Please use this identifier to cite or link to this item: https://doi.org/10.2166/wst.2006.162
Title: Effects of solid retention time on the performance of submerged anoxic/oxic membrane bioreactor
Authors: Ng, H.Y. 
Tan, T.W.
Ong, S.L. 
Toh, C.A.
Loo, Z.P.
Keywords: Denitrification
Fouling and sewage
MBR
Nitrification
SRT
Issue Date: 2006
Citation: Ng, H.Y., Tan, T.W., Ong, S.L., Toh, C.A., Loo, Z.P. (2006). Effects of solid retention time on the performance of submerged anoxic/oxic membrane bioreactor. Water Science and Technology 53 (6) : 7-13. ScholarBank@NUS Repository. https://doi.org/10.2166/wst.2006.162
Abstract: In this study, four similar bench-scale submerged Anoxic/Oxic Membrane Bioreactors (MBR) were used simultaneously to investigate the effects of solids retention time (SRT) on organic and nitrogen removal in MBR for treating domestic wastewater. COD removal efficiencies in all reactors were consistently above 94% under steady state conditions. Complete conversion of NH4 +-N to NO3 --N was readily achieved over a feed NH4 +-N concentration range of 30 to 50 mg/L. It was also observed that SRT did not significantly affect the nitrification in the MBR systems investigated. The average denitrification efficiencies for the 3, 5, 10 and 20 days SRT operations were 43.9, 32.6, 47.5 and 66.5%, respectively. In general, the average effluent nitrogen concentrations, which were mainly nitrate, were about 22.2, 27.6, 21.7 and 13.9 mg/L for the 3, 5, 10 and 20 days SRT systems, respectively. The rate of membrane fouling at 3 days SRT operation was more rapid than that observed at 5 days SRT. No fouling was noted in the 10 days and 20 days SRT systems during the entire period of study. © IWA Publishing 2006.
Source Title: Water Science and Technology
URI: http://scholarbank.nus.edu.sg/handle/10635/87496
ISSN: 02731223
DOI: 10.2166/wst.2006.162
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

7
checked on Sep 17, 2018

WEB OF SCIENCETM
Citations

8
checked on Sep 17, 2018

Page view(s)

43
checked on Jun 29, 2018

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.