Abst'/> The feasibility of nanofiltration membrane bioreactor (NF-MBR)+ reverse osmosis (RO) process for water reclamation: Comparison with ultrafiltration membrane bioreactor (UF-MBR)+RO process
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The feasibility of nanofiltration membrane bioreactor (NF-MBR)+ reverse osmosis (RO) process for water reclamation: Comparison with ultrafiltration membrane bioreactor (UF-MBR)+RO process

机译：纳滤膜生物反应器（NF-MBR）+反渗透（RO）工艺用于水回收的可行性：与超滤膜生物反应器（UF-MBR）+ RO工艺的比较

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摘要

AbstractThis study examines the feasibility of a novel nanofiltration membrane bioreactor (NF-MBR) followed by reverse osmosis (RO) process for water reclamation at 90% recovery and using an ultrafiltration MBR (UF-MBR)+RO as baseline for comparison. Both MBRs adopted the same external hollow fiber membrane configurations and operating conditions. The collected permeates of the MBRs were subsequently fed to the respective RO systems. The results showed that the NF-MBR (operated at a constant flux of 10 L/m2h) achieved superior MBR permeate quality due to enhanced biodegradation and high rejection capacity of the NF membrane, leading to lower RO fouling rates (∼3.3 times) as compared to the UF-MBR. Further analysis indicated that the cake layer fouling that caused the cake-enhanced osmotic pressure (CEOP) effect contributed predominantly to the transmembrane pressure (TMP) increase in the NF-MBR, while irreversible pore fouling was the major reason for UF membrane fouling. Furthermore, it was found that the biopolymers (i.e., organics with MW > 10 kDa) were the main components present in the foulants of the NF/UF membranes and RO membranes. The analysis indicated that the NF-MBR + RO system at recovery of 90% has comparable energy consumption as the UF-MBR + RO system at recovery of 75%. Our findings proved the feasibility of the NF-MBR + RO for water reclamation at a high recovery rate.Graphical abstractDisplay OmittedHighlights•A novel NF-MBR + RO system for high recovery water reclamation was developed.•The high-flux NF-MBR achieved excellent permeate quality in treating domestic wastewater.•Fouling mechanisms and foulant characteristics in the NF-MBR + RO and UF-MBR + RO system were illustrated.•Energy consumption between the NF-MBR + RO and UF-MBR + RO system was compared.
机译： 摘要 此研究检查了新型纳滤膜生物反应器（NF-MBR）进行反渗透（RO）工艺进行水再生的可行性。回收率达到90％，并使用超滤MBR（UF-MBR）+ RO作为基线进行比较。两种MBR均采用相同的外部中空纤维膜配置和操作条件。随后将收集的MBR渗透物送入各自的反渗透系统。结果表明，NF-MBR（以10 L / m 2 h的恒定通量运行）由于增强了生物降解和高排阻而获得了优异的MBR渗透质量与UF-MBR相比，NF膜具有更高的容量，可降低RO结垢率（约3.3倍）。进一步的分析表明，导致滤饼渗透压（CEOP）效应的滤饼层结垢主要是导致NF-MBR中跨膜压（TMP）升高的原因，而不可逆的孔垢是造成UF膜结垢的主要原因。此外，还发现生物聚合物（即MW> 10 kDa的有机物）是NF / UF膜和RO膜污垢物中的主要成分。分析表明，回收率达90％的NF-MBR + RO系统的能耗与回收率达75％的UF-MBR + RO的系统相当。我们的发现证明了NF-MBR + RO在高回收率下进行水回收的可行性。 图形摘要 显示省略 突出显示 • 一种新颖的NF-开发了用于高回收率水回收的MBR + RO系统。 • 高通量NF-MBR在处理生活废水中具有优异的渗透质量。 •< / ce：label> 说明了NF-MBR + RO和UF-MBR + RO系统中的结垢机理和结垢特性。 • NF之间的能耗比较了-MBR + RO和UF-MBR + RO系统。

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  • 来源
    《Water Research》 |2018年第1期|180-189|共10页
  • 作者

    Ming Feng Tay; Chang Liu; Emile R. Cornelissen; Bing Wu; Tzyy Haur Chong;

  • 作者单位

    School of Civil and Environmental Engineering, Nanyang Technological University,Singapore Membrane Technology Centre, Nanyang Environment and Water Research Institute, Nanyang Technological University;

    Singapore Membrane Technology Centre, Nanyang Environment and Water Research Institute, Nanyang Technological University;

    Singapore Membrane Technology Centre, Nanyang Environment and Water Research Institute, Nanyang Technological University,KWR Watercycle Research Institute;

    Singapore Membrane Technology Centre, Nanyang Environment and Water Research Institute, Nanyang Technological University;

    School of Civil and Environmental Engineering, Nanyang Technological University,Singapore Membrane Technology Centre, Nanyang Environment and Water Research Institute, Nanyang Technological University;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Energy consumption; Dissolved organic substances; Membrane fouling; Nanofiltration; Reverse osmosis; Water reclamation;

    机译：能源消耗;溶解性有机物;膜污染;纳滤;反渗透;水回收;

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