过硫酸盐活化高级氧化技术在污水处理中的应用

Research of Activating Persulfate Oxidation Technology in Sewage Disposal

过硫酸盐氧化技术通过作用过程中产生过硫酸根自由基SO4^-·进攻有机污染物,主要用于高浓度、难降解有机污染的处理,是一种新兴的高级氧化技术,其氧化电位（E0=2.5-3.1 V）比广泛研究的强氧化羟基自由基OH^-·（E0=1.8-2.7 V）更强。针对目前常用的光、热、过渡金属3种过硫酸盐活化方式,分析了国内外污水处理特点及其应用进展,并指出未来过硫酸盐活化技术的主要研究方向及其技术改进需求。

Activating persulfate technology, as a new advanced oxidation method for disposing high-concentration and refractory organic pollutants, releases sulfate radical（SO4^-·） to effectively degrade organic pollutants, whose sulfate radical（E0=2.5-3.1 V） is superior to the hydroxide radical OH^-· （E0=1.8-2.7 V）. This study discusses activating persulfate, mainly including thermal persulfate, persulfate combined with transition metal ions, photo-chemical persulfate. Moreover, it analyzes the exiting problems and future developing directions for advanced oxidation technology of activating persulfate.