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Vol. 26 No. 16 (2014): Vol 26 Issue 16

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Pretreatment of Brine Generated from Desalination Process for its Reclamation by Bipolar Membrane Electrodialysis

https://doi.org/10.14233/ajchem.2014.16639
K.K. Wang
College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, P.R. China
M. Wang
College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, P.R. China
P.F. Zhou
College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, P.R. China
Q.C. Ren
Beijing Unisplendour Empyreal Environmental Engineering Technology Co. Ltd, Beijing 100083, P.R. China

Corresponding Author(s) : M. Wang

wangmeng@ouc.edu.cn

Asian Journal of Chemistry, Vol. 26 No. 16 (2014): Vol 26 Issue 16

Abstract

Due to the exact demands of bipolar membrane electrodialysis (BMED) on water quality, an effective pretreatment for the effluents from desalination processes is one of the most important tasks for putting the bipolar membrane electrodialysis reclamation technology into practical use. In this study, an enhanced softening method in which the Na2CO3-NaOH softening and polyaluminium chloride coagulation were combined was attempted. Series of experiments designed by Response surface methodology (RSM) were conducted for exploring the relationships between the removal rate of the contaminants and the relevant independent variables. Based on the obtained models, an optimum scheme can be achieved. At last, various kinds of typical domestic cation exchange resins were attempted for further reduction of the hardness and the relevant optimum operating conditions, such as resin type and flow rate of brine, were obtained.

Keywords

Enhanced softening method Electrodialysis Brine reclamation Polyaluminum chloride Response surface methodology
Wang, K., Wang, M., Zhou, P., & Ren, Q. (2014). Pretreatment of Brine Generated from Desalination Process for its Reclamation by Bipolar Membrane Electrodialysis. Asian Journal of Chemistry, 26(16), 5177–5182. https://doi.org/10.14233/ajchem.2014.16639
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