功率超声应用于有机污染物降解的研究概况  

The Research Survey of Organic Contaminants Degradation by Power Ultrasound

作　　者：谢家声[1] 肖士民[1] 曹人平[1] 

机构地区：[1]华南理工大学应用化学系,广州510640

出　　处：《四川环境》2005年第2期35-38,共4页Sichuan Environment

摘　　要：功率超声是一项降解有机污染物的新型技术。本文介绍了功率超声降解有机污染物的原理:声空化理论及功率超声降解过程中导致有机物分解的三个主要机理,即高温热解机理、OH自由基氧化机理以及超临界水氧化机理。并系统地介绍了挥发性及难挥发性有机物应用功率超声降解时,在不同降解机理影响下的处理效果。文章同时介绍了影响超声降解的一些重要的物理、化学因素。最后提到目前超声降解存在的问题和发展前景。Power ultrasound method is a new technique to degrade organic contaminants in water. The paper introduces the principle and the main mechanism of ultrasonic degradation for organic contaminants, such as Cavitation theory(the basic theory), Pyrolysis mechanism, OH radical oxidation mechanism and Supercritical water oxidation mechanism. As the result of different degradation( mechanism,) the treatment effect of volatile and non-volatile organic contaminants with ultrasonic degradation is systematically (introduced). The main physical and chemical factors of influence for ultrasonic degradation are also accounted for. Views of existent problems and (developing) trends are mentioned.

关 键 词：功率超声 有机污染物 降解 

分 类 号：X703[环境科学与工程—环境工程]