Fe^(2+)/NaClO处理间甲酚废水的研究

Study on Fe^(2+)/NaClO Reagent Terating Cresol Waste Water

探讨了利用NaClO在酸性条件下生成的HClO代替Fenton试剂中的氧化剂H2O2,与Fe2+作用对间甲酚模拟废水进行氧化处理,结果表明:用HClO代替H2O2处理间甲酚模拟废水能够取得更好的处理效果,当FeSO4·7H2O和NaClO的用量分别为3g/L及8mL/L时,在pH为2,振荡氧化反应30min的条件下,对浓度不大于50mg/L的间甲酚的去除率大于99%,废水中剩余间甲酚的浓度小于0.5mg/L,达到了我国废水综合排放的三级标准。

In this study we use NaClO to produce HClO in the acidic solution for replacing H2O2 in the fenton reagent to treat cresol waste water. The results show that we can treat cresol waste water also effectively. At the same time, the best reaction conditions are settled as follows： the concentration of FeSO4· 7H2O is about 3 g/L, the quantity of the NaClO is about 8 mL/L, the concentration of the cresol is less than 50 mg/L. The pH is around 2, and after 30 min,the removal ratio of cresol is 99% ,the content of remaining cresol is smaller than 0.5 mg/L in the waste water. It has reached the third class standard of our country for discharges on waste water.