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Modelling based design of a pilot-scale membrane bioreactor for combined nutrient removal from domestic wastewater

Tiranuntakul, M., Schneider, P. A., Jegatheesan, V. and Fracchia, H. L. 2006, Modelling based design of a pilot-scale membrane bioreactor for combined nutrient removal from domestic wastewater, in Proceedings of the World Water Congress, [IWA], [Beijing, China].

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Title Modelling based design of a pilot-scale membrane bioreactor for combined nutrient removal from domestic wastewater
Author(s) Tiranuntakul, M.
Schneider, P. A.
Jegatheesan, V.
Fracchia, H. L.
Conference name World Water Congress (5th : 2006 : Beijing, China)
Conference location Beijing, China
Conference dates 10-14 Sept. 2006
Title of proceedings Proceedings of the World Water Congress
Editor(s) [Unknown]
Publication date 2006
Conference series World Water Congress
Publisher [IWA]
Place of publication [Beijing, China]
Keyword(s) submerged membrane bioreactor
TUDP model
EPS biofouling model
shear turbulent model
oxygen transfer model
Summary A three stage-treatment of domestic wastewater including anaerobic, anoxic and aerobic phases is employed in this study while a clarifier unit is replaced with a submerged membrane in the aerobic unit. The effects of operational parameters on the performance of a pilot scale submerged membrane bioreactor (SMBR) namely hydraulic retention time (HRT), ratio of return activated sludge (QRS), ratio of internal recycle (QIR), solid retention time (SRT) and dissolved oxygen (DO) are evaluated by simulations, using a hybrid model composed of TUDP model, oxygen transfer model, biofouling model due to extra-cellular polymeric substances (EPS) and turbulent shear model. The results showed that anaerobic HRT of 3 hours, anoxic HRT of 6 hours, QRS of 20% and QIR of 300 % are satisfactory in obtaining a high removal efficiency (>90%) of COD, NH4-N, P04-P as well as a less sludge production. An increase of sludge production causes an increase in EPS, which fouls the membrane surface and increase the cleaning cycle of membrane. Operation of 5MBR system at 2 mg/I of DO and 30 days of SRT can extend the membrane cleaning cycle dramatically. The membrane cleaning cycle however is strongly dependent on the initial and terminal specific fluxes and displays inverse power relationships to those fluxes.
Language eng
Field of Research 099999 Engineering not elsewhere classified
Socio Economic Objective 970109 Expanding Knowledge in Engineering
HERDC Research category E2.1 Full written paper - non-refereed / Abstract reviewed
ERA Research output type E Conference publication
Persistent URL http://hdl.handle.net/10536/DRO/DU:30039585

Document type: Conference Paper
Collection: Faculty of Science, Engineering and Built Environment
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