摘要
超声通过提高臭氧的分解速率、传质速率以及产生更多具有活性的自由基来强化臭氧的氧化能力,提高污染物的降解速率。利用超声与臭氧结合处理含氮染料废水以及水中难降解有机物如硝基芳香烃非常有效。处理过程中,臭氧投加量、超声的声能密度和环境的pH是主要的影响因素。
The oxidation capacity of ozone is improved and the degradation rate of pollutants is increased by ultrasonic irradiation. The ozone decomposition rate as well as mass transfer rate could be enhanced and results in the augmentation of the active free radicals. The ozone combined with ultrasonic irradiation is the efficient means of degrading azo dyes in waste water and refractory organics such as nitroaromatics in water. In the process of water treatment, the major influencing factors are ozone dose, ultrasonic density and pH.
出处
《净水技术》
CAS
2008年第3期1-4,共4页
Water Purification Technology
基金
国家"863"高技术研究发展计划资助项目(2004AA649410
2002AA601130)
国家技术攻关计划重大资助项目(2003BA808A17)
关键词
超声
臭氧
反应机理
水处理
ultrasound ozone reaction mechanism water treatment
