Air quality impacts of power plant emissions in Hainan Province, 2015
KAN Hui1, BO Xin2, QU Jia-Bao2,3, YANG Chao-Xu4, WU Peng-Cheng5, TIAN Fei6, MO Hua2, ZHAO Xiao-Hong2, ZHOU Xue-Shuang7
1. Academy of Environmental Planning & Design, Co., Ltd., Nanjing University, Nanjing 210093, China;
2. The Appraisal Center for Environment and Engineering, Ministry of Environmental Protection, Beijing 100012, China;
3. School of Science and Technology of Environmental, HeBei University of Science and Technology, Shijiazhuang 050000, China;
4. College of Resources and Environmental Engineering, Jilin Institute of Chemical Technology, Jilin 132022, China;
5. Chinese Academy for Environmental Planning, Beijing 100012, China;
6. Shandong Academy of Enviromental Science, Jinan 250013, China;
7. Department of Ecology and Environmental Protection of Hainan Province, Haikou 570100, China
Based on the continuous emission monitoring systems (CEMS), environmental statistics, pollutant discharge permit and emission inventory of power plants in Hainan Province in 2015, the difference of pollutant emissions from power plants in Hainan under different methods was analyzed, and the variation rule of power plants emissions was acquired. In this paper, three situations including current situation, pollutant discharge permit situation and ultra-low emission situation were considered, and impacts of power plants on the air quality of Hainan province under three situations were simulated using CALPUFF model. The results showed that the emissions of various pollutants from power plants vary greatly under different statistical methods, and the maximum difference can reach 5.65times. In the time dimension, the monthly distribution of pollutant emissions from thermal power industry was relatively stable ranging from 7% to 10% and 24-hour fluctuation was characterized by "two peaks and two valleys". In terms of air quality, the concentration distribution of SO2, NOx, PM2.5 and PM10 generally showed a trend of high in west and low in east. Under current situation, the impacts of power plants on the average of annual concentration of each pollutant were SO2 0.001~0.015μg/m3、NOx 0~0.01μg/m3、PM10 0.001~0.006μg/m3、PM2.5 0~0.003μg/m3, and most of the highest concentration occurred in Dongfang and Lingao. The degree of impact of power plants on the atmospheric environment was permit > current > ultra-low. When the pollutant discharge permit is implemented, the annual average concentration of PM10 and NOx emitted from power plants increases by 50% and 38%, respectively, compared with the current situation. After the full implementation of ultra-low emission, there is a significant improvement in the air quality, with the annual average concentration of SO2 and PM2.5 for each city reduced by 57% and 69%, respectively, compared with the current situation.
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