Title
A new method for the evaluation of the reversible and irreversible fouling propensity of MBR mixed liquor A new method for the evaluation of the reversible and irreversible fouling propensity of MBR mixed liquor
Author
Faculty/Department
Faculty of Sciences. Bioscience Engineering
Publication type
article
Publication
Amsterdam ,
Subject
Biology
Engineering sciences. Technology
Source (journal)
Journal of membrane science. - Amsterdam
Volume/pages
323(2008) :1 , p. 185-192
ISSN
0376-7388
ISI
000258904600023
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
In this paper, a new fouling measurement method is presented as a pragmatic approach to determine a mixed liquor's fouling propensity. The MBR-VFM (VITO Fouling Measurement) uses a specific measurement protocol consisting of alternating filtration and physical cleaning steps, which enables the calculation of both the reversible and the irreversible fouling resistances. The MBR-VFM principle, set-up and measurement protocol are described as well as the evaluation of the fouling measurement method. Finally, the MBR-VFM was validated by comparing the fouling propensity measured on-line by the MBR-VFM in a lab-scale MBR with the fouling of the MBR membranes themselves. Our experiments indicated that the MBR-VFM can accurately measure fouling and that it can even be detected earlier than can be seen from the on-line filtration data of the lab-scale system itself. Furthermore, the differences measured in reversible and irreversible fouling seemed to be related to the observed impact of physical and chemical cleaning respectively. Therefore, the application of the MBR-VFM as an on-line sensor in an advanced control system, enabling the deployment of the measured fouling data for the control of membrane cleaning, seems feasible and will be tested in the near future.
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