Research & Development

Study on refining saturated brine by nanofiltration membrane

  • Tiannan Xu ,
  • Jianyang Li ,
  • Lanyan Shao ,
  • Yuexiang Wang ,
  • Junsheng Yuan
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  • 1. School of Petrochemical Engineering,Fuzhou University,Fuzhou 350100,China
    2. Jingjiang Green-headwater Environmental Technology Co.,Ltd.
    3. College of Chemical Engineering and Materials,Quanzhou Normal University
    4. Research Center of Seawater Utilization Technology of Ministry of Education,Hebei University of Technology

Received date: 2020-06-13

  Online published: 2020-12-15

Abstract

Aiming at the problem that SO42-,Ca2+,Mg2+ and other impurity ions need to be removed in the process of direct alkali production from saturated brine,a new process for separating and refining saturated brine with nanofiltration membrane was explored.By examining the flux and ions rejection rate of three types of NF270,DL2540 and ESNA1 nanofiltration membranes,DL2540 was chosen as the experimental membrane.The effects of DL2540 nanofiltration membrane on ions rejection rate,separation performance of saturated brine from salt field and the refining effect of saturated brine were analyzed respectively.The results showed that increasing the concentration of the ions and reducing the pressure was beneficial to the separation of cations and anions with different valences.The rejection rates of SO42-,Ca2+ and Mg2+ in the saturated brine of salt field reached 95% above,30%~50% and 30%~70%,respectively.The rejection rates of DL2540 nanofiltration membrane on Na+ and Cl- were both lower than 15%,which further proved that DL2540 nanofiltration membrane has better stability and divalent ions rejection effect,and showed promising application prospect in saturated brine purification.

Cite this article

Tiannan Xu , Jianyang Li , Lanyan Shao , Yuexiang Wang , Junsheng Yuan . Study on refining saturated brine by nanofiltration membrane[J]. Inorganic Chemicals Industry, 2020 , 52(12) : 40 -45 . DOI: 10.11962/1006-4990.2020-0062

References

[1] 唐娜. 海卤水资源综合利用研究[J]. 天津科技大学学报, 2014(2):I0002.
[2] 蒋保良. 滩晒饱和盐卤制碱问题的探讨[J]. 纯碱工业, 1996(1):44-45.
[3] 王玉琪, 蒋涛. 浅谈卤水净化与部分工艺的改进[J]. 中国盐业, 2017(12):50-53.
[4] 胡宁沙. 超滤在卤水精制中的预处理工艺研究[D]. 天津:天津工业大学, 2015.
[5] 朱明丽, 李俊杰, 曹正伟, 等. 纯碱行业卤水中硫酸根的脱除[J]. 无机盐工业, 2016,48(11):57-61.
[6] 孙鹏. 膜技术在水处理行业中的应用研究[J]. 盐科学与化工, 2017,46(2):1-4.
[7] 康为清, 时历杰, 赵有璟, 等. 水处理中膜分离技术的应用[J]. 无机盐工业, 2014,46(5):6-9.
[8] 刘俊强, 路建新, 刘琪, 等. 纳滤卤水精制技术在纯碱生产中的应用[J]. 纯碱工业, 2015(4):15-17.
[9] Madaeni S S, Kazemi V. Treatment of saturated brine in chlor-alkali process using membranes[J]. Separation and Purification Technology, 2008,61(1):68-74.
[10] 潘玉强, 吴中平, 赵亮, 等. 纳滤技术处理地下卤水的研究及工程化应用[J]. 纯碱工业, 2019(4):1.
[11] Pérez-González A, Ibánez R, Gónez P, et al. Nanofiltration separation of polyvalent and monovalent anions in desalination brines[J]. Journal of Membrane Science, 2015,473:16-27.
[12] 吴舜泽, 王宝贞. 荷电纳滤膜对无机物的分离[J]. 水处理技术, 2000,26(5):253-258.
[13] 刘佳音, 盛宇星, 宁友吉, 等. 纳滤膜在废水脱盐应用中的分盐行为研究[J]. 能源化工, 2018,39(4):19-24.
[14] 武福平, 焦相伟, 郭译文, 等. 国产纳滤膜对无机盐截留性能的研究[J]. 水处理技术, 2018,44(12):46-49.
[15] Yamauchi A, Shin Y, Shinozaki M, et al. Membrane characteristics of composite collodion membrane[J]. Journal of Membrane Science, 2000,170(1):1-7.
[16] 姜迪, 徐异峰, 陆国太, 等. 低浓度范围内盐浓度对纳滤膜截留性能的影响[J]. 膜科学与技术, 2017(1):64-68.
[17] Schaep J, Van der Bruggen B, Vandecasteele C, et al. Influence of ion size and charge in nanofiltration[J]. Separation and Purification Technology, 1998,14(1/2/3):155-162.
[18] 刘杰, 袁俊生, 纪志永, 等. 纳滤法高浓盐水精制及传质性能[J]. 水处理技术, 2016,42(4):17-20.
[19] 张经纬. 膜技术在制碱工业领域的应用[J]. 盐业与化工, 2015,44(8):1-3.
[20] 云玉娥, 刘艳娟, 王秉钧. 浓海水化盐精制工艺实验研究[J]. 山东化工, 2016,45(16):39-41.
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