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Reactor performance and membrane fouling of a novel submerged aerobic granular sludge membrane bioreactor during long-term operation

Jianfeng Li, Yanjun Liu, Xiaoning Li, Fangqin Cheng
Available Online 18 August 2017, jwrd2017019; DOI: 10.2166/wrd.2017.019
Jianfeng Li
Institute of Resources and Environmental Engineering, State Environmental Protection Key Laboratory of Efficient Utilization Technology of Coal Waste Resources, Shanxi University, Taiyuan 030006, China E-mail: lijianfeng@sxu.edu.cnShanxi Collaborative Innovation Center of High Value-added Utilization of Coal-related Wastes, Taiyuan, Shanxi 030006, China
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Yanjun Liu
Institute of Resources and Environmental Engineering, State Environmental Protection Key Laboratory of Efficient Utilization Technology of Coal Waste Resources, Shanxi University, Taiyuan 030006, China E-mail: lijianfeng@sxu.edu.cn
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Xiaoning Li
Environmental Protection Department of Shandong Province, Jinan 25010, PR China
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Fangqin Cheng
Institute of Resources and Environmental Engineering, State Environmental Protection Key Laboratory of Efficient Utilization Technology of Coal Waste Resources, Shanxi University, Taiyuan 030006, China E-mail: lijianfeng@sxu.edu.cnShanxi Collaborative Innovation Center of High Value-added Utilization of Coal-related Wastes, Taiyuan, Shanxi 030006, China
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Abstract

The aerobic granular sludge membrane bioreactor (AGS-MBR) has the potential for simultaneous carbon/nitrogen removal and membrane fouling mitigation. Most studies have focused on comparison of granular sludge MBR and flocculent sludge MBR in short-term tests using synthetic wastewater. In this study, two identical AGS-MBRs were developed, and the reactor performance and membrane fouling were examined systemically over 120 days for synthetic wastewater and municipal sewage treatment, respectively. Results showed that regular granules with good settling ability were developed and maintained throughout the experimental period. Regardless of the substrate type, AGS-MBR demonstrated a stable removal of carbon (85–95%) and nitrogen (50–55%) in long-term operation. In addition, the membrane fouling propensity is apparently lower in AGS-MBRs with no membrane cleaning for 4 months at a flux of 20 L m−2h−1. The filtration resistance analysis indicates that the main membrane resistance was caused by irreversible fouling in both of the reactors. Membrane foulant analysis indicates that proteins in excellular polymeric substances are more prone to be attached by the membrane of AGS-MBRs because of their hydrophobic nature. This study shows that AGS-MBR is effective and stable for municipal sewage treatment and reuse during long-term operation.

  • aerobic granular sludge
  • excellular polymeric substance
  • membrane bioreactor
  • membrane fouling
  • municipal sewage
  • First received 9 April 2017.
  • Accepted in revised form 1 June 2017.
  • © 2017 The Authors

This is an Open Access article distributed under the terms of the Creative Commons Attribution Licence (CC BY-NC-ND 4.0), which permits copying and redistribution for non-commercial purposes with no derivatives, provided the original work is properly cited (http://creativecommons.org/licenses/by-nc-nd/4.0/)

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Journal of Water Reuse and Desalination: 8 (2)
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Reactor performance and membrane fouling of a novel submerged aerobic granular sludge membrane bioreactor during long-term operation
Jianfeng Li, Yanjun Liu, Xiaoning Li, Fangqin Cheng
Journal of Water Reuse and Desalination Aug 2017, jwrd2017019; DOI: 10.2166/wrd.2017.019
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Reactor performance and membrane fouling of a novel submerged aerobic granular sludge membrane bioreactor during long-term operation
Jianfeng Li, Yanjun Liu, Xiaoning Li, Fangqin Cheng
Journal of Water Reuse and Desalination Aug 2017, jwrd2017019; DOI: 10.2166/wrd.2017.019

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Keywords

aerobic granular sludge
excellular polymeric substance
membrane bioreactor
membrane fouling
municipal sewage
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