The Loads of the Air Pollutants of Urban Areas on a Neighboring Dam and its Water Qality

• Main Authors: Chu, Huei-An, 朱慧安
• Other Authors: Shan-Lein Lo
• Format: Others
• Language: zh-TW
• Published: 1998
• Online Access: http://ndltd.ncl.edu.tw/handle/69983999071480429418

碩士 === 國立臺灣大學 === 環境工程學研究所 === 86 === The air pollutants which are emitted from urban and industrial areas may place a certain burden to the neighboring water bodies. This research studied how the air pollutants of urban areas affect a neighboring dam and its water quality. Through the atmospheric dispersion process, air pollutants move from the Taipei metropolitan (including Taipei City, Taipei County, and Keelung City) to the Fei-Zuei Dam and enter the water body through dry and wet deposition. ISCST3 (Industrial Source Complex Short Before running ISCST3, it was necessary to choose the proper parameter set and edit the file for the model. After getting results, analysis of sensitivity was done. Thus we could revise the parameters to get proper results. The results were compared with the real station values, and calibration was done according to this comparison. The results show that wet deposition places a greater burden than dry deposition does on the water body. Wet and dry deposition of NH4+ together make up a rather large proportion of the total pollution. The ratio was 25.17% in 1994 and 21.88% in 1996. Those of Nitrate make up a smaller proportion: 2.28% in 1994 and 1.98% in 1996; those of sulfate make up a rather low proportion: 0.2% in 1994 and 0.17% in 1996. If we take indirect deposition into account and calculate the NO3- and NH4+ together, th