微电解—双氧水处理模拟染料废水的实验研究

Study on Treatment Process by Fe-C Micro-electrolysis and H_2O_2 Oxidation Process for Simulated Printing and Dyeing Wastewater

研究了铁炭微电解一双氧水氧化工艺处理模拟染料废水的效果。结果表明,对于色度为1 000倍,COD为40mg·L^(-1)的次甲基蓝模拟废水,在铁炭比1.5:1、反应时间1 h、pH值2.0的条件下处理,色度去除率达到94.7%,COD增长到734.4 mg·L^(-1)。双氧水与Fe^(2+)摩尔比10:1,pH值2～5,反应50min的条件下处理后,COD去除率达到93.1%,色度去除率达到62.5%。经两步处理后,色度降低为3倍,COD为51.2mg·L^(-1)。同时对反应机理进行了探讨。

The combined techniques of ferric-carbon micro-electrolysis and H202 Oxidation fortreating simulated printing and dyeing wastewater are studied. Results show that when the COD in influent is 40mg·L^-1 and the color ratio is 1 000, the reaction time for the micro-electrolysis is approximately 60 minutes, the iron to carbon ratio is 1.5 ： 1, and pH is 2.0, COD reaches 734.4mg·L^-1%, and the removal rate of color ratio is above 94.7 %. Fe^2 ＋ to H2O2ratio is 10： 1, pH is 2.0 to 5.0, and the reaction time is 50 minutes, the removal rate of COD is 93.1% and the removal rate of color ratio is 62.5 %. After the process of two steps, the color ratio is reduced to 3, and COD is reduced to 51.2mg·L^-1. Meanwhile, the article discusses the mechanism of this experimental.