UV-Fenton工艺的研究进展及其在水环境微污染处理领域的应用  

Research Progress in UV-Fenton Process and the Application of Micropollution Control in Water Environment

作　　者：Sadou BARRY 汪永 郭佳琦 徐清山 章凯 李聪[1] 张云澍 Sadou BARRY;WANG Yong;GUO Jiaqi;XU Qingshan;ZHANG Kai;LI Cong;ZHANG Yunshu(School of Environment and Architecture,University of Shanghai for Science and Technology,Shanghai 200093,China)

机构地区：[1]上海理工大学环境与建筑学院,上海200093

出　　处：《净水技术》2023年第5期21-28,43,共9页Water Purification Technology

基　　金：国家自然科学基金(51778565);上海市自然基金(20ZR1438200)。

摘　　要：近年来,水环境中的新型难降解污染物受到广泛关注,催生了该领域大量降解、还原及吸附等处理技术的相关研究,尤其是基于强氧化性自由基的高级氧化法(AOPs),典型工艺就是Fenton法。但在传统Fenton氧化体系中,H_(2)O_(2)的利用效率较低,铁泥产量高,且pH限制范围较窄,影响了Fenton反应的整体降解效果及应用。因此,引入了紫外光以提高H_(2)O_(2)的分解效率,即UV-Fenton体系,较传统Fenton可以有效减少Fe^(2+)用量,促进Fe^(3+)向Fe^(2+)的转化,加速H_(2)O_(2)分解,并提高H_(2)O_(2)利用率,进而使有机物矿化更彻底。文章详细对比了传统Fenton与UV-Fenton工艺,介绍UV-Fenton工艺的反应原理,并讨论其影响因素(例如光照强度、Fe^(2+)和H_(2)O_(2)用量等),同时,文章总结了UV-Fenton工艺在水环境领域及微污染处理中的实际应用,包括有机染料、抗生素、农药及全氟化合物等。最后对UV-Fenton工艺的研究改进方向以及实际应用存在问题提出了展望。In recent years,new types of refractory pollutants in the water environment have received much attention.This has prompted a large amount of research related to degradation,reduction and adsorption treatment technologies in this field,especially advanced oxidation methods(AOPs)based on strong oxidizing radicals,of which a typical process is the Fenton method.However,in the traditional Fenton oxidation system,the utilization efficiency of H2O2 is low,the yield of iron sludge is high,and the applicable pH range is narrow.This affects the overall degradation effect and application of the Fenton reaction.The UV-Fenton process with the introduction of ultraviolet light can effectively reduce the amount of Fe^(2+),promote the conversion of Fe^(3+)to Fe^(2+),accelerate the decomposition of H_(2)O_(2),and improve the utilization of H_(2)O_(2),which in turn leads to a more complete mineralization of organic matter than the conventional Fenton process.This paper compares the conventional Fenton and UV-Fenton processes in detail,introduces the reaction principle of UV-Fenton process,and discusses its influencing factors(for example,light intensity,Fe^(2+)and H_(2)O_(2) dosage).Furthermore,it summarizes the applications of UV-Fenton process to control micropollution in water environments,including organic dyes,antibiotics,pesticides,and perfluorinated compounds.Finally,we foresee the direction of UV-Fenton research and the problems of practical application.

关 键 词：紫外-芬顿(UV-Fenton) 高级氧化工艺 羟基自由基 影响因素 应用 

分 类 号：TQ09[化学工程] X703[环境科学与工程—环境工程]