超声波对臭氧消毒过程中传质效率影响研究  

IMPACTS OF ULTRASOUND ON MASS TRANSFER DURING OZONE DISINFECTION PROCESS

作　　者：赵媛[1] 李子富[1] 张扬[1] 靳昕[1] 

机构地区：[1]北京科技大学土木与环境工程学院,北京100083

出　　处：《水处理技术》2012年第12期108-110,114,共4页Technology of Water Treatment

基　　金：国家自然科学基金项目(50978027)

摘　　要：为改善污水臭氧消毒过程中臭氧传质效率低的缺点,采用超声波来提高液相中臭氧浓度及其传质效率。通过改变超声波辐射时间、功率和频率3个参数,考察其对臭氧浓度及传质效率的影响。结果表明,当超声波辐射75 s时,臭氧传质系数最大;超声波功率由0增加到110 W时,液相臭氧浓度和传质系数随功率升高而增大,当达到110W时,不再增长;传质系数和液相臭氧浓度随频率的增长而增大。In order to improve the shortcomings of low ozone mass transfer efficiency during sewage ozone disinfection process, ultrasound was used to increase the concentration ofozone in the liquid phase and the mass transfer efficiency. The effects ofultmsound radiation time, ultrasound power and frequency were observed to study its effect on ozone concentration and mass transfer efficiency. The results showed that the highest mass transfer coefficient of ozone was reached at 75 s. While, within 0 to 110 W the ozone concentration and the mass transfer coefficient increased with the ultrasonic power increasing. However, when the power reached 110 W, the ozone concentration and the mass transfer coefficient were not growing any more. And the ozone concentration and the mass transfer coefficient were increasing with the adding of frequency.

关 键 词：超声波 臭氧 传质 消毒 

分 类 号：TQ085.4[化学工程] X799.3[环境科学与工程—环境工程]