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Bioresour Technol. 2018 Feb;249:402-409. doi: 10.1016/j.biortech.2017.09.209. Epub 2017 Oct 4.

Optimization of membrane unit location in a full-scale membrane bioreactor using computational fluid dynamics.

Author information

1
State Key Joint Laboratory of Environmental Simulation and Pollution Control, THU-Beijing Origin Water Joint Research Center for Environmental Membrane Technology, School of Environment, Tsinghua University, Beijing 100084, China.
2
College of Resource and Environment, University of Chinese Academy of Science, Beijing 100049, China.
3
State Key Joint Laboratory of Environmental Simulation and Pollution Control, THU-Beijing Origin Water Joint Research Center for Environmental Membrane Technology, School of Environment, Tsinghua University, Beijing 100084, China. Electronic address: xhuang@tsinghua.edu.cn.

Abstract

The location of membrane units in the membrane tank is a key factor in the construction of a full-scale membrane bioreactor (MBR), as it would greatly affect the hydrodynamics in the tank, which could in turn affect the membrane fouling rate while running. Yet, in most cases, these units were empirically installed in tanks, no theory guides were currently available for the design of a proper location. In this study, the hydrodynamics in the membrane tank of a full-scale MBR was simulated using computational fluid dynamics (CFD). Five indexes (iLu, iLa, iLb, iLint, iLw) were used to indicate the unit location, and each of them was discussed for their individual impact on the risk water velocity (v0.05) in the membrane unit region. An optimal design with all the indexes equaling 0.6 was proposed, and was found to have a promotion of 146.9% for v0.05.

KEYWORDS:

Computational fluid dynamics; Full-scale membrane bioreactor; Hydrodynamics; Membrane unit location

PMID:
29059623
DOI:
10.1016/j.biortech.2017.09.209
[Indexed for MEDLINE]

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