Study On Health Risk Assessment And Management Method Of Persistent Organic Pollutants In Coking Industry

Persistent Organic Pollutants(POPs) havedrawn the concern of the international communitiesdue to high toxicity, bio-accumulation, persistence and long distance transport which could do a great harm to the ecosystem and human health.According to the report published by UNEP(United Nations Environment Program), the coking industry might be an important source of POPs. However, systematic and scientific method systems were lacked for POPs control in the coking industry for the moment. China was a country with high coking production, so emission characteristics, health risk assessment, risk management strategies and other key issues in the coking industry were studied in this paper. Establishing technology system of POPs controlling pollution risk in the coking industry based on health risk quantitative evaluation would have practical significance for fulfilling performance task,safe guarding the people’s health and promoting the construction of ecological civilization.By developing typical monitoring and literature research, POPs emissions characteristic and emission factors of coking industry had been carried and determined; Based on 4-step health risk assessment of the United States,AERMOD(atmospheric diffusion model) was applied to simulate pollutant diffusion, the numerical simulation method for POPs risk assessment was built and the main factors affecting POPs pollution risks in coking industry were studied combined with the practical example. The decision analysis system of risk management and control were established by using numerical simulation technology as the main means, including quantitative assessment strategies of source control and regional classification control strategies. The results showed that the main way of POPs emissions from the coking industry was the discharge of atmospheric pollutants and the main POPs were PAHs; AERMOD(atmospheric diffusion model) could be implemented for simulating atmospheric pollutants diffusion process and quantitative assessment ofspace distribution to human health risk.The scale and layout of pollution source, population and other factors would have a significant impact on the regional human health risk. Quantitative modelscould be applied to evaluate and select different pollution control measures, which could reduce the regional health risk. Partition differentiation management could be achieved in accordance with the risk level and the efficiency of risk management and control could be improved.