Mercury emitted from flue gas has been a typical kind of globally hazardous atmospheric pollutants. The efficient control is therefore significant for clean and sustainable industrial development. This paper focused on mercury emission behavior and the characteristics of typical industrial processes. Particularly, the work reviewed the control techniques and commented on the latest progress of harmless treatment techniques. It is found that non-ferrous metals smelting and coal combustion are the primary sources of atmospheric mercury, accounting for about 80% of the total emissions. Compared with controlling mercury emission from the source and the process, the end-of-pipe treatment technologies were characterized by high efficiency, with removal rate of Hg^p exceeding 90%. During the flue gas purification process, mercury are merely separated, while the perniciousness is still existed. After heat treatment and plasma method, the mercury can be desorbed from the absorbents, through which the activity of adsorbents can be restored. Simultaneously, mercury can be purified into mercury by chelating agent, acid washing, and electrolysis, thereby realizing resource utilization. The paper also highlighted the advantages and constraints of emission control techniques, harmless and resourceful treatment. Moreover, some new ideas for the efficient disposal of mercury were provided.

烟道气中的汞一直是全球有害的大气污染物的典型代表。因此，有效的控制对于清洁和可持续的工业发展具有重要意义。本文着重于汞的排放行为和典型工业过程的特征。特别是，该工作回顾了控制技术并评论了无害治疗技术的最新进展。发现有色金属的冶炼和燃煤是大气中汞的主要来源，约占总排放量的80％。与来自源和过程控制汞排放相比，结束管治疗技术被高效率，其特征在于，与汞的去除速率^p超过90％。在烟气净化过程中，汞只是被分离出来，而有害性仍然存在。经过热处理和等离子方法后，汞可以从吸收剂中解吸出来，从而可以恢复吸附剂的活性。同时，可以通过螯合剂，酸洗和电解将汞纯化为汞，从而实现资源利用。本文还强调了排放控制技术，无害和足智多谋的处理方法的优势和局限性。此外，还提供了一些有关有效处理汞的新思路。