Numerical simulation of scaling-up for AEC-MBRs regarding membrane module configurations and cyclic aeration modes

Min Yang; Mengmeng Liu; Dawei Yu; Jiaxi Zheng; Zhichao Wu; Shuguang Zhao; Jiang Chang; Yuansong Wei

doi:10.1016/j.biortech.2017.09.027

Numerical simulation of scaling-up for AEC-MBRs regarding membrane module configurations and cyclic aeration modes

Min Yang
, Mengmeng Liu
, Dawei Yu
, Jiaxi Zheng
, Zhichao Wu
, Shuguang Zhao
, Jiang Chang
, Yuansong Wei^*

^*Corresponding author for this work

CAS - Research Center for Eco-Environmental Sciences
University of Chinese Academy of Sciences
Tongji University
Beijing Drainage Group Co., Ltd

Research output: Contribution to journal › Article › peer-review

22 Scopus citations

Abstract

The airlift external circulation membrane bioreactors (AEC-MBRs) have been attracting attentions due to their capabilities of nutrient removal with lower energy demand and smaller footprint. The gap between laboratory study and full-scale AEC-MBRs regarding hydrodynamics needs to be addressed. In this study, impacts of seven design variables and cyclic aeration modes on hydrodynamics were studied for the scale-up of AEC-MBRs with computational fluid dynamics modelling. The results demonstrated that shear stress on membranes was 14.7% higher in full-scale MBR with only 15% of SAD_m of lab-scale MBR while it showed an overall higher sensitivity to the design variables in lab-scale MBRs. Cyclic aeration modes created a sinusoidal pattern of shear stress and generated more fluctuations and were expected to reduce more irreversible fouling. When a shifting frequency of 5 s/5 s was applied in AEC-MBR, 50% of aeration energy was reduced and yield water with good quality was harvested.

Original language	English
Pages (from-to)	933-943
Number of pages	11
Journal	Bioresource Technology
Volume	245
DOIs	https://doi.org/10.1016/j.biortech.2017.09.027
State	Published - 2017
Externally published	Yes

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

Computational fluid dynamics
Cyclic aeration
Membrane bioreactor
Scale-up
Simulation

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10.1016/j.biortech.2017.09.027

Cite this

@article{18c3e5f3083142fb80e1a9a3e7188f9e,

title = "Numerical simulation of scaling-up for AEC-MBRs regarding membrane module configurations and cyclic aeration modes",

abstract = "The airlift external circulation membrane bioreactors (AEC-MBRs) have been attracting attentions due to their capabilities of nutrient removal with lower energy demand and smaller footprint. The gap between laboratory study and full-scale AEC-MBRs regarding hydrodynamics needs to be addressed. In this study, impacts of seven design variables and cyclic aeration modes on hydrodynamics were studied for the scale-up of AEC-MBRs with computational fluid dynamics modelling. The results demonstrated that shear stress on membranes was 14.7\% higher in full-scale MBR with only 15\% of SADm of lab-scale MBR while it showed an overall higher sensitivity to the design variables in lab-scale MBRs. Cyclic aeration modes created a sinusoidal pattern of shear stress and generated more fluctuations and were expected to reduce more irreversible fouling. When a shifting frequency of 5 s/5 s was applied in AEC-MBR, 50\% of aeration energy was reduced and yield water with good quality was harvested.",

keywords = "Computational fluid dynamics, Cyclic aeration, Membrane bioreactor, Scale-up, Simulation",

author = "Min Yang and Mengmeng Liu and Dawei Yu and Jiaxi Zheng and Zhichao Wu and Shuguang Zhao and Jiang Chang and Yuansong Wei",

note = "Publisher Copyright: {\textcopyright} 2017 Elsevier Ltd",

year = "2017",

doi = "10.1016/j.biortech.2017.09.027",

language = "英语",

volume = "245",

pages = "933--943",

journal = "Bioresource Technology",

issn = "0960-8524",

publisher = "Elsevier Ltd",

}

TY - JOUR

T1 - Numerical simulation of scaling-up for AEC-MBRs regarding membrane module configurations and cyclic aeration modes

AU - Yang, Min

AU - Liu, Mengmeng

AU - Yu, Dawei

AU - Zheng, Jiaxi

AU - Wu, Zhichao

AU - Zhao, Shuguang

AU - Chang, Jiang

AU - Wei, Yuansong

PY - 2017

Y1 - 2017

N2 - The airlift external circulation membrane bioreactors (AEC-MBRs) have been attracting attentions due to their capabilities of nutrient removal with lower energy demand and smaller footprint. The gap between laboratory study and full-scale AEC-MBRs regarding hydrodynamics needs to be addressed. In this study, impacts of seven design variables and cyclic aeration modes on hydrodynamics were studied for the scale-up of AEC-MBRs with computational fluid dynamics modelling. The results demonstrated that shear stress on membranes was 14.7% higher in full-scale MBR with only 15% of SADm of lab-scale MBR while it showed an overall higher sensitivity to the design variables in lab-scale MBRs. Cyclic aeration modes created a sinusoidal pattern of shear stress and generated more fluctuations and were expected to reduce more irreversible fouling. When a shifting frequency of 5 s/5 s was applied in AEC-MBR, 50% of aeration energy was reduced and yield water with good quality was harvested.

AB - The airlift external circulation membrane bioreactors (AEC-MBRs) have been attracting attentions due to their capabilities of nutrient removal with lower energy demand and smaller footprint. The gap between laboratory study and full-scale AEC-MBRs regarding hydrodynamics needs to be addressed. In this study, impacts of seven design variables and cyclic aeration modes on hydrodynamics were studied for the scale-up of AEC-MBRs with computational fluid dynamics modelling. The results demonstrated that shear stress on membranes was 14.7% higher in full-scale MBR with only 15% of SADm of lab-scale MBR while it showed an overall higher sensitivity to the design variables in lab-scale MBRs. Cyclic aeration modes created a sinusoidal pattern of shear stress and generated more fluctuations and were expected to reduce more irreversible fouling. When a shifting frequency of 5 s/5 s was applied in AEC-MBR, 50% of aeration energy was reduced and yield water with good quality was harvested.

KW - Computational fluid dynamics

KW - Cyclic aeration

KW - Membrane bioreactor

KW - Scale-up

KW - Simulation

UR - https://www.scopus.com/pages/publications/85029542496

U2 - 10.1016/j.biortech.2017.09.027

DO - 10.1016/j.biortech.2017.09.027

M3 - 文章

C2 - 28938512

AN - SCOPUS:85029542496

SN - 0960-8524

VL - 245

SP - 933

EP - 943

JO - Bioresource Technology

JF - Bioresource Technology

ER -

Numerical simulation of scaling-up for AEC-MBRs regarding membrane module configurations and cyclic aeration modes

Abstract

UN SDGs

Keywords

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