EPA-103-FA12-03-A054

103

18,000 千元

2014/03/05

2014/12/31

陳怡伶

空保處

周怡君

中興工程顧問股份有限公司

大氣空氣

戴奧辛;重金屬;環境監測;汞物種流布

dioxin;heavy metal;environmental monitoring;speciation changes of mercury

張翰青

02-27698388#20863

hanc@mail.sinotech.com.tw

本計畫主要工作內容包括：(1)戴奧辛及重金屬排放資料庫更新與建置。(2)戴奧辛、重金屬及多溴連苯醚排放檢測與環境監測。(3)歷年超標帶奧辛排放源減量輔導。(4)探討水泥窯汞物種流布機制及排放減量策略規劃。(5)協助辦理戴奧辛及重金屬管制，減量，污染事件應變。 推估102年台灣地區戴奧辛排放量約為52.65 g I-TEQ/年；重金屬鉛、鎘、汞、砷排放量各約為13.87噸/年、0.84噸/年、1.87噸/年及3.69噸/年。 針對鋅、鉛二次冶煉及固態廢棄物衍生燃料製程進行戴奧辛排放檢測，重金屬煙道排放檢測則對火化場、鋁、銅二次冶煉進行檢測。 本年度環境空氣戴奧辛監測帄均值均略低於歷年各季。排放源集中區水美測點附近排放源異常排放，改善後戴奧辛空品濃度已下降。 一般空品站測站環境空氣重金屬監測濃度值皆符合歐盟環境空氣品質基準。排放源集中區之蘇澳測點之六價鉻濃度偏高，本計畫亦尋找可能來源，做為未來管制之參考。 於水泥廠區附近以大氣汞自動連續監測系統監測，依監測時風向分析，汞可能來自監測點南方之水泥廠。另於水泥廠區內以手動方式監測，亦曾監測到高濃度粒狀物結合汞，與連續監測結果相呼應。 進行5場次多溴聯苯醚使用工廠附近之環境多溴聯苯醚調查，部分測點下風處濃度略高於上風處，與日本排放源周界監測結果比較，仍屬合理範圍。 針對歷年超標戴奧辛排放源進行8場次改善輔導，提供業者改善建議並追蹤後續改善情形。 水泥窯汞流布調查指出，除原料含汞提供汞來源外，預熱機廢氣造成製程內高汞濃度的循環，使煙囪排放汞濃度不易降低。

戴奧辛;重金屬;環境監測;汞物種流布

期末報告定稿版_公開版.pdf

13MB

2015/5/1 上午 12:00:00

The scope of this project includes: (1) Establishing and updating of the dioxin and heavy metals emission inventory.(2) Monitoring dioxin, heavy metals and PBDEs for the stationary emission and the ambient environment.(3) Counseling the emission sources which had faild to meet the standards.(4) Investigating the speciation changes of mercury in cement plants and emission reduction strategies.(5)Assist with dioxin and heavy metals control, reduction, pollution incident. The total dioxin emission quantity in Taiwan is estimated to be 52.65 g I-TEQ/year. As for the heavy metal emissions in 2013, the total lead emission is 13.88 metric tons/year, cadmium emission is 0.84 metric tons/year, mercury emission is 1.87 metric tons/year, and arsenic emission is 3.69 metric tons/year. Dioxin emission monitoring for secondary zinc processing, secondary lead processing and RDF manufacturing were completed. Heavy metal emission monitoring for secondary aluminum processing, secondary cooper processing and crematoriums were completed also. This year the ambient dioxin monitoring is targeted on the general monitoring stations and monitoring stations around major sources. Unusual emissions near the ShuiMei monitoring station was discovered and was improved. Comparing to last year‘s data, monitoring results are lower this year. The monitoring results of ambient heavy metal concentrations are compliable to the EU air quality standards. Higher concentration of chromium(VI) was discovered around the Suao factory of the Taiwan Cement Corporation, which might be originated from its raw material, magnesia-chrome refractory bricks or chromium steel balls. Compiling the results of regular monitoring stations, the ambient concentration of mercury is between 1.38~4.25 ng/m3. Higher concentrations of gaseous and particulate mercury are higher around an electric-arc furnace in Neipu and the Taiwan Cement Corporation‘s factory in Suao. 5 investigations were conducted around factories that use Polybrominated diphenyl ethers (PBDEs). Higher PBDEs concentration was monitored downwind of these plants. However the results were deemed reasonable according to similar investigation conducted in Japan. This year 8 counseling services were provided to factories that exceed dioxins the emission limits. The fate and transport of mercury in cement kilns was studied. Other than the mercury in the raw material, most of the mercury comes from the exhaust of preheating machine.

dioxin;heavy metal;environmental monitoring;speciation changes of mercury