摘要
【目的】由于抗生素的大量使用,水环境中抗生素抗性基因(ARGs)被频繁检出,由此带来的水质健康风险也引起越来越多关注。传统污水处理工艺无法有效去除这些污染物,因此,UV(紫外)-AOPs(高级氧化工艺)成为研究热点,尤其是其在削减水环境中ARGs方面的潜力。【方法】文章综述了UV与过氧化氢(H_(2)O_(2))、过硫酸盐(PS)、氯(Cl_(2))、芬顿(Fenton)试剂和二氧化钛(TiO2)等工艺的组合,不同程度上实现了ARGs的有效去除,重点分析了其工作原理、削减机制以及削减效果,并进一步探讨了不同的UV-AOPs工艺如何通过产生高活性氧自由基[如羟基自由基(·OH)、硫酸根自由基(SO_(4)^(·-))]和含氯活性物种,破坏细胞表面和脱氧核糖核酸(DNA)结构,从而达到灭活细菌和消除ARGs的目的。【结果】其中,UV/H_(2)O_(2)工艺利用·OH降解ARGs,UV/PS展现了更广的pH适用范围,UV/Cl_(2)通过光解Cl_(2)生成活性物质增强了ARGs去除效果,UV/Fenton反应生成大量·OH,具有较高的去除效率,而UV/TiO2则通过光催化产生活性氧抑制ARGs的传播。通过对不同水环境中的应用效果进行对比,文章探讨了这些工艺的优劣以及其在实际应用中的可行性。结果显示,尽管UV-AOPs在削减水环境中ARGs方面显示出显著效果,但不同工艺的降解效率受水质条件、氧化剂投加量以及工艺配置等多种因素的影响。【结论】总体而言,UV-AOPs是一种具有广泛应用前景的水处理技术,为ARGs的削减提供了有效手段。然而,在其实际应用过程中,需进一步研究不同工艺的联合效应以及如何优化各类参数以提升处理效率,并确保其在多变的水环境中具有稳定的性能,同时减少潜在的二次污染,以期为水环境保护和公共健康安全提供技术参考。
[Objective]With the extensive use of antibiotics,antibiotic resistance genes(ARGs)are frequently detected in water environments,and the associated health risks of water quality have attracted increasing attention.Traditional wastewater treatment processes are ineffective in removing these contaminants,making ultraviolet(UV)-advanced oxidation processes(AOPs)a research hotspot,particularly regarding their potential to reduce ARGs in water environments.[Methods]This paper reviews the combinations of UV with hydrogen peroxide(H_(2)O_(2)),persulfate(PS),chlorine(Cl_(2)),Fenton reagent,and titanium dioxide(TiO2),which have achieved effectively removal of ARGs to various degrees.It focuses on analyzing their working principles,reduction mechanisms,and reduction effects,and further discusses how different UV-AOPs processes generate highly reactive oxygen species[such as hydroxyl radicals(·OH),sulfate radicals(SO_(4)^(·-))]to disrupt cell surfaces and deoxyribonucleic acid(DNA)structures,thereby inactivating bacteria and eliminating ARGs.[Results]Among them,the UV/H_(2)O_(2)process utilizes hydroxyl radicals(·OH)to degrade ARGs,UV/PS exhibits a broader pH range of applicability,UV/Cl_(2)enhances ARGs removal through the photolysis of Cl_(2)to generate reactive species,UV/Fenton reactions generate a large amount of·OH with high removal efficiency,and UV/TiO2 inhibits the spread of ARGs through photocatalytic production of reactive oxygen species.By comparing the application effects in different water environments,the article explores the advantages and disadvantages of these processes and their feasibility in practical applications.The results show that although UV-AOPs demonstrate significant effects in reducing ARGs in water environments,the degradation efficiency of different processes is influenced by various factors such as water quality conditions,oxidant dosages,and process configuration.[Conclusion]Overall,UV-AOPs represent a promising water treatment technology that provides an effective mean for reducing ARGs.However,in practical applications,further research is needed on the synergistic effects of different processes and how to optimize various parameters to improve treatment efficiency and ensure stable performance in variable water environments,while minimizing potential secondary pollution.This aims to provide technical references for water environment protection and public health safety.
作者
姜德坤
何桂琳
张琳静
刘宝震
杜振齐
王永磊
JIANG Dekun;HE Guilin;ZHANG Linjing;LIU Baozhen;DU Zhenqi;WANG Yonglei(School of Municipal and Environmental Engineering,Shandong Jianzhu University,Jinan 250101,China;Jinan Water Conservancy Service Center Xiaoqinghe Service Department,Jinan,250000,China)
出处
《净水技术》
2025年第7期1-12,100,共13页
Water Purification Technology
基金
山东省重点研发计划(2023TZXD019)
国家重点研发计划(2022YFC3203705、2022YFC3203704)。
