Effect of sludge retention time on microbial behaviour in a submerged membrane bioreactor

2001 ◽  
Vol 36 (10) ◽  
pp. 1001-1006 ◽  
Author(s):  
Xia Huang ◽  
Ping Gui ◽  
Yi Qian
Keyword(s):  
Retention Time ◽  
Membrane Bioreactor ◽  
Submerged Membrane Bioreactor ◽  
Sludge Retention Time

Effect of 200 days' sludge retention time on performance of a pilot scale submerged membrane bioreactor for high strength industrial wastewater treatment

2006 ◽  
Vol 53 (11) ◽  
pp. 269-276 ◽  
Author(s):  
C.T. Hay ◽  
D.D. Sun ◽  
S.L. Khor ◽  
J.O. Leckie
Keyword(s):  
Retention Time ◽  
Industrial Wastewater ◽  
Membrane Bioreactor ◽  
Hydraulic Retention Time ◽  
High Strength ◽  
Pilot Scale ◽  
Submerged Membrane Bioreactor ◽  
Sludge Retention Time ◽  
Organic Removal ◽  
Sludge Concentration

A high strength industrial wastewater was treated using a pilot scale submerged membrane bioreactor (MBR) at a sludge retention time (SRT) of 200 d. The MBR was operated at a high sludge concentration of 20 g/L and a low F/M ratio of 0.11 during 300 d of operation. It was found that the MBR could achieve COD and TOC overall removal efficiencies at more than 99 and 98% TN removal. The turbidity of the permeate was consistently in the range of 0.123 to 0.136 NTU and colour254 absorbance readings varied from 0.0912 to 0.0962 a.u. cm−1. The sludge concentration was inversely proportional to the hydraulic retention time (HRT), yielded excellent organic removal and extremely low sludge production (0.0016 kgVSS/day).

Impact of prolonged sludge retention time on the performance of a submerged membrane bioreactor

Desalination ◽  
2007 ◽  
Vol 208 (1-3) ◽  
pp. 101-112 ◽  
Author(s):  
Darren Delai Sun ◽  
Swee Loong Khor ◽  
Choon Teck Hay ◽  
James O. Leckie
Keyword(s):  
Retention Time ◽  
Membrane Bioreactor ◽  
Submerged Membrane Bioreactor ◽  
Sludge Retention Time
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