雾霾的成因及治理技术浅析

摘要

Coal-ifred industry generates a lot of soot in the course of production, but a key link is imperfect in dust re-moving and desulfurization and denitration system adopted by the industry at the present time, namely no any control measure is adopted behind the desulfurization tower, causing the generation of excessive SO3 in the course of denitration and direct emission of ifne particulates in the course of desulfurization, and causing second pol ution. It is an important reason in the formation of fog and mist. WEV technology integrates dust removing with gas wash, ifne particulates and SO3 can be removed in the same course, and insures the gas clean emission. It is one of the efifcient methods in the treatment of fog and mist in economy and technology.%燃煤工业生产过程会产生大量烟尘，但目前该行业普遍采用的除尘和脱硫脱硝系统中却缺失一个关键环节，即在脱硫塔后没有采取任何控制措施，造成脱硝过程产生的过量SO3和脱硫过程产生的微细颗粒直接排放并形成二次污染，是雾霾形成的重要原因。WEV技术集除尘与气体洗涤为一体，在同一过程中可除去细微颗粒及气体中的SO3，确保排放气体干净，在经济上和技术上，都是治理雾霾的有效方法之一。