复频超声降解甲基橙废水的实验研究  

Experimental study on the degradation of methyl orange wastewater by multi-frequency ultrasonic

作　　者：闫正[1] 程琛[1] 李文昭[1] 蒋保刚[1] 刘志强[1] 

机构地区：[1]河北大学环境工程研究所,河北保定071000

出　　处：《工业水处理》2013年第3期36-39,共4页Industrial Water Treatment

基　　金：国家自然科学基金--面上项目(51077035)

摘　　要：以甲基橙模拟废水为研究对象,用正交实验考察了影响复频超声降解甲基橙的因素。结果表明,正交因子影响权重:复频超声功率>超声作用时间>甲基橙初始浓度。最佳工艺条件:复频超声功率为150 W,超声作用时间为90 min,甲基橙初始质量浓度为10 mg/L,在此条件下,溶液脱色率为89.6%;当pH=2时,脱色率可达98%;添加CaCl2,脱色率和COD去除率均超过96%。总之,降低pH,提高温度,添加CaCl2均能显著提高复频超声降解甲基橙废水的效果。Taking simulated methyl orange multi-frequency ultrasonic on the degradati wastewater as the research object, the effects of the influencing factors of on of methyl orange are investigated by orthogonal tests. The results show that the influence weights of orthogonal factors are as follows ： the power of multi-frequency ultrasonic〉ultrasonic reaction time〉initial concentration of methyl orange. Under the following optimum process conditions ： multi-frequency ultrasonic power is 150 W,reaction time of multi-frequency ultrasonic 90 min,and initial concentration of methyl orange 10 mg/L,the decolorization rate of the solution is 89.6%. When pH=2 ,the decolorization rate can reach 98%. When CaCl2 is added, both the decolorization rate and COD removing rate of methyl orange are over 96%. In short, the degradation effectiveness of methyl orange wastewater by multi-frequency ultrasonic can significantly be improved by reducing pH, raising temperature and adding CaCl2.

关 键 词：复频超声 甲基橙 脱色率 染料废水 

分 类 号：X703.1[环境科学与工程—环境工程]