Comparative study of suspended and attached growth in membrane bioreactors for wastewater treatment

The performance of laboratory scale experiments in treating synthetic domestic wastewater were conducted with suspended growth (SG) (without media) and attached growth (AG) (with moving media) membrane bioreactors (MBRs). The aim of this study is to compare fouling and the treatment performance of a...

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Published in:Water and environment journal : WEJ 2020-12, Vol.34 (S1), p.273-289
Main Authors: Ibrahim, Rabialtu Sulihah, Sabeen, Ali Hussein, Zainon Noor, Zainura, Ahmad Mutamim, Noor Sabrina
Format: Article
Language:English
Subjects:
Ammonia
attached growth MBR
Bioreactors
Chemical oxygen demand
Cleaning
Comparative analysis
Comparative studies
Domestic wastewater
Fouling
Growth media
membrane bioreactor
membrane fouling
Membrane processes
Membranes
Polyethylenes
Removal
Wastewater treatment
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container_end_page 289
container_issue S1
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container_title Water and environment journal : WEJ
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creator Ibrahim, Rabialtu Sulihah
Sabeen, Ali Hussein
Zainon Noor, Zainura
Ahmad Mutamim, Noor Sabrina
description The performance of laboratory scale experiments in treating synthetic domestic wastewater were conducted with suspended growth (SG) (without media) and attached growth (AG) (with moving media) membrane bioreactors (MBRs). The aim of this study is to compare fouling and the treatment performance of attached growth membrane bioreactor (AGMBR) with suspended growth membrane bioreactor (SGMBR) by assessing the removal of chemical oxygen demand (COD), nitrate, nitrite and ammonia. The finding shows that with 10% of attached growth media, average COD, nitrate, nitrite and nitrogen ammonia removal efficiency for AGMBR were found to be greater than the SGMBR system. AGMBR significantly increased critical flux, (Jc) up to 48 L m−2 h−1, hence producing low final transmembrane pressure (TMP) after cleaning and decreased the total resistance at 5.69 × 1011 m−1. Addition of cylindrical polythene media resulted in slow TMP increment that prolonged filtration process. In conclusion, AGMBR gave a better treatment performance and could minimize the membrane fouling problem.
doi_str_mv 10.1111/wej.12525
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subjects Ammonia
attached growth MBR
Bioreactors
Chemical oxygen demand
Cleaning
Comparative analysis
Comparative studies
Domestic wastewater
Fouling
Growth media
membrane bioreactor
membrane fouling
Membrane processes
Membranes
Polyethylenes
Removal
Wastewater treatment
title Comparative study of suspended and attached growth in membrane bioreactors for wastewater treatment
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