Effects of structural vulnerability of flat-sheet membranes on fouling development in continuous submerged membrane bioreactors.
Extracellular polymeric substance (EPS)
Flat-sheet membrane
Fouling
Membrane bioreactor (MBR)
Membrane material
Membrane module
Journal
Bioresource technology
ISSN: 1873-2976
Titre abrégé: Bioresour Technol
Pays: England
ID NLM: 9889523
Informations de publication
Date de publication:
May 2020
May 2020
Historique:
received:
23
12
2019
revised:
08
02
2020
accepted:
11
02
2020
pubmed:
24
2
2020
medline:
13
3
2020
entrez:
24
2
2020
Statut:
ppublish
Résumé
The relationship between fouling development in a continuous laboratory-scale membrane reactor (MBR/Lab) and the membrane material was investigated using flat-sheet membranes prepared from four materials (polyvinylidene difluoride (PVDF), polyethersulfone, chlorinated polyvinyl chloride, and polytetrafluoroethylene). Further, the characteristics of the suspension liquid in MBR/Lab were compared with those of samples from actual wastewater treatment plants. It was found that, in addition to the membrane material's own characteristics, the structural vulnerability of the membranes had a determining effect on fouling development. The PVDF membrane showed the highest transmembrane pressure during MBR operation and its surface experienced significant damage because of the shearing stress caused by aeration, resulting in the penetration of the membrane by the fouling compounds. The characteristics of suspension liquid in MBR/Lab were almost similar to those in the MBR at a night-soil treatment plant and the aeration tank of a sewage treatment plant.
Identifiants
pubmed: 32088629
pii: S0960-8524(20)30284-4
doi: 10.1016/j.biortech.2020.123015
pii:
doi:
Substances chimiques
Membranes, Artificial
0
Sewage
0
Waste Water
0
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
123015Informations de copyright
Copyright © 2020 Elsevier Ltd. All rights reserved.
Déclaration de conflit d'intérêts
Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.