TY  - JOUR
N1  - cited By 7
N2  - A rotating biological contactor (RBC) offers a low energy footprint but suffers from performance instability, making it less popular for domestic wastewater treatment. This paper presents a study on an RBC integrated with membrane technology in which membrane filtration was used as a post-treatment step (RBCâ??ME) to achieve enhanced biological performance. The RBC and RBCâ??ME systems were operated under different hydraulic retention times (HRTs) of 12, 18, 24, and 48 h, and the effects of HRT on biological performance and effluent filterability were assessed. The results show that RBCâ??ME demonstrates superior biological performance than the standalone RBC. The RBCâ??ME bioreactor achieved 87.9 ± 3.2 of chemical oxygen demand (COD), 98.9 ± 1.1 ammonium, 45.2 ± 0.7 total nitrogen (TN), and 97.9 ± 0.1 turbidity removals. A comparison of the HRTs showed that COD and TN removal efficiency was the highest at 48 h, with 92.4 ± 2.4 and 48.6 ± 1.3 removal efficiencies, respectively. The longer HRTs also lead to better RBC effluent filterability. The steady-state permeability increased respectively by 2.4, 9.5, and 19.1 at HRTs of 18, 24, and 48 h, compared to 12 h. Our analysis of membrane fouling shows that fouling resistance decreased at higher HRTs. Overall, RBCâ??ME offered a promising alternative for traditional suspended growth processes with higher microbial activity and enhanced biological performance, which is in line with the requirements of sustainable development and environment-friendly treatment. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.
IS  - 13
KW  - filtration; membrane; performance assessment; wastewater treatment
ID  - scholars14790
TI  - Membrane filtration as post-treatment of rotating biological contactor for wastewater treatment
AV  - none
UR  - https://www.scopus.com/inward/record.uri?eid=2-s2.0-85109640383&doi=10.3390%2fsu13137287&partnerID=40&md5=3f023ae3f6cfac188fbea94423144883
A1  - Waqas, S.
A1  - Bilad, M.R.
A1  - Huda, N.
A1  - Harun, N.Y.
A1  - Md Nordin, N.A.H.
A1  - Shamsuddin, N.
A1  - Wibisono, Y.
A1  - Khan, A.L.
A1  - Roslan, J.
JF  - Sustainability (Switzerland)
VL  - 13
Y1  - 2021///
SN  - 20711050
PB  - MDPI AG
ER  -