活化过硫酸盐氧化法修复有机污染土壤的研究进展

过硫酸盐在不同活化因子的作用下可产生具有强氧化性的硫酸根自由基（SO₄^-·），能氧化分解众多的有机化合物，同时因其具有的氧化能力强、反应速度快及应用范围广等特点，近年来在环境污染治理领域备受关注。本文在对活化过硫酸盐氧化机理分析的基础上，综述了国内外利用过渡金属离子、氧化剂、热、强碱及联合活化等多种方式活化过硫酸盐修复有机物污染土壤的研究现状，并对活化过硫酸盐修复污染土壤的影响因素如氧化剂的添加量及添加方式、初始pH和反应时间进行了综述。此外，对活化过硫酸盐氧化法与电动修复、微生物修复、表面活性剂洗脱、固化稳定化等技术在土壤修复中的联合应用同样进行了的阐述。最后提出了活化过硫酸盐应用于土壤修复领域存在的问题，并对今后的研究方向进行了展望。

Research progress in remediation of organic contaminated soil by activated persulfate oxidation

As one of the most promising methods in chemical oxidation, activated persulfate oxidation has a fabulous prospect in environmental pollution control due to its characteristics of strong oxidizing ability, fast reaction speed and wide application range. It can be activated by initiators to form sulfate radical, which can degrade many organic contaminations and has a significant effect on the remediation of organic contaminated soil. This paper reviewed the mechanism of persulfate oxidation, and provided an overview on the research progress of the activation methods of persulfate oxidation for the remediation of organic contaminated soil under different conditions including transition metal ions, oxidants, thermal activation and alkali activation. It also reviewed the influencing factors of activated persulfate oxidation such as persulfate concentration, pH, reaction time and adding method of persulfate. Moreover, the application of activated persulfate oxidation combined with other technologies in soil remediation was expounded. Finally, the existing limit and prospects of activated persulfate oxidation technology for soil remediation were prospected.