Performance of an innovative step-feed An-M(A/O)-MBR process for nutrients removal

Yuan, Limei; Zhang, C.Y.; Xu, Jiasheng; Chu, Ju; Wang, B.B.; Wu, Qingzhong; Liu, J.T.

doi:10.1080/19443994.2014.940214

Cited by 4 publications

(2 citation statements)

References 18 publications

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“…However, some of the refractory compounds are not removed [24]. Improved removal of nitrogen and phosphorus may be achieved through reduced recirculation of DO from the aerobic to the anoxic tank [180,181]. In addition, high phosphorus removal can be achieved under optimized discharge of excess sludge [182].…”

Section: Enhanced Nutrient And/or Refractory Compound Removalmentioning

confidence: 99%

Membrane bioreactors – A review on recent developments in energy reduction, fouling control, novel configurations, LCA and market prospects

Krzemiński

Leverette

Malamis

et al. 2017

Journal of Membrane Science

378

156

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Membrane bioreactor (MBR) technology is considered a well-established, mature technology with many full-scale plants around the world treating municipal and industrial wastewater. However, membrane fouling and energy consumption still remain serious obstacles and challenges in the wider spread of the MBR technology. Therefore, considerable research and development efforts are still underway. Recent developments are primarily focused on aspects related to energy reduction, fouling control and novel configurations for enhanced process performance. This review addresses the recent work on the above mentioned aspects and it discusses the overall life cycle of MBRs and the market prospects for MBR technology. Novel MBR configurations and integrations with other technologies are also reviewed. Finally, the challenges that need to be addressed in order to facilitate market penetration of MBR technology are highlighted.

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Section: Enhanced Nutrient And/or Refractory Compound Removalmentioning

confidence: 99%

Membrane bioreactors – A review on recent developments in energy reduction, fouling control, novel configurations, LCA and market prospects

Krzemiński

Leverette

Malamis

et al. 2017

Journal of Membrane Science

378

156

View full text Add to dashboard Cite

show abstract

“…Step‐feed processes are promising technologies to enhance nutrient removal with the available organic matter in the influent. The influent is distributed into two or more anoxic zones during the process to offer electron donors for denitrification . However, the step‐feed process has operational difficulties due to (i) the complex influent distribution system, (ii) the redundant configuration and (iii) the unstable total nitrogen (TN) removal due to fluctuation of the influent composition.…”

Section: Introductionmentioning

confidence: 99%

Enhanced nitrogen removal and in situ microbial community in a two‐step feed oxic/anoxic/oxic‐membrane bioreactor (O/A/O‐MBR) process

Zhijia

Wang

et al. 2019

J of Chemical Tech & Biotech

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BACKGROUND The carbon in raw sewage can be reclaimed to reduce nitrate for the advanced denitrification in municipal wastewater treatment plants. A novel two‐step feed oxic/anoxic/oxic‐membrane bioreactor (O/A/O‐MBR) process was proposed to improve carbon‐use efficiency. RESULTS The flow distribution ratio (FDR), aeration mode and hydraulic loading were optimized to minimize the effluent total nitrogen (TN) concentration. When the FDR was 1:1, the intermittent aeration mode was 4 min air‐on/6 min air‐off and the influent flow was 5 L h−1, the nitrate removal efficiency in the post‐denitrification tank rose to 87.0% and the effluent TN concentration decreased below 15.0 mg L−1. The intermittent aeration strategy in the post oxic‐membrane tank effectively promoted TN loss. The 15N‐DNA based stable isotope probing experiment illustrated that Proteobacteria (35.09%), Actinobacteria (20.56%) and Chloroflexi (16.67%) dominated the intermittently aerated biofilm, and Nitrospira (9.06%) was the major nitrite oxidizing bacteria rather than Nitrobacter, representing a dominant simultaneous nitrification and denitrification pathway for nitrogen removal. CONCLUSION The integration of autotrophic nitrifying bacteria and heterotrophic denitrifying bacteria enhances the terminal TN removal under intermittent aeration mode. The two‐step feed O/A/O‐MBR process has the potential to solve carbon limitation in sewage wastewater treatment. © 2018 Society of Chemical Industry

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Enhanced removal of nitrogen and phosphorus from expressway service area wastewater using step-feed multi-stage Anoxic/Oxic membrane bioreactor optimization process

Xia,

Bai,

Yang

et al. 2025

Journal of Water Process Engineering

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Performance of an innovative step-feed An-M(A/O)-MBR process for nutrients removal

Cited by 4 publications

References 18 publications

Membrane bioreactors – A review on recent developments in energy reduction, fouling control, novel configurations, LCA and market prospects

Membrane bioreactors – A review on recent developments in energy reduction, fouling control, novel configurations, LCA and market prospects

Enhanced nitrogen removal and in situ microbial community in a two‐step feed oxic/anoxic/oxic‐membrane bioreactor (O/A/O‐MBR) process

Enhanced removal of nitrogen and phosphorus from expressway service area wastewater using step-feed multi-stage Anoxic/Oxic membrane bioreactor optimization process

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