过硫酸盐活化方法的研究进展

Research progress on persulfate activation method

随着环境污染日益严重,各种形式的高级氧化技术逐渐发展起来。其中活化过硫酸盐高级氧化技术由于原料易得,效果显著等优点颇受人们关注。过硫酸盐活化主要产生硫酸根自由基和羟基自由基两种高活性自由基,能够有效去除难降解有机污染物。阐述了过硫酸盐活化体系中两种主要活性自由基的特点及其与有机物的反应机理;综述了活化过硫酸盐的不同方式,做了各种活化方法的技术经济优劣性分析,并对存在问题进行了分析和展望。

With the increasing environmental pollution,various forms of advanced oxidation technology have gradua-lly developed.The activated persulfate advanced oxidation technology has attracted much attention because of its easy availability of raw materials and remarkable effects.Persulfate activation mainly produces two high-activity free radi-cals,sulfate radical and hydroxyl radical,which can effectively remove refractory organic pollutants.The paper des-cribes the characteristics of two main active free radicals in the persulfate activation system and its reaction mechani-sm with organic matter.The different ways of activating persulfate are reviewed,and the technical and economic adv-antages and disadvantages of various activation methods are analyzed.Furthermore,the existing problems are analy-zed and forecasted.