多相催化臭氧氧化法处理印染废水的研究

Research on the heterogeneous catalytic ozonation for the treatment of printing and dyeing wastewater

采用浸渍法制备了活性炭负载铁锰氧化物的催化剂用于对印染废水的多相催化臭氧氧化处理,当铁锰质量比为1∶2时,催化剂处理效果最佳。多相催化臭氧氧化工艺的最佳运行参数为:处理时间60 min、臭氧通气量0.2 L/min、催化剂投加质量20 g、废水pH=5。经多相催化臭氧氧化处理后,印染废水的COD、氨氮、TP、色度去除率分别为81.7%、90.2%、97.6%、99.1%,去除效果较好。

Catalyst with Fe-Mn oxide loaded on activated carbon has been used for treating printing and dyeing wastewater by heterogeneous catalytic ozonation. When mass ratio between Fe and Mn is 1：2, the treatment efficiency of catalyst is the best. Optimal parameters for heterogeneous catalytic ozonation process are as follows ： handling time is 60 min, ozone ventilatory volume 0.2L/min ,dosage of catalyst 20 g and wastewater pH=5. Though heterogeneous catalytic ozonation treatment, the removing rates of COD, ammonia nitrogen, total phosphorus and chroma of printing and dyeing wastewater are 81.7%, 90.2%, 97.6% and 99.1%, respectively. The removing efficiency is pretty good.