Browse > Article

Effects of Biomass Concentration and Sludge Loading Rate on Bioactivity and Membrane Fouling in a Submerged Membrane Bioreactor System  

Tak Tae-Moon (서울대학교 생물자원공학부)
Bae Tae-Hyun (서울대학교 생물자원공학부)
Jang Gyoung-Gug (서울대학교 생물자원공학부)
Publication Information
Membrane Journal / v.14, no.4, 2004 , pp. 289-297 More about this Journal
Abstract
In this study, membranes were coupled to a sequencing batch reactor for simultaneous removal of organic matter and nitrogen, and the influences of MLSS (mixed liquor suspended solid) concentration and the sludge loading rate on membrane fouling and bioactivity were investigated. The amount of membrane fouling slightly increased with MLSS concentration at both non-aeration and aeration conditions, but effect of MLSS concentration was more significant at aeration condition. Although the effect of MLSS concentration on membrane fouling was found to be insignificant at low concentration level, extremely low sludge loading, which were generated by the maintenance of large amount of biomass in the reactor, caused severe membrane fouling, and air scouring effect decreased significantly in this condition. Specific bioactivity was constantly reduced as sludge loading rate decreased. In spite of high MLSS concentration over 17,000 mg/L, the activity of the reactor decreased at extremely low sludge loading rate presumably due to the lower oxygen transfer and the competition of biomass to deficient substrate.
Keywords
MBR (membrane bioreactor); membrane fouling; bioactivity; sludge loading rate;
Citations & Related Records
연도 인용수 순위
  • Reference
1 J. G. Choi, T. H. Bae, J. H. K, T. M Tak, and A. A. Randall, The behavior of membrane fouling initiation on the crossflow membrane bioreactor system J. Membr. Sci., 203, 103-113 (2002)
2 I. S. Chang and C. H. Lee, Membrane filtration characteristics in membrane-coupled activated sludge system the effect of physiological states of activated sludge on membrane fouling, Desalination, 120, 221-233 (1998)
3 W. T Lee, S. T. Kang, and H. S. Shin, Sludge characteristics and their contribution to micro-filtration in submerged membrane bioreactors, J. Membr. Sci., 216, 217-227 (2003)
4 T. H Bae, S. S. Han, and T. M Tak, Membrane sequencing batch reactor system for treatment of dairy industry wastewater, Process Biochemistry, 39, 221-231 (2003)
5 T. Ueda, K. Hata, and Y. Kikuoka, Treatment of domestic sewage from rural settlements by a membrane bioreactor, Water Sci. Technol., 34, 189-19 (1996)
6 J. Manem and R. Sanderson, Water Treatment Membrane Process, Chapter 17, AWWA Research Foundation, McGraw-Hill (1996)
7 J. M Lee, W. Y Ahn, and C. H Lee, Comparison of the filtration characteristics between attached and suspended growth microorganism in submerged membrane bioreactor, Water Res., 35, 2435-2445 (2001)   PUBMED
8 T. Ueda, K. Hata and Y. Kikuoka, Effects of aeration on suction pressure in a submerged membrane bioreactor, Water Res., 31, 489-494 (1997)
9 H. S. Shin and S. T. Kang, Characteristics and fates of soluble microbial products in ceramic membrane bioreactor at various sludge retention time, Water. Res., 37, 121-127 (2003)   PUBMED
10 E. B. Muller, A. H. Stouthamer, H. W. van Verseveld, and D. H. Eikelboom, Aerobic domestic waste water treatment in a pilot plant with complete sludge retention by cross-flow filtration, Water Res. 29,1179-1189 (1995)
11 R. Witzig, W. Manz, S. Rosenberger, V. Kruger, M. Kraume, and U. Szewzyk, Microbiological aspects of a bioreactor with submerged membranes for aerobic treatment of municipal wastewater, Water Res., 36, 394-402 (2002)   PUBMED
12 M. Mulder, Basic principles of membrane thchnology, Kluwer Academic Publishiers, London (1996)
13 E. Tardieu, A. Grasmick, V. Geaugey, and J. Manem, Influence of hydrodynamics on fouling velocity in a recirculated MBR for wastewater treatment, J. Membr. Sci., 156, 131-14 (1999)
14 S. P. Hong, T. H. Bae, T. M. Tak, S. Hong, and A. Randall, Fouling control in activated sludge submerged hollow fiber membrane bioreactor, Desalination, 143, 219-228 (2002)
15 C. W. Randall, J. L. Barnard, and H. D. Stensel, Design and retrofit of wastewater treatment plants for biological nutrient removal, Technomic Publishing, Lancaster, Pennsylvania (1992)
16 American Public Heaith Association, Standard Methods for the Examination of Water and Wastewater, 20th Ed., Washing D.C. (1998)
17 S. Rosenberger, V. Kruger, R. Witzig, W. Manz, U. Szewzyk, and M. Kraume, Performance of a bioreactor with submerged membranes for aerobic treatment of municipal waste water, Water Res., 36, 413-420 (2002)   PUBMED