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作 者:金欣荻 李天均[1] 颜亦磊 陈雪明[1] Jin Xindi;Li Tianjun;Yan Yilei;Chen Xueming(Department of Environmental Engineering,Zhejiang University,Hangzhou 310058,China;Zhejiang Energy Group Co.,Ltd.,Hangzhou 310007,China)
机构地区:[1]浙江大学环境工程系,浙江杭州310058 [2]浙江能源集团,浙江杭州310007
出 处:《工业水处理》2019年第2期81-85,共5页Industrial Water Treatment
摘 要:为探究无膜电去离子(MFEDI)的再生机理,采用不同树脂组合进行电再生研究。通过测定各组树脂的再生电压、再生液电导率、pH等参数,对阴阳离子电迁移路径和系统内水解离情况进行了分析。结果表明,阳离子几乎不通过弱酸树脂进行电迁移;阴离子主要在强碱树脂间迁移;水解离主要发生在弱酸树脂与强碱树脂之间,为2种树脂的再生提供82.4%以上的H^+和OH^-。In order to probe into the regeneration mechanisms of membrane-free deionization(MFEDI),various combinations of resins have been used in the research on electrical regeneration. Anionic and cationic electrical migra-tion paths and water dissociation situation in the systems have been analyzed by the determination of parameters during regeneration,such as regeneration voltages,regenerated liquid conductivities,pH,etc. The results show that almost no electrical migration occurs to the cation via weak-acid resins,whereas the anion mainly migrates among strong-base resins. Water dissociation mainly takes place at the interface between weak-acid resins and strong-base resins,which supplies more than 82.4% of H^+and OH^-for the regeneration of these two kinds of resins.
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