高级芬顿反应处理染料废水的影响因素及工艺条件优化

通过实验分析高级芬顿体系处理染料废水的影响因素,并获得优化的工艺条件.结果表明各种因素对评价指标的影响顺序不同,但过氧化氢的影响始终是最大的.对COD去除的优化工艺为：H2O2浓度为300 mg/L,Fe^2＋浓度20 mg/L,H2C2O4浓度为15 mg/L,pH为3.0,时间为40 min.对TOC去除的优化工艺为：H2O2浓度为300 mg/L,Fe^2＋浓度20 mg/L,H2C2O4浓度为20 mg/L,pH为3.0,时间为60 min.在优化的工艺条件下能有效的降解3种染料,降解速率顺序为GR＞X3-B＞KN-R.处理后的废水COD去除率可达到80%,TOC去除率达到70%.

Influencing factors for treatment of dyeing waste by advanced Fenton reaction andoptimum technology conditions

This paper reports the investigation on the factors effecting the treatment of dyeing waste by using the advanced Fenton reaction.Experiments reveal that H_2O_2 is the most important factor effects the results,in comparison with that of all others.The optimal condition for COD removal is: concentration of H_2O_2,300 mg/L;Fe~(2+),15 mg/L;H_2C_2O_4,15 mg/L;pH,3.0;reaction time,40min.That for TOC removal is: concentration of H_2O_2,300 mg/L;Fe~(2+),20 mg/L;H_2C_2O_4,20 mg/L;pH,3.0;reaction time,60min.The degradation rates for different dyes are in the order of GR>(X3-B)>KN-R,under the optimized technology conditions.The removal rates of COD and TOC in the treated dyeing waste are more than 80% and 70% respectively.