超声辐射法降解废水中的二甲苯、苯酚和丙烯腈

Degradation of Xylene,Phenol and Acrylonitrile in Wastewater by Ultrasonic Radiation Process

采用频率为20kHz的超声波处理二甲苯、丙稀腈、苯酚溶液。实验结果表明,在二甲苯初始质量浓度为27.6mg/L、H2O2质量浓度为1.68g/L、溶液温度为25℃、声强为141.32W/cm2、辐射全程时间为60min的条件下,二甲苯降解率可达99.20%;在丙烯腈初始质量浓度为100.0mg/L、通氧量为15mL/min、溶液温度为28℃、声强为141.32W/cm2、辐射全程时间为30min的条件下,丙烯腈降解率可达98.20%;在苯酚初始质量浓度为20.0mg/L、H2O2质量浓度为1.50g/L、FeSO4质量浓度为0.22g/L、溶液温度为28℃、声强为48.92W/cm2、辐射全程时间为40min的条件下,苯酚降解率可达99.81%。

The solution containing xylene, acrylonitrile and phenol was treated using ultrasonic wave with 20 kHz of frequency. The results indicate that： Under the conditions of initial xylene mass concentration 27.6 mg/L, H2O2 mass concentration 1.68 g/L, the solution temperature 25 ℃ the ultrasonic intensity 141.32 W/cm^2 and the entire radiation time 60 min, the degradation rate of xylene can reach 99.20% ; Under the conditions of initial acrylonitrile mass concentration 100.0 mg/L, O2 flow 15 mL/min, the solution temperature 28℃, the ultrasonic intensity 141.32 W/cm^2 and the entire radiation time 30 min, the degradation rate of acrylonitrile can reach 98.20% ; Under the conditions of initial phenol mass concentration 20.0 mg/L, H2O2 mass concentration 1. 50 g/L, FeSO4 mass concentration 0.22 g/L, the solution temperature 28 ℃, the ultrasonic intensity 48.92 W/cm2 and the entire radiation time 40 min, the degradation rate of phenol can reach 99.81%.