Abstract This paper investigated the membrane fouling mitigation efficacy and performance of a home-made submerged module containing outer selective hollow fiber thin film composite forward osmosis (OSHF TFC FO) membrane in osmosis membrane bioreactor (OMBR) system treating municipal wastewater for desalination. Initial tests, optimization of draw solution flowrate and pumping mode for the submerged module were carried out before it was applied into the OMBR system. Overall, the OMBR system exhibited an initial water flux of approximately 6.3 LMH using 35 g/L NaCl as draw solution, and high removal efficiencies of bulk organic matter and nutrients. Moreover, membrane fouling was effectively mitigated with slow rate of flux decline during 33-day operation of the OMBR system. These results indicated that the submerged membrane module of OSHF TFC FO membrane has stable and reliable performances making it suitable for OMBR supplication without the need of air scouring to prevent membrane fouling.

中文翻译：

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用于海水淡化渗透膜生物反应器中有效减少污垢的外选择性中空纤维膜浸没式组件

摘要 本文研究了在渗透膜生物反应器 (OMBR) 系统中处理城市污水以进行海水淡化的自制浸没式组件的膜污染缓解功效和性能，该组件包含外部选择性中空纤维薄膜复合正渗透 (OSHF TFC FO) 膜。在将浸入式模块应用于 OMBR 系统之前，对其进行了初始测试，优化了汲取溶液流速和泵送模式。总体而言，OMBR 系统使用 35 g/L NaCl 作为汲取溶液，表现出约 6.3 LMH 的初始水通量，以及大量有机物和营养物的高去除效率。此外，在 OMBR 系统运行 33 天期间，膜污染得到有效缓解，通量下降速度缓慢。