Online measurements of low-volatile organic chlorine for dioxin monitoring at municipal waste incinerators |
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Authors: | Nakui Hiroyuki Koyama Hiroki Takakura Akito Watanabe Nobuhisa |
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Institution: | a Technology Development Center, Electric Power Development Co, Ltd., 6-15-1 Ginza, Chuo-ku, Tokyo 104-8165, Japan b Osaka City Institute of Public Health and Environmental Sciences, 8-34 Tojo-cho, Tennoji-ku, Osaka 543-0026, Japan c Department of Environmental Engineering, Osaka Institute of Technology, 5-16-1 Omiya, Asahi-ku 535-8585, Japan |
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Abstract: | In this study, an automatic sampling device and an analysis device have been developed for the measurement of low-volatile organic chlorine (LVOCl) in flue gas. The concentrations of dioxins (polychlorinated dibenzo-p-dioxins, polychlorinated dibenzofurans, and dioxin-like polychlorinated biphenyls) have been estimated by online measurements of LVOCl at a municipal solid waste incinerator (MSWI) using these devices. The LVOCl concentration at the outlet of the selective catalyst reactor (SCR) of the MSWI increased momentarily up to 95 μg Cl m−3 during the startup period of the MSWI; subsequently, it gradually decreased to less than 1.0 μg Cl m−3 after 50 h from the start of waste feeding. The concentration of toxic equivalent quantity (TEQ)-Dioxins at the SCR outlet had a linear positive relationship with the LVOCl concentrations. Moreover, the level of TEQ-Dioxins concentration can be estimated by using this relationship with LVOCl. From our results, since the LVOCl concentrations in a flue gas can thus be automatically analyzed every hour by online measurements, the operators of an MSWI would be able to monitor approximate TEQ-Dioxin emissions on a daily basis. |
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Keywords: | LVOCl Surrogate Relationship Dioxin emission MSWI |
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