This project utilized ISCST3 to simulate the air pollutants diffusion, and concentration distribution of three incinerators at Wujih, Hsichou, and Linnei. The ground and high altitude meteorological data were obtained from Air Quality Modeling Center. It was found that similar simulation results were got with different year’s meteorological data and different high altitude meteorological data. The following results were simulation by using 2003 meteorological data. The concentration increases of carbon monoxide, nitrogen dioxide, and dioxins for Wujih incinerator were maximum in winter and minimum in spring. The concentration increase of sulfur dioxide was maximum in summer and minimum in spring. The concentration increases of carbon monoxide, nitrogen dioxide, sulfur dioxide, and dioxins for Hsichou incinerator were maximum in winter and minimum in spring. While those for Linnei incinerator were maximum in winter and minimum in winter. Different scenarios of pollutant emission amounts from the incinerators were tested. The results showed the maximum concentration increase landing-location was the same, but the maximum concentration increase depended on the change of emission. From the comparison of simulation results and dioxin sampling data, it showed that the contribution of incinerators was not significant in the vicinity. From the analysis of backward trajectory line, it was found that there were not obvious connection between incinerators and monitor stations in episode periods. The ratios of simulated concentration increase from incinerators to the data from monitoring stations were very small. Finally, three suggestions are proposed. The first is to use the real measuring data from the emission to simulate its impact on the air quality after Linnei incinerator starting operation. The second is to sample air pollutants near the incinerators and compare with simulations. The third is to continue model simulation and realize long-term trends.

incinerator, ISCST3, monitoring data