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Cho, Jaeweon
OWIELAB(Organic-Water Interface Engineering Laboratory)
Research Interests
  • Convergence of Science and Arts, Feces Standard Money (FSM), Water & Energy

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Steady-state modeling of bio-fouling potentials with respect to the biological kinetics in the submerged membrane bioreactor (SMBR)

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Title
Steady-state modeling of bio-fouling potentials with respect to the biological kinetics in the submerged membrane bioreactor (SMBR)
Author
Jang, NamjungRen, XianghaoCho, JaeweonKim, In S.
Keywords
Bio-fouling; Biological kinetics; EPS; MBR; SMP
Issue Date
2006-11
Publisher
ELSEVIER SCIENCE BV
Citation
JOURNAL OF MEMBRANE SCIENCE, v.284, no.1-2, pp.352 - 360
Abstract
A mathematical model was developed for predicting the membrane bio-fouling potential as the operation conditions in the submerged membrane bioreactor (SMBR). Mass balance equations were computed, in terms of biological kinetics, for the production and degradation of extracellular polymeric substances (EPS) and soluble microbial products (SMP). The modified fouling index (MFI) was used for the prediction of bio-fouling potentials divided by soluble materials (MFISol) and suspended solids (MFISS) at the steady-state. The effect of changes in the solids retention time (SRT) on the bio-fouling potentials was more sensitive than that of the hydraulic retention time (HRT). The MFISol and MFISS were found to increase and decrease, respectively, with increases in the SRT. The simulation results showed that an increased sludge age could decrease the microbial activity in the MBR. The MFISol was slightly decreased with increase in the HRT, which was due to the reduction of the concentrations of SMP. Generally, the contribution of MFISS to bio-fouling was relatively low compared to that of MFISol under given conditions. The simulation results were calculated using the given assumptions and limited conditions only. It was suggested that consideration of the parameter changes caused by the properties of biological flocs, influent, membrane and microorganism community would be required to better predict the bio-fouling potentials in the SMBR. (c) 2006 Elsevier B.V. All rights reserved
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DOI
10.1016/j.memsci.2006.08.001
ISSN
0376-7388
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UEE_Journal Papers
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