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.
出处
《环境工程学报》
CAS
CSCD
北大核心
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)
关键词
化学氧化
臭氧催化剂
氧化锰
苯甲酸
chemical oxidation
ozone catalyst
manganese oxide
benzonic acid
