多相稀土催化臭氧氧化法降解印染废水

Printing and dyeing wastewater treatment with ozone oxidizing catalyzed by heterogeneous phase rare earth

利用多相稀土催化臭氧氧化法对浓度为200 mg.L-1的1 L模拟印染废水进行了降解实验。以稀土催化剂投加量、温度、反应时间及pH值为影响因素,以COD去除率为考察指标来优化实验参数。结果表明:该工艺的最佳反应条件为pH=2,稀土催化剂投加量为5 g,反应时间为60 min,温度为60℃。该方法应用于废水处理,效果较好。

Degradation of 1 L with concentration of 200 mg·L-1 simulated printing and dyeing wastewater has been done with ozone oxidizing catalyzed by heterogeneous phase rare earth.This experiment was optimized by taking pH value,carrying rare earth catalyst amount,reaction time,temperature as influencing factors and the removal rate of COD as index.The results show the optimal process as follows: pH value is 2,carrying rare earth catalyst amount 5 g,reaction time 60 min,and temperature 60 ℃.