超声协同H2O2降解模拟废水中苯酚的影响因素试验研究

运用超声、H2O2以及2种技术相结合的超声协同H2O2方法处理苯酚模拟废水,比较3种方法处理效果的差异,并讨论了超声功率、溶液pH值、超声作用时间和亚铁离子（Fe2＋）的量对处理效果的影响。结果表明,超声协同H2O2处理组对模拟废水的处理效率优于超声处理组和H2O2处理组。通过正交实验得出影响苯酚的降解率的大小次序先后为pH值〉超声功率〉超声时间〉加入FeSO4量,在实验参数的基础上,为了获得较高的降解率和节省成本,各因素的优化工艺参数为超声时间60min,功率为200W,pH值为3,加入0.1mmol.L-1FeSO4量为1.0mL。在该最佳条件下试验,苯酚的降解率为81.50%。相对单独超声和单独过氧化氢而言,采用超声协同过氧化氢法对苯酚具有降解率高、节省时间、降解速度快等优点。

Degradation Impact Factors of Phenol Simulated Wastewater with Ultrasonic-hydrogen Peroxide

The use of ultrasonic,H2O2and the combination of two kinds of technology approach to ultrasound H2O2 phenol wastewater,treatment effect of three methods were compared the differences,and discussed the ultrasonic power,the solution pH value,ultrasonic time and ferrous ions（Fe2 ＋） the amount of the treatment effect.The results show that hydrogen peroxide and ultrasonic treatment efficiency of wastewater treatment is superior to ultrasonic treatment group and H2O2 treatment.Through orthogonal experiments of phenol degradation rate of the size of the order has to pHultrasonic powerultrasonic timeadding 0.1mmol·L-1FeSO4 amount of the basis of the experimental parameters,in order to obtain high degradation rate and cost,various factors.Optimization of process parameters for the ultrasonic time of 60 min,power is 200 W,pH is 3,adding FeSO4 amount of 1.0 mL.Under optimum conditions in this experiment,the degradation of phenol was 81.50%.Ultrasonic is relatively separate and separate hydrogen peroxide,the use of ultrasonic hydrogen peroxide degradation rate of phenol,save time,the advantages of speed degradation.