期刊
BIORESOURCE TECHNOLOGY
卷 342, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2021.125930
关键词
Dynamic OsMBR; Rotating FO module; Draw solution; Membrane fouling; Surfactant
资金
- Vietnam National Foundation for Science and Technology Development (NAFOSTED) [105.08-2017.311]
The study developed a Dynamic-OsMBR/NF system for municipal wastewater treatment and reuse, which significantly reduced membrane fouling and achieved high water quality for reuse. By utilizing a continuously rotating FO module and an innovative draw solution, the system demonstrated excellent performance in pollutant removal efficiency.
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 Na2CO3/0.9 mM Triton114 functioned as draw solution (DS). It was found that the Dynamic-OsMBR/NF hybrid system could effectively remove pollutants (-98% COD, -99% PO43-P, -93% NH4+-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.
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