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Emissions of Polychlorinated Dibenzo-p-Dioxins and Dibenzofurans from the Incinerations of Both Medical and Municipal Solid Wastes

Category: Articles

Volume: 3 | Issue: 1 | Pages: 1-6
DOI: 10.4209/aaqr.2003.06.0001
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Wei-Shan Lee 1, Guo-Ping Chang-Chien1, Lin-Chi Wang2, Wen-Jhy Lee2, Perng-Jy Tsai3, Che-Kuan Chen4

  • 1 Department of Chemical Engineering, Cheng Shiu University, 840, Chengching Rd., Kaohsiung 833, Taiwan, ROC
  • 2 Department of Environmental Engineering, National Cheng Kung University, 1, University Rd., Tainan 70101, Taiwan, ROC
  • 3 Graduate Institute of Environmental and Occupational Health, Medical College, National Cheng Kung University, 138, Sheng-Li Rd., Tainan 70428, Taiwan, ROC
  • 4 Southern Incinerator Plant, Department of Environmental Protection, Kaohsiung Municipal Government, 6, Bei-Lyn Rd., Kaohsiung 812, Taiwan, ROC

Abstract

Emissions of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) from the stack flue gases of four medical waste incinerators (MWIs) and ten municipal solid waste incinerators (MSWIs) were investigated. The mean PCDD/F concentrations in the stack flue gases of these MWIs and MSWIs is 0.521 ng I-TEQ/Nm3 and 0.0533 ng I-TEQ/Nm3, respectively. In the stack flue gases of MWIs, OCDD, 1,2,3,4,6,7,8-HpCDD, 1,2,3,4,6,7,8-HpCDF and OCDF were the major congeners, while in MSWIs, OCDD and 1,2,3,4,6,7,8-HpCDD were the major ones. The mean PCDD/F emission factors (20.1 μg I-TEQ/ ton-waste) of the MWIs was about 210 times of magnitude higher than that of MSWIs, which was 0.0939 μg I-TEQ/ton-waste. In Taiwan, the annual emissions of PCDD/Fs from MWIs and MSWIs are 0.371 g I-TEQ/year and 0.737 g I-TEQ/year, respectively. Although the contribution of PCDD/Fs from MWIs to the atmosphere was 50.3% of that from MSWIs, it should be noted that most MWIs are equipped with a low stack and are situated in the proximity of the residential area and PCDD/F emissions from MWIs could significantly affect its surrounding environment.

Keywords

PCDD/Fs Emission factor Incineration Municipal solid waste, Medical waste


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