Faculty of Chemistry and Environment, Dalat University, Dalat, Vietnam.
Le Quy Don Technical University, Hanoi, Vietnam.
Bioresour Technol. 2021 Dec;342:125930. doi: 10.1016/j.biortech.2021.125930. Epub 2021 Sep 13.
This study designed a Dynamic-Osmotic membrane bioreactor/nanofiltration (OsMBR/NF) system for municipal wastewater treatment and reuse. Results indicated that a continuously rotating FO module with 60 RPM in Dynamic-OsMBR system could enhance shear stress and reduce cake layer of foulants, leading to higher flux (50%) compared to Traditional-OsMBR during a 40-operation day. A negligible specific reverse salt flux (0.059 G/L) and a water flux of 2.86 LMH were recorded when a mixture of 0.1 M EDTA-2Na/0.1 M NaCO/0.9 mM Triton114 functioned as draw solution (DS). It was found that the Dynamic-OsMBR/NF hybrid system could effectively remove pollutants (∼98% COD, ∼99% POP, ∼93% NH-N, > 99% suspended solids) from wastewater. In short, this developed system can be considered a breakthrough technology as it successfully minimizes membrane fouling by shear force, and achieves high water quality for reuse by two membrane- barriers.
本研究设计了一种用于城市污水回用的动态渗透膜生物反应器/纳滤（OsMBR/NF）系统。结果表明，在动态-OsMBR 系统中，以 60 RPM 连续旋转的 FO 模块可以增强剪切应力并减少污染物的滤饼层，与传统-OsMBR 相比，在 40 个操作日期间通量提高了 50%。当混合使用 0.1 M EDTA-2Na/0.1 M NaCO/0.9 mM Triton114 作为汲取液（DS）时，记录到可忽略的特定反向盐通量（0.059 G/L）和 2.86 LMH 的水通量。发现动态-OsMBR/NF 混合系统可以有效地去除废水中的污染物（约 98%的 COD、约 99%的 POP、约 93%的 NH-N、>99%的悬浮物）。简而言之，该开发系统可以被视为一项突破技术，因为它成功地通过剪切力最小化了膜污染，并通过两个膜屏障实现了高质量的再利用水。
