膜科学与技术

采用高效纳滤-低压反渗透集成膜工艺的海水淡化研究

作者：周栋¹，²，傅寅翼¹，薛立新¹，朱丽静¹，朱鸣鹤²

单位： 1．中国科学院宁波材料技术与工程研究所高分子事业部、中国科学院海洋新材料与应用技术重点实验室、浙江省海洋材料与防护技术重点实验室、中国科学院宁波材料技术与工程研究所，浙江省宁波市中官西路1219号，315201； 2．宁波大学海运学院，浙江省宁波市风华路818号，315211

关键词：高效纳滤；低压反渗透；海水淡化；节能；低成本

DOI号：

分类号： TQ028.8；TQ95

出版年,卷(期):页码： 2016,36(3):62-69

摘要：

针对纳滤-反渗透海水淡化（NF-SWRO）工艺第一级脱盐率不高，继而造成第二级操作压力大以及能耗高等问题，本文提出了高效纳滤-低压反渗透（HRNF-LPRO）集成膜工艺用于海水淡化，并进行了初步的探索性研究试验。实验结果表明：在操作压力2.6MPa、1.4MPa条件下，HRNF-LPRO集成工艺可脱除人工海水（34998mg/L）中99.84%的盐分得到淡化海水。ROSA模拟表明，在给水浓度34967.39mg/L条件下，HRNF-LPRO工艺的产水溶解性总固体（TDS）为231.17mg/L，综合产水能耗为3.264 kWh/m³。HRNF-LPRO集成工艺不仅降低了第二级脱盐操作压力，也降低了设备要求，从而有利于降低产水成本。

The salt rejection in the first stage of current nanofiltration-reverse osmosis (NF-SWRO) seawater desalination process is not high, resulting in high operation pressure of second stage and high energy consumption. This study proposed the high rejection nanofiltration-low pressure reverse osmosis (HRNF-LPRO) desalination process. In the NF desalting experimental study, The overall Total Dissolved Solids(TDS) rejection of HRNF-LPRO process was 99.84%, when the TDS of feedwater was 34998mg/L and the operation pressure of the two desalination process were 2.6MPa and 1.4MPa, respectively. If the feedwater TDS was 34967.39 mg/L, ROSA simulation showed that the TDS of permeate should be as low as 231.17 mg/L and the overall energy consumption of product water would reduce to 3.264 kWh/m3. The HRNF-LPRO integrated process is of great significance for reducing the pressure of the second desalination process and the equipment requirements, saving costs of water production.

基金项目：

国家科技部863项目（2014BAJ02B02），宁波市科技创新团队（2014B81004），宁波市自然科学基金（2013C910012，2014A610137， 2014A610138和2014B70023），宁波市智团创业项目（2014B70023），宁波市农业创新创业项目（2013C910012）和宁波市重大工业攻关项目（2015B11041）的支持，同时感谢中国科学院宁波材料技术与工程研究所“旗舰计划”和绍兴市330人才项目基金的大力支持。

作者简介：

作者简介：周栋（1988-），男，湖北孝感人，硕士生，从事膜材料制备及应用研究。通讯联系人*，Email: fuyinyi@nimte.ac.cn, xuelx@nimte.ac.cn,

参考文献：

[1] 王世昌. 海水淡化工程[M]. 北京:化学工业出版社,2003.
[2] Dawoud M A. Water import and transfer versus desalination in arid regions: GCC countries case study[J]. Desalination and Water Treatment, 2011 28: 153-163.
[3] Zheng X, Chen D, Wang Q. Seawater desalination in China: Retrospect and prospect[J]. Chemical Engineering Journal, 2014 242: 404-413.
[4] Khawaji A D, Kutubkhanah I K, Wie J M. Advances in seawater desalination technologies[J]. Desalination, 2008 221: 47-69.
[5] Misdan N, Lau W J, Ismail A F. Seawater Reverse Osmosis (SWRO) desalination by thin-film composite membrane-Current development, challenges and future prospects[J]. Desalination, 2012 287: 228-237.
[6] Greenlee L F, Lawler D F, Freeman B D, et al. Reverse osmosis desalination: water sources, technology, and today's challenges[J]. Water Research, 2009 43: 2317-2348.
[7] Maliva R, Missimer T. Desalination: Desalination in Arid Lands, In Arid Lands Water[M]. Evaluation and Management, Springer Berlin Heidelberg, 2012: 701-748.
[8] Hisham E, Wilf M. Commercial desalination technologies. seawater desalination[M]. Springer Berlin Heidelberg, 2009: 77-107.
[9] Hassan A M, Al-Sofi M A K, Al-Amoudi A, et al. A nanofiltration (NF) membrane pretreatment of SWRO feed and MSF make-up[C]. Abstract presented at IDA Conference, Madrid. 1997.
[10] Hassan A M, Al-Sofi M A K, Al-Amoudi A, et al. A new approach to membrane and thermal seawater desalination processes using nanofiltration membrane (Part 1)[J]. Desalination. 1998 118: 35-51.
[11] Hassan A M, Farooque A M, Jamaluddin A T M, et al.Conversion and operation of the commercial umm Lujj SWRO plant from a single SWRO desalination process to the new dual NF-SWRO desalination process[C].Paper presented at IDA Conference, Manama Bahrain. 2002.
[12] Farooque A M, Green T N, Mohammed N K, et al. Autopsy of NF membranes after 5 years of operation at the Umm Lujj SWRO plant[J]. Desalination and Water Treatment. 2009 3: 83-90.
[13] 刘杰. 纳滤海水淡化及其脱硼性能研究[D]. 天津大学. 2010.1.
[14] 张莉娜. 纳滤脱盐及其海水淡化中的应用[D]. 华东理工大学 2011.1.
[15] 祝陈坚. 海水分析化学实验[M]. 青岛. 中国海洋大学出版社. 2006.

服务与反馈：

【文章下载】【加入收藏】

《膜科学与技术》编辑部地址：北京市朝阳区北三环东路19号蓝星大厦邮政编码：100029 电话：010-64426130/64433466 传真：010-80485372邮箱：mkxyjs@163.com