印染废水的多元多相光催化降解  

Multielement and multiphase photocatalytic oxidation degradation of dyeing wastewater

作　　者：刘智武[1] 胡斯翰 蒙媛[1] 李丽琴[1] 

机构地区：[1]金华职业技术学院,浙江金华321000 [2]浙江省环境工程有限公司,浙江杭州310012

出　　处：《印染》2017年第2期38-41,共4页China Dyeing and Finishing

基　　金：浙江省科技厅项目(2015C33235);浙江省自然基金(Q15E080030);金华市科技局项目(2014-3-041)

摘　　要：以印染废水为研究对象,制备了Ti O2-CNTs催化剂,考察了紫外照射协同Ti O2-CNTs催化臭氧技术对印染废水的去除效率,并探讨了初始pH值,臭氧和催化剂投加量对印染废水COD去除效率的影响。结果表明,多元多相光催化降解效率显著高于任何单一催化或单一氧化的降解效率,反应的最佳pH值为6,COD去除效率随臭氧和催化剂投加量的增加而增大,但增大到一定量后,去除效率增加不明显。催化剂循环使用3次依然保持较好的稳定性。With dyeing wastewater as research object, The TiO2-CNTs catalyst is prepared. The photocatalytic degradation of dyeing wastewater by UV irradiation combined with TiO2-CNTs catalytic ozone is investigated. The effects of initial pH value, dosage of ozone and catalyst on the COD removal efficiency of wastewater are studied. The results show that the degradation efficiency of multielement and multiphase photocatalytic degradation is significantly higher than that of any single catalysis or single oxidation reaction. The optimum pH value of the reaction is 6. The COD removal efficiency increases with the increase of ozone dosage and catalyst dosage. The catalyst maintains good stability after 3 times recycle.

关 键 词：印染废水 光催化 多元多相 氧化降解 

分 类 号：X791[环境科学与工程—环境工程]