印染废水光催化降解研究  

Photocatalysis Degradation Study on Dyeing Wastewater

作　　者：张霜华 张桂兰[2] 

机构地区：[1]新疆有色金属研究所,新疆乌鲁木齐830000 [2]新疆大学化学系,新疆乌鲁木齐830046

出　　处：《化工生产与技术》2003年第6期13-15,共3页Chemical Production and Technology

摘　　要：采用石英管式光催化反应器,用紫外灯激发染料污水悬浮液中TiO2产生OH·自由基,将染料催化氧化脱色。探讨了催化剂用量、污水浓度、光照时间、pH值对光解率的影响。实验结果表明,在40W紫外灯的照射下,催化剂的用量为0.6g/L,污水浓度40mg/L,灯照时间210～270min(依染料结构不同而定),污水脱色效率一般在(0.92～0.95)之间。COD去除率88%。Dyes are catalytically and oxygenation decoloried by OH free groups in TiO2 in a photocatalytical reactor,and effects of catalyst amount,wastewater contraction,sunshine time and pH on photolysis are explored. Experiments show that under 40w ultraviolet light,catalyst amount is 0.6 g/L,wastewater contraction is 40 mg/L,light shine time is 210-270 min (depending on the construction of dye construction). Decolor efficiency of wastewater is usually between 0.92-0.95. Removal of COD is 88%.

关 键 词：光催化氧化 染料废水 石英管反应器 污水脱色率 TIO2 光解率 

分 类 号：X791[环境科学与工程—环境工程]