燃煤電廠排放之戴奧辛與重金屬健康風險評估 -以台中電廠和興達電廠為例

The Health Risk Assessment for Dioxins and Heavy Metals Discharged from A Coal-fired Power Plant -Case Studies of Taichung Power Plant and Hsinta Power Plant

邱心怡(Hsin-Yi Chiu)

指導教授 ： 馬鴻文

國立臺灣大學/工學院/環境工程學研究所/碩士(2009年)

https://doi.org/10.6342/NTU.2009.03122

摘要

本研究的目的是研究台灣2座燃煤火力發電廠所排放之戴奧辛與重金屬經ISCST3模擬後沈降於鄰近鄉鎮，透過實地多介質傳輸模式計算出附近居民於各種攝食途徑所暴露之健康風險。
研究方法是將燃煤電廠週邊25公里*25公里範圍劃分網格點，以鄉鎮為單位取同一鄉鎮內網格點之ISCST3模擬結果計算該鄉鎮的大氣沈降量分布，將此資料輸入具有分布參數之多介質傳輸模式中，以得到各衝擊鄉鎮之各暴露途徑之風險分布，再依族群的特性分成四大類暴露族群(農夫、一般成人、農夫小孩、一般小孩)來探討研究結果，並針對兩座廠址的研究差異進行比較。
研究結果顯示2座燃煤電廠週邊的居民健康致癌風險均低於10-6，危害商數小於1.0。發電機組規模大小與風險結果不一定有相關;同時週邊地區產業活動的特性(如漁業和農業)影響著各暴露途徑的風險分析結果。

關鍵字

戴奧辛 ； 重金屬 ； 風險評估 ； 燃煤電廠

並列摘要

This study aims to evaluate the risks for nearby residents’ health condition regarding the possible release materials containing dioxins and heavy metals from two coal-fired power plants in Taiwan, especially the risks via dieting and local-grew foods.
By using ISCST3, I assessed the air depositions and concentrations as a result of air emissions from the two coal-fired power plants by simulating the impacts in the unit of 25km squares within one official town.. First I analyzed the risk distributions of these two facilities inside their impact zones. And then I provided the comparison results among four risk-exposed groups ( farmer, adult in general, farmer’s child, child in general), particularly the similarities and difference between two power plants.
The results show that gross risk of having cancer between two neighborhood areas with coal-fired power plants are below 10-6, and the hazard quotients are less than 1.0. And the risk for the health of people in the neighborhood is not necessarily related to the size of the generators at the coal-fired power plants. Also, the risk of health was deeply affected via the way people live and make living in the neighborhoods, in other words, the type of industry in the community, (ex. agriculture and fishery).

並列關鍵字

Dioxins ； Heavy Metals ； Risk Assessment ； Coal-fired Power Plant

參考文獻

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