无机离子对催化臭氧化降解水中痕量硝基苯效果的影响  

Effect of Inorganic Ions on Degradation of Trace Nitrobenzene in Aqueous Solution by Catalytic Ozonation

作　　者：赵雷[1] 马军[1] 孙志忠[1] 

机构地区：[1]哈尔滨工业大学市政环境工程学院,哈尔滨150090

出　　处：《环境科学》2006年第5期924-929,共6页Environmental Science

基　　金：国家自然科学基金项目(50378028)

摘　　要：考察了天然水体中常见的无机离子对单独臭氧氧化、臭氧／蜂窝陶瓷和臭氧／改性蜂窝陶瓷3种氧化工艺分解水中痕量硝基苯的影响，单独臭氧氧化和臭氧／改性蜂窝陶瓷对硝基苯的分解效率随着钙离子浓度的升高（0～4mg·L^-1）分别增加了5．0％和8．6％，在相同实验条件下，臭氧／蜂窝陶瓷对硝基苯的降解效率在钙离子浓度为0．5mg·L^-1时达到最大值；单独臭氧氧化、臭氧／蜂窝陶瓷和臭氧／改性蜂窝陶瓷在锰离子浓度增加（0～4mg·L^-1）的情况下对硝基苯的去除率分别增加了10．9％、11．6％和9．6％，随着重碳酸根离子浓度的增加（0～200mg·L^-1）分别降低了8.6％、11．5％和8．9％；硝酸根和硫酸根离子浓度对单独臭氧氧化降解水中硝基苯无明显影响，另2种氧化工艺对硝基苯的分解效率随着硝酸根和硫酸根离子浓度的增加而降低。The experiment investigated the effects of general inorganic ions in natural murce water on the three processes of ozonation alone, ceramic honeycomb and modified ceramic honeycomb-catalyzed ozonation for degradation of trace nitrobenzene in aqueous mlution. The removal rate of ozonation alone and modified ceramic honeycomb-catalyzed ozonation increased by 5.0 % and 8.6 % with the increase of the concentration of calcium ion （0 - 4mg·L^-1）, and that of ceramic honeycomb catalyzed ozonation reached the climax at the concentration of calcium ion 0.5mg·L^-1under the same experimental condition. The degradation efficiency of ozonation alone, ceramic honeycomb and modified ceramic honeycomb-catalyzed ozonation enhanced by 10.9 %, 11.6 % and 9.6% with the increase of the concentration of manganese ion （0～4mg·L^-1 ）, respectively, and decreased by 8.6 % , 11.5 % and 8.9 % with the increase of the concentration of bicarbonate ion （0～ 200mg·L^-1）. The concentration of nitrate and sulfate ion had no remarkable effect on ozonation alone, but the removal rate of other two processes decreased with the increase of the concentration of nitrate and sulfate ion.

关 键 词：催化臭氧化 改性蜂窝陶瓷 硝基苯 钙离子 锰离子 重碳酸根离子 硝酸根离子 硫酸根离子 

分 类 号：X703.1[环境科学与工程—环境工程]