CFD modelling of uneven flows behaviour in flat-sheet membrane bioreactors: From bubble generation to shear stress distribution

Liu, Xuefei; Wang, Yuan; Shi, Yuerong; Li, Qiyuan; Dai, Pingping; Guan, Jing; Waite, T. David; Leslie, Greg

doi:10.1016/j.memsci.2018.10.040

Cited by 37 publications

(15 citation statements)

References 30 publications

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“…Liu, Wang, et al (2019) investigated fouling caused by uneven bubble distribution across a flat sheet membrane surface with a computational fluid dynamics (CFD) model validated with experimental measurements. The CFD model evaluated the effect of bubble distribution and shear stress with respect to aeration nozzle height.…”

Section: Modelingmentioning

confidence: 99%

Membrane processes

Arabi¹,

Pellegrin

Aguinaldo

et al. 2020

Water Environment Research

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This literature review provides a review for publications in 2018 and 2019 and includes information membrane processes findings for municipal and industrial applications. This review is a subsection of the annual Water Environment Federation literature review for Treatment Systems section. The following topics are covered in this literature review: industrial wastewater and membrane. Bioreactor (MBR) configuration, membrane fouling, design, reuse, nutrient removal, operation, anaerobic membrane systems, microconstituents removal, membrane technology advances, and modeling. Other subsections of the Treatment Systems section that might relate to this literature review include the following: Biological Fixed-Film Systems, Activated Sludge, and Other Aerobic Suspended Culture Processes, Anaerobic Processes, and Water Reclamation and Reuse. This publication might also have related information on membrane processes: Industrial Wastes, Hazardous Wastes, and Fate and Effects of Pollutants.

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Section: Modelingmentioning

confidence: 99%

Membrane processes

Arabi¹,

Pellegrin

Aguinaldo

et al. 2020

Water Environment Research

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“…Flat-sheet membrane bioreactor has been developed for long times, which improved the processing technology and the stability [47]. It was found to be more effective for the removal of COD, NH 4 + -N, and phosphorus (P) [36].…”

Section: Role Of Microbial Electrocatalysis Systems Coupled With Mmentioning

confidence: 99%

A Review on Microbial Electrocatalysis Systems Coupled with Membrane Bioreactor to Improve Wastewater Treatment

et al. 2019

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Microbial electrocatalysis is an electro reaction that uses microorganisms as a biocatalyst, mainly including microbial electrolytic cells (MEC) and microbial fuel cells (MFC), which has been used for wastewater treatment. However, the low processing efficiency is the main drawback for its practical application and the additional energy input of MEC system results in high costs. Recently, MFC/MEC coupled with other treatment processes, especially membrane bioreactors (MBR), has been used for high efficiency and low-cost wastewater treatment. In these systems, the wastewater treatment efficiency can be improved after two units are operated and the membrane fouling of MBR can also be alleviated by the electric energy that was generated in the MFC. In addition, the power output of MFC can also reduce the energy consumption of microbial electrocatalysis systems. This review summarizes the recent studies about microbial electrocatalysis systems coupled with MBR, describing the combination types and microorganism distribution, the advantages and limitations of the systems, and also addresses several suggestions for the future development and practical applications.

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“…Aeration 11–13 and crossflow 14–16 are the most commonly used membrane cleaning methods in the current membrane process, and their optimization is ongoing. They mainly reduce the concentration polarization by controlling the shear force of the membrane surface 17,18 and reducing solid particle deposition 19,20 to mitigate membrane fouling, whose essence is to influence particle migrations on the membrane surface and then affect the membrane fouling in the membrane system.…”

Section: Introductionmentioning

confidence: 99%

Assessment of hydraulic performance and fouling control caused by pulse flow in hollow fiber membrane module

et al. 2022

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To shed light on the effect of pulse flow on shear force and membrane fouling, the pulse frequency and flow velocity based on fiber Bragg grating (FBG) sensing technology were studied. The results show that there is a threshold for this synergy between the pulse frequency and flow velocity, which forms more easily at a high pulse frequency and low flow velocity. Moreover, the transition from pulse flow to continuous flow affects the shear force distribution with the membrane module height. Besides, at the same volumetric flow, Re gradually reaches a plateau as the pulse frequency increases from 1 to 5 Hz, and the membrane fouling control has a better flux recovery, which can reach a maximum of 28.89%. Finally, the results also show that the combined effect of high pulse frequency and low flow velocity would be higher than that of low pulse frequency and high flow velocity.

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CFD modelling of uneven flows behaviour in flat-sheet membrane bioreactors: From bubble generation to shear stress distribution

Cited by 37 publications

References 30 publications

Membrane processes

Membrane processes

A Review on Microbial Electrocatalysis Systems Coupled with Membrane Bioreactor to Improve Wastewater Treatment

Assessment of hydraulic performance and fouling control caused by pulse flow in hollow fiber membrane module

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