三相流化床光催化反应器降解水中酸性大红  

Degradation of acid bright red dye wastewater by photocatalysis in three-phase fluidized bed

作　　者：宋卫坤[1] 林雨[1] 刘亮[1] 王小华[1] 

机构地区：[1]武汉科技大学资源与环境工程学院,武汉430081

出　　处：《环境工程学报》2007年第9期58-62,共5页Chinese Journal of Environmental Engineering

基　　金：湖北省耐火材料与高温陶瓷重点实验室-省部共建国家重点实验室培育基地开放基金资助项目(G0607)

摘　　要：以钛酸铋纳米粉体为光催化剂,采用三相内循环流化床光催化反应器对酸性大红染料废水进行了处理,研究了制备钛酸铋时铋与钛物质的量比n(Bi)∶n(Ti)、光催化剂投加量以及废水的pH值对酸性大红去除率的影响。结果表明,n(Bi)∶n(Ti)=12∶1,废水的pH=3,催化剂投加量为0.10 g/L,流量为10 L/h时,连续运行3 h后,酸性大红的去除率可达92.0%。处理水量增大时,经过两级处理,酸性大红染料的总去除率仍可达到94.4%。Acid bright red dye model wastewater were treated with bismuth titanate nano-particles photocatalyst in three-phase internal circulating fluidized bed（TICFB）. The influences of bismuth titanate with different synthesizing rates of n （Bi） ： n （ Ti）, catalyst dosage, and different pH of wastewater were studied. The result shows that when n（Bi） ： n（Ti） = 12： 1, wastewater pH is 3, catalyst dosage is 0.10 g/L and the flux is 10 L/h, the degradation rate of acid bright red dye is up to 92.0% after 3 hours,and treating more flux of water with two stadges,the degradation rate of acid bright red dye is up to 94.4%.

关 键 词：三相流化床 光催化 降解 光催化剂 酸性大红 

分 类 号：X788[环境科学与工程—环境工程]