Impact of different inoculum sources on the performance of membrane bioreactors for municipal wastewater treatment: Dynamic membrane versus ultrafiltration membrane

In this study, impact of different inoculum on the performance of membrane bioreactors (MBRs) was investigated for municipal wastewater treatment. Waste sludges from a conventional activated sludge (CAS) system and a high-rate activated sludge (HRAS) system were used as inoculums at Stage-1 and Stag...

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Bibliographic Details
Published in:Journal of water process engineering 2022-04, Vol.46, p.102549, Article 102549
Main Authors: Isik, Onur, Cengiz, Ali Izzet, Abdelrahman, Amr Mustafa, Ozcelik, Kadir, Yuksekdag, Ayse, Koyuncu, Ismail, Ersahin, Mustafa Evren, Ozgun, Hale, Demir, Ibrahim
Format: Article
Language:English
Subjects:
Dynamic membrane
Hollow fiber
Inoculum sludge
Membrane bioreactor
Municipal wastewater
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Summary:In this study, impact of different inoculum on the performance of membrane bioreactors (MBRs) was investigated for municipal wastewater treatment. Waste sludges from a conventional activated sludge (CAS) system and a high-rate activated sludge (HRAS) system were used as inoculums at Stage-1 and Stage-2, respectively. A commercial ultrafiltration (UF) membrane was tested in parallel with a low-cost polyester hollow fiber support material (dynamic membrane, DM). UF and DM membranes were operated for 67 days at a flux of 8 L/m2·h at each stage. High chemical oxygen demand (COD) and soluble COD (sCOD) removal efficiencies (>86% and >74%, respectively), low mixed liquor suspended solids (MLSS) concentration (
ISSN:2214-7144
2214-7144
DOI:10.1016/j.jwpe.2021.102549