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用EDI去除高纯水中痕量氨的新方法
引用本文:闻瑞梅,范伟,邓守权. 用EDI去除高纯水中痕量氨的新方法[J]. 电子学报, 2006, 34(8): 1367-1371
作者姓名:闻瑞梅  范伟  邓守权
作者单位:同济大学电子信息工程学院,上海 200092
摘    要:本文研究了用电脱盐(Electrodeionization) EDI,去除高纯水中痕量氨(NH3和NH4+)的新方法.研究高纯水中弱离子化杂质氨的去除及其机理;研究了电流、进水电导率、进水流量和pH等对EDI去除水中氨(NH3和NH4+)的影响,进水氨浓度为208mg/L,经过一级EDI的处理,产品水中的总氨含量为0.072mg/L,对离子态铵也有很好去除效果,对进水中NH4Cl浓度为20mg/L~100mg/L,产品水中铵浓度<0.026mg/L.结果说明这方法是目前处理高纯水中痕量氨最好结果,远远低于太空用水<0.5mg/L的要求.还研究了水中氨在EDI中被去除时的物种形态.

关 键 词:高纯水  电脱盐  弱离子化杂质氨  物种形态  
文章编号:0372-2112(2006)08-1367-05
收稿时间:2006-02-07
修稿时间:2006-02-072006-04-28

A New Method of Removing Trace Ammonia ( NH3 and NH4+ ) from High Purity Water by Using Electrodeionization
WEN Rui-mei,FAN wei,DENG shou-quan. A New Method of Removing Trace Ammonia ( NH3 and NH4+ ) from High Purity Water by Using Electrodeionization[J]. Acta Electronica Sinica, 2006, 34(8): 1367-1371
Authors:WEN Rui-mei  FAN wei  DENG shou-quan
Affiliation:Institute of Eiectronics and Information Engineering,Tongji University Shanghai,200092,China
Abstract:In this paper a new method of removing trace ammonia (NH3 and H4+) from high purity water by using electrodeionization(EDI) was studied.The removing of ammonia from high purity water and its mechanism were investigated.The dependence of the effectiveness of removing ammonia (NH3 and NH4+) on electrical current,inlet conductivity,inlet flow rate and pH value was shown.After one EDI treament the total ammonia concentration was decreased from 208mg/L to 0.072mg/L.This method is also effective for removing NH4+ ion from water.After EDI treatment NH4Cl concentration was decreased from 20~100mg/L to below 0.026mg/L.This method giving ammonia concentration much less than the required concentration of <0.5mg/L for space water proved to be the most effective among other methods for removing trace ammonia in high pure water.The species configuration during removing ammonia from water was also investigated.
Keywords:high pure water   electrodeionization   weakly ionized   ammonia configuration
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