化工进展 ›› 2019, Vol. 38 ›› Issue (01): 672-681.DOI: 10.16085/j.issn.1000-6613.2018-1158

• 资源与环境化工 • 上一篇    下一篇

离子膜电渗析在高盐废水“零排放”中的应用、机遇与挑战

颜海洋1,2(),汪耀明1,2(),蒋晨啸1,王晓林2,李传润2,吴亮1,徐铜文1()   

  1. 1. 中国科学技术大学化学与材料科学学院,安徽 合肥 230026
    2. 合肥科佳高分子材料科技有限公司,安徽 合肥 230093
  • 收稿日期:2018-06-01 修回日期:2018-10-19 出版日期:2019-01-05 发布日期:2019-01-05
  • 通讯作者: 汪耀明,徐铜文
  • 作者简介:颜海洋(1990—),男,博士研究生,从事离子膜过程的应用研究。E-mail:<email>oceanyan@mail.ustc.edu.cn</email>。|汪耀明,副研究员,从事膜相关过程的理论与应用研究。E-mail:<email>ymwong@ustc.edu.cn</email>|徐铜文,教授,博士生导师,从事膜材料及过程研究。E-mail:<email>twxu@ustc.edu.cn</email>
  • 基金资助:
    国家自然科学基金(21676259);中科院国家合作专项(21134ky5b20170010);科技部重点研发计划(2016YFB0600503);国家自然科学基金(21676259);中科院国家合作专项(21134ky5b20170010);科技部重点研发计划(2016YFB0600503)。

Ion exchange membrane electrodialysis for high salinity wastewater “zero liquid discharge”: applications, opportunities and challenges

Haiyang YAN1,2(),Yaoming WANG1,2(),Chenxiao JIANG1,Xiaolin WANG2,Chuanrun LI2,Liang WU1,Tongwen XU1()   

  1. 1. School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 230026, Anhui, China
    2. Hefei ChemJoy Polymer Materials, Co., Ltd., Hefei 230093, Anhui, China
  • Received:2018-06-01 Revised:2018-10-19 Online:2019-01-05 Published:2019-01-05
  • Contact: Yaoming WANG,Tongwen XU

摘要:

高盐废水“零排放”是当今很多企业需要面临的非常严峻的环保问题,而离子膜电渗析由于其独特的分离机制能够实现高盐废水中无机盐的分离、浓缩和资源化利用,从而实现水和盐的回收利用。本文综述了离子膜电渗析目前在高盐废水“零排放”盐浓缩工艺中的应用情况;展望了电渗析在高盐高COD废水中的应用前景以及新型的电渗析技术如选择性电渗析和双极膜电渗析在混盐分离和盐的资源化利用中的机遇;同时指出离子膜电渗析在大规模应用中仍存在很多挑战,如离子膜性能的提高、电渗析工艺的优化和电渗析设备的投资成本和能耗如何降低。本文将为高盐废水“零排放”提供新思路,同时为离子膜电渗析在高盐废水“零排放”中的规模化应用奠定基础。

关键词: 离子膜, 电渗析, 高盐废水, 零排放

Abstract:

Recently, high-salinity wastewater “zero liquid discharge” has become a seriously environmental issue for many companies, while the salts in high-salinity wastewater can be separated, concentrated, and reutilized by ion exchange membrane electrodialysis due to its special separation mechanism, resulting in the recycling of water and salts. In this paper, an application of ion exchange membrane electrodialysis in high-salinity “zero liquid discharge” for recent years was reviewed. Additionally, the potential of electrodialysis for treating high-salinity-high-COD wastewater was prospected, as well as the opportunity of the novel electrodialysis such as selective electrodialysis and bipolar membrane electrodialysis for separation of mixed salts and reutilization of the separated salts. Meanwhile, many challenges were point out in consideration of the large-scale application of electrodialysis, such as the advancement of ion exchange membrane properties, optimization of electrodialysis process, and the decrease in investment and running cost for electrodialysis apparatus. The progress proposed in this paper will provide a new method for the high-salinity wastewater “zero liquid discharge”. Besides, this progress will lay the foundations for large-scale application of ion exchange membrane electrodialysis in the high-salinity wastewater “zero liquid discharge” .

Key words: ion exchange membrane, electrodialysis, high-salinity wastewater, zero liquid discharge

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