超声-光催化降解有机污染物的研究进展

Sono-photocatalytic Degradation of Organic Pollutants in Wastewater

超声-光催化联合技术是近年来废水处理的新型高级氧化技术。该技术主要利用超声波和光催化降解联合产生的协同效应来提高有机污染物的降解效率。本文主要就目前国内外超声-光催化降解有机物的降解机理、影响因素(光催化剂的性能及投加量、超声频率、超声强度及声功率、pH、温度、离子强度、污染物的浓度、溶解气体和其它添加物)以及在废水处理方面的应用等方面进行了综述,并介绍了超声-光催化技术存在的主要问题,最后展望了该技术的发展前景。

Sono-photocatalytic degradation of organic pollutants is a newly developed advanced oxidation process（AOP）.The degradation efficiency of organic pollutants is improved by the synergetic efficiency generated by the combination of ultrasonic cavitation and photocatalysis.In this paper,sono-photocatalytic degradation mechanism,influence factors（the performance and concentration of photocatalyst,ultrasonic frequency and intensity,pH,temperature,ionic strength,initial concentration of organic pollutants,dissolved gas and other additives） and application in wastewater treatment were discussed.