载银活性炭去除饮用水中溴酸盐的效能研究  

Removal Efficiency of Bromate from Water by Ag-AC

作　　者：董紫君[1] 尹文超 董洋 DONG Zijun;YIN Wenchao;DONG Yang

机构地区：[1]深圳职业技术学院,广东深圳518055 [2]中国建筑设计院有限公司,北京100044 [3]中国市政工程西南设计研究总院有限公司,四川成都610081

出　　处：《天津科技》2017年第8期44-47,共4页Tianjin Science & Technology

基　　金：国家自然科学基金(51608330);(51378316);深圳市科技研发资金(JSKF20150901115155532)

摘　　要：通过序批实验对比研究了载银活性炭(Ag-AC)和母炭(AC)对水中溴酸盐的去除效果,并考察了pH值、初始BrO_3^-浓度以及水中阴离子对Ag-AC去除溴酸盐的影响。结果表明:与母炭(AC)相比,Ag-AC对溴酸盐的去除显示出更优的效果,去除效率比母炭提高了一倍;pH值对于Ag-AC去除BrO_3^-的吸附容量有较大影响,在酸性条件下较高,在碱性条件下较低。初始BrO_3^-浓度越高,载银活性炭对BrO_3^-的吸附容量越大;水中阴离子也会影响BrO_3^-的去除,其对溴酸盐去除的影响的强弱顺序为NO_3^->SO_4^(2-)>CO_3^(2-)>PO_4^(3-)>Cl^-≈Br^->F^-。Batch experiments were conducted to make a comparison of bromate removal effect between the silver-supported activated carbon(Ag-AC)and virgin grander activated carbon(AC).The effect of pH,initial bromate concentration and coexist anions were also investigated in the study.Results showed that the removal efficiency of bromate increases by two times by using Ag-AC than AC.Bromate reduction by Ag-AC increases as the solution's pH value decreases.The bigger the initial concentration was,the larger BrO3-adsorption capacity by Ag-AC was.The affinity of anions for Ag-AC sites increased in the following order:NO3->SO42->CO32->PO43->Cl-≈Br->F-when the co-exist anion concentration was1,mg/L.

关 键 词：溴酸盐 载银活性炭 吸附 

分 类 号：TU991.2[建筑科学—市政工程]