Yeong-Shing Wu1, Chang-You Tsai2, Ken-Hui Chang This email address is being protected from spambots. You need JavaScript enabled to view it.2, Chow-Feng Chiang This email address is being protected from spambots. You need JavaScript enabled to view it.1

1 Department of Public Health, China Medical University, Taichung 40402, Taiwan
2 Department of Safety, Health and Environmental Engineering, National Yunlin University of Science and Technology, Yunlin 64002, Taiwan


Received: June 29, 2020
Revised: October 3, 2020
Accepted: November 3, 2020

 Copyright The Author(s). This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are cited.


Download Citation: ||https://doi.org/10.4209/aaqr.2020.06.0358  

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Cite this article:

Wu, Y.S., Tsai, C.Y., Chang, K.H., and Chiang, C.F. (2020). Impact of Air Pollutants Emitted by Taichung Power Plant on Atmospheric PM2.5 in Central Taiwan. Aerosol Air Qual. Res. https://doi.org/10.4209/aaqr.2020.06.0358


HIGHLIGHTS

  • The CMAQ/MM5 model was validated by the monitoring PM2.5 level of the 11 stations.
  • Most of the daily average contribution was less than 5 µg m–3 at each station.
  • The maximum annual average contribution of TCPP to a station was 2.0%.
  • The maximum daily and hourly average contributions were 17% and 60%, respectively.
  • In most stations, contribution of the red-grade days accounted for < 10% in a year.
 

ABSTRACT


The Taichung Power Plant (TCPP) is the second largest thermal power plant in the world and has been a highly controversial source of PM2.5 emissions. In this study, the CMAQ/MM5 model was validated and used to simulate the PM2.5 levels of the 11 stations in central Taiwan. The Base Case with all emission sources and the Control Case without TCPP emission were simulated. The difference between the two simulated results determines the contribution of TCPP emission. The results showed that most of the daily average contribution was less than 5 μg m-3 at each station in year. However, outlier contribution, representing the extreme episode, could reach to 15 μg m-3 in autumn. Although the maximum annual average contribution of TCPP to a single station was 2.0%, the maximum daily and hourly average contribution could be as high as 17% and 60%, respectively. In most stations, the contribution of the red-grade days (> 54 μg m-3) accounted for less than 10% in a year. The contribution might be underestimated as the temporal variation was not considered particularly in the peak-power operation of summer.


Keywords: PM2.5; CMAQ; Taichung Power Plant; Air pollution.




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