铁碳微电解与过氧乙酸联用处理罗丹明B废水

Combination of iron-carbon micro-electrolysis and peracetic acid for the treatment of Rhodamine B containing wastewater

采用铁碳微电解与过氧乙酸联用的方法处理含罗丹明B(RhB)废水。研究了铁粉投加量、铁碳比、pH、过氧乙酸投加量对处理效果的影响,并确定了最佳反应条件。结果表明,室温下,铁粉投加量为1.8 g/L、m(Fe)∶m(C)为1∶1,初始pH为4、过氧乙酸投加量为0.3 mmol/L为最优反应条件。处理RhB废水40 min后,脱色率可达到92.1%,TOC去除率达到80.6%。与单独的铁碳微电解法相比,去除率明显增加。

The combined method of ironcarbon microelectrolysis and peracetic acid has been used for the treatment of wastewater containing Rhodamine B(RhB).The influences of iron powder dosage,ironcarbon ratio,pH and peracetic acid dosage on the treatment effect have been investigated,and the optimal reaction conditions ascertained.The results show that the optimal conditions are as follows:the dosage of iron powder is 1.8 g/L,mass ratio of Fe and C=1∶1,pH 4,at room temperature,and dosage of peracetic acid(PAA)is 0.3 mmol/L.The decolorization rate can reach 92.1%and the removing rate of TOC can reach 80.6%,after the Rhodamine B wastewater has been treated for 40 min.Compared with the single ironcarbon microelectrolysis method,the removing rate is increased obviously.