Fenton氧化工艺在处理炼化废水中苯酚的应用研究

摘要

通过正交实验和单因素实验探索了Fenton氧化炼化废水中苯酚的最佳工艺条件。实验结果表明，Fenton试剂处理苯酚废水时，各影响因素的作用大小顺序是：pH＞反应温度＞H2O2投加量＞反应时间＞FeSO4·7H2O投加量；最佳氧化反应条件为：pH＝3．5，反应温度为20℃，H2O2投加量为12 mL·L－1，反应时间为30min，FeSO4·7H2O投加量为450 mg·L－1，此时废水中苯酚的去除率为89．26％，残余苯酚含量为11．76 mg·L－1。因此，用Fenton氧化法处理含苯酚废水是一种非常有效的方法。%Removal of phenol in petroleum refining industry wastewater by Fenton reagent oxidation was examined. The optimal operating conditions were determined by orthogonal experiments and single factor experiments.The ex-periment results indicated that the order of effects was pH>reaction temperature>H2 O2 dosage >reaction time>FeSO4 7H2O dosage.After 30min,the removal rate of phenol in petroleum refining industry wastewater reaches 89.26% and the residual phenol in wastewater is 11.76 mg·L-1 when pH value is 3.5,temperature is 20 ℃, H2 O2 and FeSO4 dosage is 12 mL·L-1 and 450mg/L,respectively.So it is a very effective way to treat petroleum refining industry wastewater containing phenol using Fenton method.