【摘 要】
：
雾霆天气是一种大气污染状态，是对大气中各种悬浮颗粒物含量超标的笼统表述。本文通过对雾霾气溶胶形成及其化学组成的分析后,采用液氨作为聚沉剂,建立了该聚沉过程的数学模型
【机 构】
：
福建师范大学化学与化工学院,福建福州350007福建洋屿环保科技股份有限公司,福建泉港362100
【出 处】
：
第二十届SO2、NOX、PM2.5、Hg污染控制技术研讨会
论文部分内容阅读
雾霆天气是一种大气污染状态，是对大气中各种悬浮颗粒物含量超标的笼统表述。本文通过对雾霾气溶胶形成及其化学组成的分析后,采用液氨作为聚沉剂,建立了该聚沉过程的数学模型.首先利用气溶胶对氨气的吸附,进一步与气溶胶中的无机酸反应生成盐,结合盐强电解质对气溶胶聚沉作用的原理及其气溶胶布朗运动规律,从而相互碰并;其次,氨与水作用生成一水合氨,其电离产物OH-能有效改变气溶胶表面带电性质,从而使气溶胶产生碰并;再者,氨气分子是一极性分子,可与气溶胶表面的水分子等物质形成氢键作用力,使雾霾气溶胶产生聚集,形成沉降物,地表每m2仅有12g,因此该沉降物仅仅是一点有益的土壤改良剂。
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