Criticality of flux and aeration for a hollow fiber membrane bioreactor

Monclus, Hector, Zacharias, Sebastian, Santos, Ana, Pidou, Marc and Judd, Simon (2010) Criticality of flux and aeration for a hollow fiber membrane bioreactor. Separation Science and Technology, 45 7: 956-961. doi:10.1080/01496391003666197

Author Monclus, Hector
Zacharias, Sebastian
Santos, Ana
Pidou, Marc
Judd, Simon
Title Criticality of flux and aeration for a hollow fiber membrane bioreactor
Journal name Separation Science and Technology   Check publisher's open access policy
ISSN 0149-6395
Publication date 2010
Sub-type Article (original research)
DOI 10.1080/01496391003666197
Volume 45
Issue 7
Start page 956
End page 961
Total pages 6
Editor D. J. Lee
X. Huang
Place of publication Philadelphia, PA, United States
Publisher Taylor & Francis
Language eng
Formatted abstract
A three-element microfiltration (MF) hollow fiber (HF) membrane module has been evaluated for treating municipal wastewater by an immersed membrane bioreactor (iMBR) based on a pilot-scale plant. The flux-step method, classically used to identify the critical flux, was compared with an aeration-step method conducted at the identified critical flux of 14.5 l m−2 h−1. It was found that the permeability of the central element was found to be higher, since the air stream imparted to the end elements was dissipated because there is no channel formed by the proximity of the neighboring elements. The aeration-step trials revealed the critical specific aeration demand for both intermittent and continuous aeration regimes to be lower than that applied to the critical flux-step experiments. This implies that the operating conditions identified for critical flux-step experiment are over conservative, corroborating results from previous reports, and that aeration stepping presents a more representative method for identifying sustainable operating conditions.
Keyword Aeration
Critical flux
Hollow fiber
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ
Additional Notes Special Issue: Membrane Fouling: Origin and Control Strategy: Part 2

Document type: Journal Article
Sub-type: Article (original research)
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