Dioxin levels in the emissions from municipal waste incinerators in Taiwan

被引：5
|
作者：
Chang, MB [1 ]
Lee, CH [1 ]
机构：
[1] Natl Cent Univ, Grad Inst Environ Engn, Chungli 320, Taiwan
来源：
CHEMOSPHERE | 1998年 / 36卷 / 11期
关键词：
D O I：
暂无
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
In this study, characteristics of dioxins emission from existing modern MWIs were evaluated via simultaneous sampling of flue gas and various types of fly ashes. Preliminary results showed that PCDDs congeners distributions were quite similar in flue gas and various types of ashes of both MWIs. PCDFs/PCDDs ratio in cyclone ash was lower than that in combustor ash or fabric filter ash excluding economizer ash of MWI-A. Similarly, PCDFs/PCDDs ratio in ESP ash was lower than that in boiler ash. PCDFs concentration was about 1.5 to 4.3 times higher than PCDDs concentration in flue gas of both MWIs. The mass balance factors of MWI-A (0.9 similar to 1.02) were clearly lower than that of MWI-B (7.71 similar to 15.63), indicating that de novo synthesis occurred under the operating conditions of ESP. In other words, MWIs equipped with ESP were less efficient in controlling PCDD/Fs emissions than that equipped with fabric filters. (C) 1998 Elsevier Science Ltd. All rights reserved.
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页码：2483 / 2490
页数：8
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