two-step screening method is adopted to sum up 10 items including hazard screening indicators, exposure screening indicators and persistence/bioaccumulation screening indicators, and to screen out pollutants with high scores to establish a candidate list. On the basis of the candidate list, three aspects of national emission standards, local emission standards and monitoring methods are selected to form an priority control list. According to the screening results, a list of 12 kinds of pollutants including benzene, ethylene oxide, dioxins, arsenic and its compounds, lead and its compounds, formaldehyde, vinyl chloride, trichloroethylene, 1, 2-dichloropropane, chloromethyl ether, beryllium and its compounds, trichloromethane are formed. The paper is aimed at providing a research basis for the environmental management of hazardous air pollutants during the '14th Five Year Plan' and the publication of Beijing-Tianjin-Hebei priority control list in the future.