全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...
科技导报  2015 

BMED解离硫酸盐高效清洁制酸碱工艺

DOI: 10.3981/j.issn.1000-7857.2015.14.010, PP. 59-64

Keywords: 双极膜,电渗析,废液

Full-Text   Cite this paper   Add to My Lib

Abstract:

随着工业生产的快速发展,工业废水的排放量迅猛增加,其中大部分工业废水中都含有硫酸盐,硫酸盐的过量排放会对环境水体造成严重的污染与破坏。本研究以硫酸钠废液为原料,采用双极膜电渗析(BMED)新型工艺,实现含硫酸盐废水的回收再利用,高效、清洁地制取酸、碱。实验主要考查了电流密度、原料液浓度及初始酸碱浓度对膜堆性能的影响,并对两种离子交换膜的性能进行对比。结果表明,实验范围内,氢氧化钠的收率高达84.08%,平均电流效率为54%,能耗为5.29kW·h/kg;氢氧化钠收率和过程能耗均随电流密度的增大而增加;电流密度恒定时,较高的原料液浓度可使膜堆电阻维持在较低的水平,进而降低能耗;适量加入初始酸碱能够降低能耗,但也会降低电流效率。

References

[1]  Lefebvre O, Moletta R. Treatment of organic pollution in industrial saline waste water: A literature review[J]. Water Research, 2006, 40 (20): 3671-3682.
[2]  Ghyselbrecht K, Silva A. Desalination feasibility study of an industrial NaCl stream by bipolar membrane electrodialysis[J]. Journal of Environmental Management, 2014, 140(1): 69-75.
[3]  蒋永荣, 胡明成. 硫酸盐废水生物脱硫研究进展[J]. 环境科学与技术, 2008(9): 67-71. Jiang Yongrong, Hu Mingcheng. Biological desulfurization of sulfate containing wastewater[J]. Environmental Sicnce & Technology, 2008(9): 67-71.
[4]  王浩源, 缪应祺. 高浓度硫酸盐废水治理技术的研究[J]. 环境导报, 2001(1): 22-25. Wang Haoyuan, Miao Yingqi. Research of high- sulfate wastewater treatment technology[J]. Environment Herald, 2001(1): 22-25.
[5]  王爱杰, 王丽燕. 硫酸盐废水生物处理工艺研究进展[J]. 哈尔滨工业 大学学报, 2004, 36(11): 1446-1501. Wang Aijie, Wang Liyan. Bio-treatment of sulfate-laden wastewater[J]. Jouranl of Harbin Institute of Technology, 2004, 36(11): 1446-1501.
[6]  Tanaka Y. Ion exchange membranes: Fundamentals and applications[M]. Netherlands: Elsevier, 2007.
[7]  Xu T. Electrodialysis processes with bipolar membranes (EDBM) in environmental protection: A review[J]. Resource Conservation and Recycling, 2002, 37(1): 1-22.
[8]  Bukhovets A, Eliseeva T, Dalthrope N. The influence of current density on the electrochemical properties of anion- exchange membranes in electrodialysis of phenylalanine solution[J]. Electrochimica Acta, 2011, 56(27): 10283-10287.
[9]  Wi?niewski J, Wi?niewska G, Winnicki T. Application of bipolar electrodialysis to the recovery of acids and bases from water solutions[J]. Desalination, 2004, 169(1): 11-20.
[10]  Huang C, Xu T, Zhang Y, et al. Application of electrodialysis to theproduction of organic acids: State of the art and recent developments[J]. Journalof Membrane Science, 2007, 288(1): 1-12.
[11]  Rodrigues M A S, Dalla C R F, Zoppas F J. Influence of ligand exchange on the treatment of trivalent chromium solutions by electrodialysis[J]. Electrochimica Acta, 2001, 47(5): 753-758.
[12]  Sadrzadeh M, Mohammadi T. Separation of different ions from wastewater at various operating conditions using electrodialysis[J]. Separation and Purification Technology, 2007, 54(2): 147-156.
[13]  Le X T, Viel P, Sorin A, et al. Electrochemical behaviour of poly-acrylic acid coated gold electrodes: An application to remove heavy metal ions from waste water[J]. Electrochimica Acta, 2009, 54: 6089-6093.
[14]  Aritomi T, Nago S, Hanada F. Performance of an improved bipolar membrane[J]. Membrane Technology, 2001, 2001(135): 11-13.
[15]  Kang M S. Enhancement of water splitting in bipolar membranes by optimized composite anion-exchange layer and alkali-treated polyacrylonitrile catalytic junction[J]. Journal of Membrane Science, 2004, 229: 137-146.
[16]  Hwang U, Choi J. Changes in the electrochemical characteristics of a bipolar membrane immersed in high concentration of alkaline solutions[J]. Separation and Purification Technology, 2006, 48(1): 16-23.
[17]  Wilhelm F G, Pünt I, van der Vegt N F A. Optimisation strategies for the preparation of bipolar membranes with reduced salt ion leakage in acid-base electrodialysis[J]. Journal of Membrane Science, 2001, 182 (1-2): 13-28.
[18]  FrankenT.Bipolarmembranetechnologyanditsapplications[J].Membrane Technology, 2000, 2000(125): 8-11.
[19]  Ilhan F, Kabuk H A, Kurt U, et al. Evaluation of treatment and recovery of leachate by bipolar membrane electrodialysis process[J]. Chemical Engineering and Processing: Process Intensification, 2014, 75: 67-74.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133