| 电去离子过程水解离的基本特征 |
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| 引用本文： | 刘红斌,龚承元,马军,苏建勇,朱孟府.电去离子过程水解离的基本特征[J].膜科学与技术,2003,23(4):30-33. |
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| 作者姓名： | 刘红斌 龚承元 马军 苏建勇 朱孟府 |
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| 作者单位： | 军事医学科学院卫生装备研究所,天津,300161 |
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| 摘 要： | 通过考察EDI膜堆由非稳态到稳态的过程中浓水电导率的变化规律以及处于稳态条件下的V—I特性曲线，探讨EDI过程水解离的基本特征．研究表明，在膜堆内部离子一旦发生定向迁移，在树脂表面水界面层中就会形成较高的电势梯度，引起水的解离，而且在高电流密度下，淡室中离子交换膜表面水界面层也会发生水解离．
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| 关 键 词： | 电去离子 水解离 特征 电渗析 离子迁移 离子交换 电再生 水处理 |
| 文章编号： | 1007-8924(2003)04-0030-04 |
| 修稿时间： | 2003年6月2日 |
Basic character of water decomposition of electrodeionization process |
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| LIU Hongbin,GONG Chengyuan,MA Jun,SU Jianyong,ZHU Mengfu.Basic character of water decomposition of electrodeionization process[J].Membrane Science and Technology,2003,23(4):30-33. |
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| Authors: | LIU Hongbin GONG Chengyuan MA Jun SU Jianyong ZHU Mengfu |
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| Abstract: | The V-I characteristic curve of EDI is acquired under the stable state,and the basic character of water decomposition is discussed.The results indicate that as soon as ion migration happens in the diluting compartments,the high potential gradient arises on the water boundary layer of resins surface.Water can be split into (H +) and (OH -) ions,which regenerate ion exchange resins.By analysis of the V-I characteristic curve,the water decomposition on the water boundary layer of membranes surface in diluting compartments is observed under higher operating voltage too. |
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| Keywords: | electrodeionization electrodialysis ion transfer ion exchange electroregeneration |
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