超声-高级氧化联用技术在废水处理中的应用研究进展

ADVANCES IN APPLICATION OF ULTRASOUND-ADVANCED OXIDATION COMBINED PROCESSES IN WASTEWATER TREATMENT

高级氧化技术在处理难降解工业废水方面应用广泛,但是每种技术都存在缺陷。学者们将超声与其他高级氧化技术相结合。超声辐射溶液引起空化效应,可对其他过程进行强化,同时也使各自缺陷得到克服,从而产生协同效应,可进一步提高有机污染物的去除效果,故联用技术在废水处理中的应用正受到国内外学者越来越多的关注。介绍了超声-臭氧氧化技术、超声-Fenton试剂氧化技术、超声-光催化氧化技术和超声-电化学氧化技术的基本原理,简要综述了这些联用技术在废水处理中的应用进展,并展望了超声-高级氧化技术的发展前景。

Advanced oxidation processes has been widely used in the treatment of refractory industrial wastewater,but each process has its drawbacks. Ultrasound was combined with other advanced oxidation processes due to the ultrasonic radiation on the solution can cause cavitation effect. Thus,ultrasound technology not only enhanced other processes by its cavitation effect but also overcame their own defects,which resulted in synergistic effect and higher removal rate of organic pollutants,so ultrasonic-advanced oxidation combined processes for the treatment of wastewater have been more and more concerned by the domestic and foreign scholars. In this article,the basic principles of combination of ultrasonic irradiation with several advanced oxidation processes,such as Fenton reagent oxidation,ozone oxidation,photocatalytic oxidation and electrochemical oxidation,were introduced. The progress on the application of these combined processes in wastewater treatment was briefly reviewed,and the development prospects of ultrasonic-advanced oxidation combined processes were discussed.