An increase in sludge loading rate induces gel fouling in membrane bioreactors treating real sewage.
Biofilm
Membrane fouling
SRT change
Soluble microbial products
Journal
Chemosphere
ISSN: 1879-1298
Titre abrégé: Chemosphere
Pays: England
ID NLM: 0320657
Informations de publication
Date de publication:
Dec 2022
Dec 2022
Historique:
received:
27
06
2022
revised:
29
08
2022
accepted:
17
09
2022
pubmed:
4
10
2022
medline:
27
10
2022
entrez:
3
10
2022
Statut:
ppublish
Résumé
The main objective of this study was to investigate the cause of gel fouling in membrane bioreactors (MBRs) treating real sewage in terms of soluble microbial products (SMPs) and microbial aspects. Two anoxic/oxic-MBRs were operated as the control reactor (S1) and the sludge loading rate increased reactor (S2). The reactors were operated under low-temperature around 11 °C conditions. Membrane permeability substantially decreased in S2, and gel layer biofilm was formed on membrane surface. In contrast, the permeability of S1 gradually decreased and cake layer formed. When gel fouling occurred, the protein and polysaccharide of SMP in S2 were 47 and 23 mg L
Identifiants
pubmed: 36185000
pii: S0045-6535(22)03050-8
doi: 10.1016/j.chemosphere.2022.136557
pii:
doi:
Substances chimiques
Sewage
0
Membranes, Artificial
0
Carbon
7440-44-0
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
136557Informations de copyright
Copyright © 2022 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.