Seawater Desalination by Using Nanofiltration (NF) and Brackish Water Reverse Osmosis (BWRO) Membranes in Sequential Mode of Operation

Q2 Materials Science

Journal of Membrane Science and Research Pub Date : 2020-01-01 DOI:10.22079/JMSR.2019.107844.1264

C. Kaya, Y. A. Jarma, Enver Guler, N. Kabay, M. Arda, Mithat Yükse

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引用次数: 15

Abstract

In this study, the applicability of nanofiltration (NF) membranes as a pretreatment prior to reverse osmosis (RO) in seawater desalination was investigated. The membranes used wereNF270 and NF90 as the NF membranes, while the brackish water (BW) RO membrane BW30 was used as the RO membrane. In desalination tests, permeates of the NF membraneswere collected and used as the feed to the BW30 membrane. The calculated permeate fluxes were 6.7 L/h.m2, 11.3 L/h.m2, 24.3 L/h.m2, and 36.6 L/h.m2 for single BW30-35 bar,NF270-30 bar + BW30-35 bar, NF90-30 bar + BW30-25 bar and NF90-30 BW30-35 bar, respectively. The calculated water recovery and rejected salt values were 51.6%, 41.4%,24.8%, 15.4% and 98.2%, 98.2%, 96.0%, 91.0% for NF90-30 bar + BW30-35 bar, NF90-30 bar + BW30-25 bar, NF270-30 bar + BW30-35 bar and single BW30-35 bar, respectively.The qualities of the product waters of integrated systems (NF+BWRO) and the single BWRO system were also investigated. Boron rejection was fairly well with average boronrejections of 59.3% and 60.2% by NF90-30 bar + BW30-25 bar and NF90-30 bar + BW30-35 bar combinations, respectively while single BW30-35 bar gave an average rejection of49.6%. The results obtained showed that the quality of product water obtained using single BWRO did not comply with the irrigation standards, while the integrated systems providedtotal compliance to irrigation standards with the exception of boron.

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纳滤(NF)和微咸水反渗透(BWRO)膜顺序操作的海水淡化

在本研究中，研究了纳滤(NF)膜作为反渗透(RO)前预处理在海水淡化中的适用性。采用enf270和NF90作为滤膜，微淡水反渗透膜BW30作为反渗透膜。在脱盐试验中，收集了纳滤膜的渗透液，作为BW30膜的进料。计算的渗透通量为6.7 L/h。m2, 11.3 L/h。m2, 24.3 L/h。m2, 36.6 L/h。单个BW30-35 bar、NF270-30 bar + BW30-35 bar、NF90-30 bar + BW30-25 bar和NF90-30 BW30-35 bar分别为m2。NF90-30 bar + BW30-35 bar、NF90-30 bar + BW30-25 bar、NF270-30 bar + BW30-35 bar和单一BW30-35 bar的计算含水率和废盐值分别为51.6%、41.4%、24.8%、15.4%和98.2%、98.0%、96.0%、91.0%。研究了综合系统(NF+BWRO)和单一BWRO系统的产水水质。NF90-30 bar + BW30-25 bar和NF90-30 bar + BW30-35 bar组合对硼的平均去除率分别为59.3%和60.2%，而单个BW30-35 bar的平均去除率为49.6%。结果表明，采用单一BWRO获得的产品水水质不符合灌溉标准，而采用综合系统获得的产品水除硼外均符合灌溉标准。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Membrane Science and Research Materials Science-Materials Science (miscellaneous)

CiteScore

4.00

自引率

0.00%

发文量

审稿时长

8 weeks

期刊介绍： The Journal of Membrane Science and Research (JMSR) is an Open Access journal with Free of Charge publication policy, which provides a focal point for academic and industrial chemical and polymer engineers, chemists, materials scientists, and membranologists working on both membranes and membrane processes, particularly for four major sectors, including Energy, Water, Environment and Food. The journal publishes original research and reviews on membranes (organic, inorganic, liquid and etc.) and membrane processes (MF, UF, NF, RO, ED, Dialysis, MD, PV, CDI, FO, GP, VP and etc.), membrane formation/structure/performance, fouling, module/process design, and processes/applications in various areas. Primary emphasis is on structure, function, and performance of essentially non-biological membranes.