紫外耦合高级氧化工艺处理有机废水回用水的机理和研究进展

Research Progress and Mechanism of UV-Coupled AOPs for Reclaimed Water Treatment of Organic Wastewater

回用水水量大且水质稳定,在保护有限淡水资源的同时可以满足不断增长的用水需求。紫外耦合高级氧化工艺通过直接光解和产生自由基间接氧化两条路径,可以将有机废水尾水中传统氧化技术无法降解的有毒有害污染物彻底矿化,具有高效快速、反应条件温和、操作简便等优点,在有机废水回用领域具有巨大的发展潜能。文中综述了传统的回用水氧化技术和紫外耦合高级氧化工艺的氧化机理和研究进展,并提出了未来紫外和高级氧化联用工艺在处理回用水领域的研究方向和需要解决的问题。

Reclaimed water is of high quantity and stable quality,which can not only protect limited fresh water resources,but also meet increasing water demand.Direct photolysis and indirect oxidation by the presence of free radicals are two pathways in UV-coupled advanced oxidation processes(AOPs),it can completely mineralize toxic and harmful pollutants in tail water of organic wastewater which can not be degraded by traditional oxidation technology.It has advantages of fast and efficient,mild reaction conditions and simple operation,etc..Therefore,UV-coupled AOPs has great development potential in the field of organic wastewater reuse.In this paper,oxidation mechanism and research progress of traditional reclaimed water oxidation technology as well as UV-coupled AOPs are reviewed,and research direction along with problems to be solved in the field of treatment of reclaimed water by UV combination processes in the future are put forward.