Microbial community structure of membrane fouling film in an intermittently and continuously aerated submerged membrane bioreactor treating domestic wastewater

2004 ◽  
Vol 49 (2) ◽  
pp. 255-261 ◽  
Author(s):  
B.-R. Lim ◽  
K.-H. Ahn ◽  
P. Songprasert ◽  
J.W. Cho ◽  
S.H. Lee
Keyword(s):  
Community Structure ◽  
Microbial Community ◽  
Microbial Community Structure ◽  
Membrane Fouling ◽  
Membrane Bioreactor ◽  
Domestic Wastewater ◽  
Experimental Results ◽  
Submerged Membrane Bioreactor ◽  
Membrane Biofouling ◽  
Nocardia Sp

There was an observable difference in microbial community structure between suspended microorganisms and membrane biofouling film in intermittently and continuously aerated SMBRs. The dominant quinone type of membrane biofouling film in an intermittently aerated SMBR was ubiquinone (UQs)-8, -10 followed by menaquinone (MKs)-8(H4) and -8(H2). But that of the continuously aerated SMBR was UQs-10, -8 followed by MKs-6 and -8(H4). The experimental results also showed that the conditions of an intermittently aerated SMBR may contribute to biofouling by Pseudomonas, Moraxella, Vibrio (quinone type UQ-8), Staphylococcus warneri (quinone type MK-7), Micrococcus sp. (quinone type MK-8(H2)) and Nocardia sp. (quinone type MK-8(H4)), but biofouling in a continuously aerated SMBR may be due to Paracoccus sp. (quinone type: UQ-10) and Flavobacterium species (quinone type: MK-6). The microbial diversities in the intermittently aerated SMBR were 10.9 and 9.4 for biofouling film and suspended microorganisms, respectively. For the continuously aerated SMBR, the results were 10.4 and 10.5 for biofouling film and suspended microorganisms, respectively.

Change of microbial community structure by respiratory quinone profile at intermittently aerated membrane bioreactor

2004 ◽  
Vol 49 (5-6) ◽  
pp. 459-465 ◽  
Author(s):  
P. Songprasert ◽  
B.-R. Lim ◽  
K.-H. Ahn
Keyword(s):  
Community Structure ◽  
Microbial Community ◽  
Microbial Community Structure ◽  
Membrane Bioreactor ◽  
Domestic Wastewater ◽  
Time Interval ◽  
Respiratory Quinone ◽  
Aerobic Conditions ◽  
Submerged Membrane Bioreactor ◽  
Quinone Profile

In the present study, the microbial community structure in an intermittently aerated submerged membrane bioreactor treating domestic wastewater was observed using the respiratory quinone profiles. The effects of different time interval for the aerobic and anoxic period on microbial community structure were examined with 60/90 min (Step 1) and 90/60 min (Step 2) as anoxic/aerobic periods. There was an observable slight difference in microbial community structure between Step 1 and Step 2 in the submerged membrane bioreactor. The dominant quinone types for Step 1 at both anoxic and aerobic conditions were UQ-8 followed by UQ-10 and MK-6, but those for Step 2 were UQ-8, MK-6 and MK-10(H4). The microbial diversity of Step 1 and Step 2 based on the composition of all quinones was 10.6Ð11.7 and 13.3Ð13.0 for anoxic and aerobic conditions, respectively. The present results suggest that the introduction of intermittent aeration into the submerged membrane bioreactor has little influence on the bacterial community structure.

Microbial community structure in an intermittently aerated submerged membrane bioreactor treating domestic wastewater

Desalination ◽  
2004 ◽  
Vol 161 (2) ◽  
pp. 145-153 ◽  
Author(s):  
Byung-Ran Lim ◽  
Kyu-Hong Ahn ◽  
Piyaporn Songprasert ◽  
Seung-Hwan Lee ◽  
Myoung-Jin Kim
Keyword(s):  
Community Structure ◽  
Microbial Community ◽  
Microbial Community Structure ◽  
Membrane Bioreactor ◽  
Domestic Wastewater ◽  
Submerged Membrane Bioreactor

Microbial community and antibiotic resistance profiles of biomass and effluent are distinctly affected by antibiotic addition to an anaerobic membrane bioreactor

2020 ◽  
Vol 6 (3) ◽  
pp. 724-736 ◽  
Author(s):  
Ali Zarei-Baygi ◽  
Moustapha Harb ◽  
Phillip Wang ◽  
Lauren B. Stadler ◽  
Adam L. Smith
Keyword(s):  
Antibiotic Resistance ◽  
Community Structure ◽  
Microbial Community ◽  
Resistance Gene ◽  
Microbial Community Structure ◽  
Membrane Bioreactor ◽  
Antibiotic Resistance Gene ◽  
Domestic Wastewater ◽  
Bench Scale ◽  
Anaerobic Membrane Bioreactor

A bench-scale AnMBR was operated for the treatment of domestic wastewater containing antibiotics and evaluated microbial community structure and antibiotic resistance gene dynamics in both the biomass and effluent.

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