098

560 千元

2009/03/16

2009/12/31

賴怡潔

嘉義市政府環境保護局

蘇高正

正修科技大學

環境監測及檢測

焚化廠、戴奥辛、大氣、植物、土壤

incinerator、dioxin、ambient air、vegetation、soil

賴怡潔

07-7310606#2613

lai@csu.edu.tw

本計畫嘉義市焚化廠第一季周界大氣、植物及土壤之PCDD/Fs總I-TEQ平均濃度分別為0.0302 pg I-TEQ/Nm3、1.54及0.618 ng I-TEQ/kg。第二季大氣、植物及土壤之PCDD/Fs總I-TEQ平均濃度分別為0.0548 pg I-TEQ/Nm3、2.82及0.838 ng I-TEQ/kg。由嘉義市焚化廠之煙道廢氣PCDD/Fs特徵剖面分別與其各採樣點周界大氣PCDD/Fs特徵剖面進行主要成分分析，結果顯示焚化廠煙道廢氣與其周界大氣之PCDD/Fs並無明顯關聯性，故焚化廠並非周界大氣PCDD/Fs之主要污染源。另外，比較各採樣點之周界大氣、植物及土壤之PCDD/Fs等位濃度圖及風瑰圖，可知周界介質中PCDD/Fs之分佈與焚化廠無明顯之相關性。嘉義市焚化廠周界大氣PCDD/Fs之濃度與國內不同地區都市垃圾焚化爐周界大氣相較，屬於較低範圍之值，若與國外之調查研究做一比較，該焚化廠大氣中PCDD/Fs濃度和國外郊區較為接近，且遠低於日本法規規範之大氣PCDD/Fs加PCB濃度(0.6 pg WHO-TEQ/m3)法規規範值。嘉義市焚化廠周界植物與土壤中PCDD/Fs含量平均值與國內不同地區焚化爐比較皆屬於較低範圍值，若與國外之研究做一比較，本計畫榕樹葉片中PCDD/Fs平均濃度與韓國Gwangju都會區松樹樹葉較為接近，土壤戴奧辛含量則遠低於我國土壤戴奧辛管制標準1000 pg I-TEQ/g。另由t檢定結果可知，嘉義市焚化廠周界大氣PCDD/Fs濃度較七年前有下降趨勢，應是由於環保署各類污染源PCDD/Fs排放標準生效後，使得91年至98年各類污染源總PCDD/Fs排放量下降所致，但周界植物和土壤PCDD/Fs含量七年前後之變化並不顯著。

焚化廠、戴奥辛、大氣、植物、土壤

嘉義市期末定稿-公開版.pdf

3MB

2010/3/1 上午 12:00:00

The mean PCDD/F concentrations in ambient air, banyan leave and soil nearby the Chiayi municipal solid waste incinerators (MSWIs) are 0.0425 pg I-TEQ/Nm3, 2.18 ng I-TEQ/kg and 0.728 ng I-TEQ/kg, respectively. Based on the PCDD/F concentrations of the three matrices determined at sites upwind and downwind, it was found that the environmental impact of the investigated MSWI was not obvious. PCDD/F concentration isopleths of the three environmental compartments coupled with wind rose of the region proved that the influence of the MSWI on the environment was also rather limited. Consequently, we can conclude that the PCDD/F emission from the MSWI do not have significant impact on the ambient atmosphere. Comparing the PCDD/F I-TEQ concentrations in the ambient air of the selected MSWIs in this study with various areas in Taiwan, we found that the investigated PCDD/F level in ambient air has the loweest PCDD/F I-TEQ concentration. The above results for associated toxicity were significantly lower than 0.6 pg I-TEQ/Nm3, which was the dioxin emission standard in Japan. In addition, the dioxin levels of ambient air, vegetation and soil nearby Chiayi MSWI are lower than those reported in previous study by Taiwan EPA in 2002. The above results indicate government regulation on dioxin emission did inhibit the emission of PCDD/Fs from MSWIs.

incinerator、dioxin、ambient air、vegetation、soil