State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China.
State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China; Key Laboratory for City Cluster Environmental Safety and Green Development of the Ministry of Education, Institute of Environmental and Ecological Engineering, Guangdong University of Technology, Guangzhou 510006, China; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458, China.
Sci Total Environ. 2021 Apr 15;765:142762. doi: 10.1016/j.scitotenv.2020.142762. Epub 2020 Oct 5.
Based on previous reports, UV/sulfite process is generally used as an advanced reduction process (ARP) since e and/or ∙H, both with strong reduction potential, could be substantially generated herein. Very recently, the combination of UV and sulfite as an advanced oxidation process (AOP) or an oxidation-reduction coupling process has attracted increasing interest due to the yield of SO and/or HO∙. Herein, the application of UV/sulfite as an ARP and AOP (or oxidation-reduction coupling process) during water and wastewater treatments is reviewed respectively. (1) In the absence of O, UV/sulfite works as an ARP. The generation mechanism of reactive reduction species and various contaminants removal (including degradation kinetics and efficiency, decomposition mechanisms, effects of some factors, etc.) is summarized in detail and systematically. Moreover, both the application of different types of UV lights and the economic evaluation are summarized systematically. (2) In the presence of O, UV/sulfite could be used as an AOP or oxidation-reduction coupling process. The generation mechanism of reactive oxidation species and influencing factors is also presented in detail. Moreover, two ways (including homogeneous and heterogeneous activation) used to enhance the UV/sulfite oxidation potential are summarized respectively. Moreover, several knowledge gaps and research needs for further research are proposed. Overall, this review provides an overview for in-depth understanding of UV/sulfite as an ARP or AOP (oxidation-reduction coupling process) during water and wastewater treatments.
基于先前的报道，UV/亚硫酸盐工艺通常被用作一种高级还原过程（ARP），因为在此过程中可以大量生成具有强还原电位的 e 和/或 ∙H。最近，由于 SO 和/或 HO∙的产量，UV 和亚硫酸盐的组合作为一种高级氧化过程（AOP）或氧化还原偶联过程已经引起了越来越多的关注。本文分别综述了 UV/亚硫酸盐在水和废水处理中的 ARP 和 AOP（或氧化还原偶联过程）的应用。（1）在没有 O 的情况下，UV/亚硫酸盐作为 ARP 起作用。详细系统地总结了活性还原物种的生成机制和各种污染物的去除（包括降解动力学和效率、分解机制、一些因素的影响等）。此外，还系统地总结了不同类型的紫外灯的应用和经济评价。（2）在有 O 的情况下，UV/亚硫酸盐可用于 AOP 或氧化还原偶联过程。详细介绍了活性氧化物种的生成机制和影响因素。此外，还分别总结了两种增强 UV/亚硫酸盐氧化势的方法（包括均相和多相活化）。此外，还提出了进一步研究的几个知识空白和研究需求。总的来说，本文综述为深入了解 UV/亚硫酸盐作为水和废水处理中的 ARP 或 AOP（氧化还原偶联过程）提供了全面的概述。
