含锰氧化物的陶粒催化臭氧氧化苯甲酸废水  

Catalytic oxidation of benzoic acid wastewater by manganese oxide containing pottery grains

作　　者：汪星志 汪晓军[1] 王蓓蓓[1] 徐金玲[1] 

机构地区：[1]华南理工大学环境与能源学院,工业聚集区污染控制与生态修复教育部重点实验室,广州510006

出　　处：《环境工程学报》2016年第7期3653-3656,共4页Chinese Journal of Environmental Engineering

基　　金：广东省科技厅广东省社会发展攻关计划项目(2013B021000007);2015年度广东省应用型科技研发专项(2015B020235013)

摘　　要：分别以含锰氧化物的陶粒和普通陶粒为填料,以O_3体系和催化剂体系作为参照,研究臭氧在填料的异相催化条件下对苯甲酸的去除效果。结果表明：O_3/催化剂体系具有更好的催化效果,同时O_3/催化剂体系可有效改善废水的可生化性,并减少臭氧投加量和处理成本;初始pH为7～12时,废水的苯甲酸去除效果较好,且O_3/催化剂体系的臭氧利用率比O_3/普通陶粒体系、空柱的臭氧利用率更高,在初始pH为7时O_3/催化剂体系的臭氧利用率提升效果最显著。The removal rate of benzoic acid by ozone oxidation with heterogeneous catalysts comprising manganese oxide containing pottery grain was compared with that of common pottery grains,O_3,and an O_3/ catalytic system. Results indicate an improved biodegradability and catalytic effect in O_3/ catalytic systems,which translate to a decrease in operation costs with ozone dosage. In addition,the removal rate of benzoic acid between pH 7 and 12 was enhanced and the ozone consumption rate in O_3/ catalysts was higher than that observed in O_3 and O_3/ common pottery grain systems. A maximal improvement in the ozone consumption rate of O_3/ catalytic systems was observed at pH 7.

关 键 词：化学氧化 臭氧催化剂 氧化锰 苯甲酸 

分 类 号：X703[环境科学与工程—环境工程]