| 英文摘要 |
The scope of this project includes: to survey existing emission sources of dioxin and heavy metals; to execute the investigation for dioxin and heavy metal emissions from the selected stationary sources; to update and establish the emission inventory of dioxin and heavy metals; to develop control strategy for dioxin and heavy metals. The achievements of this project are described as below:
One large scale municipal solid waste incinerator (MSWI), one middle/small incinerator and one activated carbon regeneration plant were investigated in this project. The mean total PCDD/F concentration of large scale MSWI, one middle/small incinerator and one activated carbon regeneration plant were 0.0374 ng I-TEQ/Nm3 (range= 0.0258~0.0465 ng I-TEQ/Nm3), 0.500 ng I-TEQ/Nm3 (range= 0.166~0.857 ng I-TEQ/Nm3) and 0.00860 ng I-TEQ/Nm3 (range= 0.00685~0.0108 ng I-TEQ/Nm3), respectively. All of them are lower than the regulation limit of Taiwan EPA. The mean content of Pb of the large scale MSWI was 0.0136 mg/Nm3; those of Cd and Hg were below the detection limit. The mean contents of Pb, Cd and Hg of the middle/small incinerator were all below the detection limit, those of Pb, Cd and Hg of the activated carbon regeneration plant were 0.00797 mg/Nm3, 0.000473 mg/Nm3 and ND, respectively. Based on the investigation data, the measured concentrations of heavy metals are far below the limits listed in the “Stationary pollution source air pollutant emissions standards” by Taiwan EPA. The annual PCDD/F emissions of the large scale MSWI, the middle/small incinerator and the activated carbon regeneration plant were 0.0630, 0.00344 and 0.000274 g I-TEQ/Y. The annual emissions of Pb, Cd and Hg of the large scale MSWI were 35.1, 0.0906 and 1.36 kg/Y, respectively. The annual emission of Pb, Cd, and Hg of the middle/small incinerator were 0.0811, 0.0167 and 0.0111 kg/Y, respectively. And that of the activated carbon regeneration plant were 0.321, 0.0154 and 0.0231 kg/Y, respectively. This project reviewed current control and management strategies for dioxin and heavy metals regulated by Taiwan EPA. The management strategy of dioxin and heavy metals in Pingtung County were drafted.
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