Time difference based measurement of ultrasonic cavitations in wastewater treatment  

作　　者：朱昌平 Wang Bin Liu Changwei Gong Runhang Liu Jing Ren Qinggong Han Qingbang Huang Bo Shan Minglei Tang Yibin Ni Caihua 

机构地区：[1]Jiangsu Key Laboratory of Power Transmission and Distribution Equipment Technology, Changzhou Key Laboratory of Sensor Networks and Environmental Sensing, Hohai University, Changzhou 213022, P. R. China [2]School of Petrochemical Engineering, Changzhou University, Changzhou 213164, P. R. China [3]School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, P. R. China

出　　处：《High Technology Letters》2016年第1期63-66,共4页高技术通讯（英文版）

基　　金：Supported by the National Natural Science Foundation of China(No.11274092,11274091,11304026);the Fundamental Research Funds for the Central Universities(No.14B10128)

摘　　要：Intensity of cavitation is significant in ultrasonic wastewater treatment,but is complicated to measure.A time difference based method of ultrasonic cavitation measurement is proposed.The time differences at different powers of 495 kHz ultrasonic are measured in experiment in comparison with conductimetric method.Simulation results show that time difference and electrical conductivity are both approximately positive proportional to the ultrasonic power.The degradation of PNP solution verifies the availability in wastewater treatment by using ultrasonic.Intensity of cavitation is significant in ultrasonic wastewater treatment, but is complicated to measure.A time difference based method of ultrasonic cavitation measurement is proposed.The time differences at different powers of 495kHz ultrasonic are measured in experiment in comparison with conductimetric method.Simulation results show that time difference and electrical conductivity are both approximately positive proportional to the ultrasonic power.The degradation of PNP solution verifies the availability in wastewater treatment by using ultrasonic.

关 键 词：cavitation intensity sound velocity time difference wastewater treatment 

分 类 号：X703[环境科学与工程—环境工程] P228.4[天文地球—大地测量学与测量工程]