摘要
超声技术作为一种新型的氧化方法,能提高难降解有机物的降解率和增强水处理中的生物活性,在废水处理中已经发挥了一定的作用并具有广阔的发展前景。光催化氧化降解水体中有机污染物也是近年来兴起的一项急剧发展前景的新型水处理技术,能有效降解废水中的难降解有机物。但因其对光源要求较高等原因限制了它的使用。文章介绍了用超声代替紫外光源降解印染业污水的方法,探讨了降解机理,综述了其在废水处理中的研究进展,并指出今后须解决的问题和发展方向。
Ultrasonic technology has played a great role, and will find a promising future in the area of wastewater treatment as one of the advanced oxidation methods owing to increasing degradation of nondegradable organic pollutants and enhancing biology activity wastewater treatment. As a new technology of organic pollutant degradation, the photocalalytic method, which effectively decomposes nondegradahle pollutants; is becoming increasingly important in wastewater treatment. However ,this means can＇t be used unless there is UV lamp .this paper introdues the new method, in which UV light is be replaced by ultrasound .The mechanism of degradation is investigated, and recent advances in the dye wastewater treatment using this integrated method reviewed. Finally, key question need to solute and development orientation for the future in application of TiO2 degradation catalyzed by ultrasound technology in wastewater treatment, was point out in this paper.
基金
国家自然科学基金(10471061
10074042)
关键词
超声
光催化
降解
有机物
ultrasonic technology
photocalalytic method
degradation
organics
