微电解-Fenton氧化联合处理印染废水系统工艺的研究

Studying on treatment of dyeing wastewater by combined process using micro-electrolysis and fenton oxidation

采用铁碳微电解和Fenton法联合工艺处理实际印染废水,研究pH、反应时间、Fe/C体积比、H2O2浓度对实际印染废水脱色率及COD去除率的影响规律,并优化了联合技术的最佳工艺条件.试验结果表明:在短期时间内,Fe/C体积比和H2O2浓度对废水的处理效果影响最显著,最佳工艺条件为进水pH=4,Fe/C体积比为1∶1,H2O2的投加量20ml/L,反应时间30min,COD的去除率可以达到97%以上,色度的去除率达到99%以上.

The ferric-carbon electrolysis and Fenton oxidation combined process was used to treat the dyes wastewater and the effects of pH,reaction time,the volume ration of ferric to carbon,dosages of H2O2 on decolouration efficiency and COD removal efficiency of the actual dyes wastewater were studied and optimize the optimum conditions of the combined process.The results showed that the combined process could remove the color and COD of this dye wastewater effectively with color and COD removals of 99% and 97% respectively when pH=4,reaction time was 30 min,the volume ration of ferric to carbon=1∶1,and the dosages of H2O2 were 20 ml/L and the most significant impact was the volume ration of ferric to carbon and H2O2 concentration in a short time.