Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/146810
Title: Enhancing performance of biocarriers facilitated gravity-driven membrane (GDM) reactor for decentralized wastewater treatment : effect of internal recirculation and membrane packing density
Authors: Lee, Seonki
Badoux, Guillaume Olivier
Wu, Bing
Chong, Tzyy Haur
Keywords: Engineering::Environmental engineering::Water treatment
Issue Date: 2021
Source: Lee, S., Badoux, G. O., Wu, B. & Chong, T. H. (2021). Enhancing performance of biocarriers facilitated gravity-driven membrane (GDM) reactor for decentralized wastewater treatment : effect of internal recirculation and membrane packing density. Science of the Total Environment, 762, 144104-. https://dx.doi.org/10.1016/j.scitotenv.2020.144104
Journal: Science of the Total Environment 
Abstract: This study aims to investigate the effect of internal recirculation and membrane packing density on the performance (water quality, membrane performance, and microbial community) of a biocarriers facilitated gravity-driven membrane (GDM) reactor under intermittent aeration condition. The results revealed that the presence of internal recirculation in the GDM reactors could effectively improve water quality (especially increasing nitrogen removal) and membrane performance (especially reducing cake layer resistance) compared to those without internal recirculation. In addition, compared to a high packing density membrane module (1150 m2/m3), a lower packing density membrane module (290 m2/m3) benefited to improve 15% of nitrogen removal and 44% of permeate flux due to the effective aeration scouring effect and less-limited eukaryotic activity, as well as reduce 20% of total treatment cost. In addition, the presence and absence of internal recirculation could lead to dissimilar microbial community compositions of the biofilms in the GAC layers and on the membrane surfaces. However, the membrane packing density could play an insignificant effect on the microbial community compositions of the biofilms in the GDM reactors with internal recirculation.
URI: https://hdl.handle.net/10356/146810
ISSN: 0048-9697
DOI: 10.1016/j.scitotenv.2020.144104
Rights: © 2020 Elsevier B.V. All rights reserved. This paper was published in Science of the Total Environment and is made available with permission of Elsevier B.V.
Fulltext Permission: embargo_20230325
Fulltext Availability: With Fulltext
Appears in Collections:NEWRI Journal Articles

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