石英砂负载TiO_2薄膜光催化降解制革废水的实验研究  

Research on treating tannery wastewater by using supported catalysts nanometer-sized TiO_2on quartz sand

作　　者：宋立民[1] 许佩瑶[1] 吴扬[1] 康玺[1] 

机构地区：[1]华北电力大学环境科学与工程学院,河北保定071003

出　　处：《华北电力大学学报（自然科学版）》2007年第1期141-144,共4页Journal of North China Electric Power University：Natural Science Edition

摘　　要：采用液相沉积法制备石英砂负载纳米TiO2薄膜,将该膜作为光催化剂降解实际制革废水。通过平行实验确定了最佳反应条件为光照时间15 min,废水初始pH=6.7,H2O2投加量为0.5%。在此条件下,进行了模拟实验,结果表明光照30 min时CODcr去除率即达到71.91%。此外,制备了Ag+/TiO2改性薄膜,该膜对制革废水的光降解效果有一定的提高。Nanometer-sized TiO2 thin films were prepared by liquld phase deposition processing, Photocatalytic degradation of tannery wastewater has been studied by using the Ti O2 films as photocatalyst. In the parallel experiment, the bestcondition is that the fimeof light-catalysed is 15min,initial pH is 6.7 and the volume of H2O2 is 0.5%. Then, we carried on the simulation experiment under this condition and found that the removal rate of CODcτ, reached 71.91% after 30mins of irradiation. Besides, the effect of degradation of tannery wastewater improved by using the Ag^＋/TiO2 thin films.

关 键 词：TIO2薄膜 液相沉积 光降解 制革废水 

分 类 号：X703.1[环境科学与工程—环境工程]