摘要
对 3个城市生活垃圾焚烧炉飞灰中二英类浓度分布的实验研究表明 ,飞灰中二英类异构体的浓度分布具有相类似的特征 ,高氯代二英类的含量明显高于低氯代二英类 .飞灰中二英类的毒性贡献主要来自多氯二苯并呋喃 (PCDFs) .布袋除尘器前添加活性炭粉末时 ,飞灰的二英类浓度比没有添加活性炭时高 1 8倍 。
The distribution of dioxins concentration in fly ash, which comes from three municipal wastes incinerator(MWI) in China, was studied in this paper by experimentation. It was concluded that 2,3,7,8 PCDD/Fs homologue patterns of various type of fly ash were quite similar for all three MWIs. Further more, the concentrations of higher chlorinated congeners of dioxins were remarkably higher than those of lower chlorinated congeners. The poison effect of dioxins in the fly ash was mainly caused by PCDFs. If use active carbon powder before the equipment of bag house, the concentration of dioxins will be 1.8 times of that produced without active carbon powder. At the same time, the concentration of dioxins in flue gas will decrease accordingly.
出处
《环境科学》
EI
CAS
CSCD
北大核心
2003年第3期21-25,共5页
Environmental Science
基金
国家环境保护总局科技攻关项目 (98 2 0 4)
关键词
二恶英类
飞灰
形态分布
垃圾焚烧
dioxins
fly ash
pattern distribution
municipal wastes incinerating
