垃圾焚烧过程中二噁英的生成机理与控制研究进展

Research progress on the formation mechanism and control of dioxins in waste incineration

二噁英因其极强的毒性和较高的环境稳定性而被广泛关注,研究二噁英的生成途径和影响因素是从源头控制二噁英的产生和排放的有效措施。垃圾焚烧是二噁英生成的重要过程。介绍垃圾焚烧过程中二噁英生成的3种路径,系统阐述了从头合成和前驱物生成的反应机理,着重分析了不同反应条件下,不同因素对二噁英生成过程的影响,并对后续学者对二噁英生成机理的深入研究给出了一些建议。

Dioxins have drawn much attention because of their strong toxicity and high environmental stability.The study on the generation pathway and influencing factors of dioxins is an effective measure to control the generation and emission of dioxins from the source.The waste incineration is one of the main sources of dioxins.In this paper,three pathways of dioxins generation in the process of waste incineration was reviewed.The reaction paths of DE novo synthesis and the generation of dioxins from precursors are systematically described,and the influence of different factors on the formation of dioxins under different reaction conditions are emphatically analyzed.Further study on the formation mechanism of dioxins in the process of waste incineration was proposed as well.