【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 ,而尾气中二英类浓度相应降低更多还原

【Abstract】 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.更多还原