微电解-铁碳内电解耦合预处理高浓度染料废水

以实际废水为研究对象，采用微电解-铁碳内电解联合工艺法处理高浓度、高色度和高含盐量高的染料废水，考察了固/液比、铁/碳比、电流密度等因素对色度和化学需氧量（COD）的去除率的影响。结果表明，当反应时间为30 h、固液比（体积比）为1∶20、铁碳比（体积比）为1∶1、电流密度为9.26 mA/cm2时，该组合工艺处理印染废水效果稳定，平均出水色度值为1000 倍，COD去除率达到56.5%。综合处理效果与经济两方面因素，电解-内电解耦合工艺是预处理高浓度燃料废水的有效方法之一。

Study on treatment of high concentration of dye-wastewater with coupling technique of electrochemical oxidation and internal-electrolysis

The wastewater with high concentrations of dyes and salt from dye production process was treated by a new technological process of combining micro-electrolysis and ferric-carbon internal electrolysis. The factors affecting the removal of color and COD from the wastewater were investigated，such as ratio of solid to liquid，ratio of Fe to C，current density. Research on the most influence factors showed that when the ratio of solid to liquid was 1∶20，the volume ratio of iron to carbon was 1∶1 and current density was 9.26 mA/cm2，the process can get an excellent removal rate in the experience. After 30 hours treatment，the average effluence water color reached 1000，and the removal rate of COD was 56.5%. Considering treatment effectiveness and economical cost，micro-electrolysis and ferric-carbon internal electrolysis composited technology could be effective and feasible.