Impact of acclimation methods on microbial communities and performance of anaerobic fluidized bed membrane bioreactors

2016 ◽  
Vol 2 (6) ◽  
pp. 1041-1048 ◽  
Author(s):  
Nicole LaBarge ◽  
Yaoli Ye ◽  
Kyoung-Yeol Kim ◽  
Yasemin Dilsad Yilmazel ◽  
Pascal E. Saikaly ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Microbial Communities ◽  
Fluidized Bed ◽  
Membrane Bioreactor ◽  
Domestic Wastewater ◽  
Granular Activated Carbon ◽  
Membrane Bioreactors ◽  
And Performance

Granular activated carbon was acclimated to different substrates, and then used in an anaerobic fluidized bed membrane bioreactor (AFMBR) to treat diluted domestic wastewater. Acetate acclimation produced the best results.

Influence of activated carbon on performance and microbial communities in the treatment of solvent pollutant mixtures in a continuous stirred tank reactor

2020 ◽  
Vol 6 (5) ◽  
pp. 1445-1455
Author(s):  
Pablo Ferrero ◽  
Marta Izquierdo ◽  
Francisco Javier Álvarez-Hornos ◽  
Josep Manuel Penya-Roja ◽  
Vicente Martínez-Soria
Keyword(s):  
Activated Carbon ◽  
Microbial Communities ◽  
Granular Activated Carbon ◽  
Stirred Tank ◽  
Continuous Stirred Tank Reactor ◽  
Carbon Addition ◽  
Stirred Tank Reactor ◽  
Tank Reactor ◽  
Continuous Stirred Tank ◽  
Pollutant Mixtures

Granular activated carbon addition could promote specific microorganisms which favour the anaerobic removal of non-readily biodegradable solvent compounds through their influence on the degradation (methanogenesis) of intermediates.

Membrane fouling and performance evaluation of conventional membrane bioreactor (MBR), moving biofilm MBR and oxic/anoxic MBR

2014 ◽  
Vol 69 (7) ◽  
pp. 1403-1409 ◽  
Author(s):  
Sher Jamal Khan ◽  
Aman Ahmad ◽  
Muhammad Saqib Nawaz ◽  
Nicholas P. Hankins
Keyword(s):  
Membrane Fouling ◽  
Extracellular Polymeric Substances ◽  
Water Flux ◽  
Oxygen Demand ◽  
Domestic Wastewater ◽  
Membrane Bioreactors ◽  
Nitrogen And Phosphorus ◽  
Biofilm Carrier ◽  
Cake Layer ◽  
And Performance

In this study, three laboratory scale submerged membrane bioreactors (MBRs) comprising a conventional MBR (C-MBR), moving bed MBR (MB-MBR) and anoxic-oxic MBR (A/O-MBR) were continuously operated with synthesized domestic wastewater (chemical oxygen demand, COD = 500 mg/L) for 150 days under similar operational and environmental conditions. Kaldnes® plastic media with 20% dry volume was used as a biofilm carrier in the MB-MBR and A/O-MBR. The treatment performance and fouling propensity of the MBRs were evaluated. The effect of cake layer formation in all three MBRs was almost the same. However, pore blocking caused a major difference in the resultant water flux. The A/O-MBR showed the highest total nitrogen and phosphorus (PO4-P) removal efficiencies of 83.2 and 69.7%, respectively. Due to the high removal of nitrogen, fewer protein contents were found in the soluble and bound extracellular polymeric substances (EPS) of the A/O-MBR. Fouling trends of the MBRs showed 12, 14 and 20 days filtration cycles for C-MBR, MB-MBR and A/O-MBR, respectively. A 25% reduction of the soluble EPS and a 37% reduction of the bound EPS concentrations in A/O-MBR compared with C-MBR was a major contributing factor for fouling retardation and the enhanced filtration capacity of the A/O-MBR.

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