Effect of imposed flux on fouling behavior in high rate membrane bioreactor

M. A. H. Johir; J. George; S. Vigneswaran; J. Kandasamy; A. Sathasivan; A. Grasmick

doi:10.1016/j.biortech.2012.02.107

Effect of imposed flux on fouling behavior in high rate membrane bioreactor

M. A. H. Johir, J. George, S. Vigneswaran, J. Kandasamy, A. Sathasivan, A. Grasmick

Research output: Contribution to journal › Article › peer-review

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Abstract

The influence of imposed flux and aeration rates on membrane fouling in a submerged membrane bioreactor was studied. The experiments were conducted at four imposed fluxes and three aeration rates. The effect of flux on the reduction of membrane fouling was much higher than that caused by aeration rate. A lower flux of 20 L/m2 h produced 75 times more water than a higher flux of 40 L/m2 h with an aeration rate of 2 L/min. Low flux showed slightly higher removal of NH4-N and 93-96% removal of dissolved organic matter and chemical oxygen demand. Imposed flux also had a significant effect on the composition of organics present in the soluble microbial product (SMP) and extracellular polymeric substances (EPS). At a higher flux, both SMP and EPS had organics of high molecular weight (MW) of around 48 kDa as well as lower MW organics below 200 Da.

Original language	English
Pages (from-to)	42-49
Number of pages	8
Journal	Bioresources Technology
Volume	122
DOIs	https://doi.org/10.1016/j.biortech.2012.02.107
Publication status	Published - 2012

Keywords

biofilms
fouling
imposed flux
membrane bioreactor
membranes (technology)
microbial polymers
wastewater treatment

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10.1016/j.biortech.2012.02.107

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title = "Effect of imposed flux on fouling behavior in high rate membrane bioreactor",

abstract = "The influence of imposed flux and aeration rates on membrane fouling in a submerged membrane bioreactor was studied. The experiments were conducted at four imposed fluxes and three aeration rates. The effect of flux on the reduction of membrane fouling was much higher than that caused by aeration rate. A lower flux of 20 L/m2 h produced 75 times more water than a higher flux of 40 L/m2 h with an aeration rate of 2 L/min. Low flux showed slightly higher removal of NH4-N and 93-96% removal of dissolved organic matter and chemical oxygen demand. Imposed flux also had a significant effect on the composition of organics present in the soluble microbial product (SMP) and extracellular polymeric substances (EPS). At a higher flux, both SMP and EPS had organics of high molecular weight (MW) of around 48 kDa as well as lower MW organics below 200 Da.",

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author = "Johir, {M. A. H.} and J. George and S. Vigneswaran and J. Kandasamy and A. Sathasivan and A. Grasmick",

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TY - JOUR

T1 - Effect of imposed flux on fouling behavior in high rate membrane bioreactor

AU - Johir, M. A. H.

AU - George, J.

AU - Vigneswaran, S.

AU - Kandasamy, J.

AU - Sathasivan, A.

AU - Grasmick, A.

PY - 2012

Y1 - 2012

N2 - The influence of imposed flux and aeration rates on membrane fouling in a submerged membrane bioreactor was studied. The experiments were conducted at four imposed fluxes and three aeration rates. The effect of flux on the reduction of membrane fouling was much higher than that caused by aeration rate. A lower flux of 20 L/m2 h produced 75 times more water than a higher flux of 40 L/m2 h with an aeration rate of 2 L/min. Low flux showed slightly higher removal of NH4-N and 93-96% removal of dissolved organic matter and chemical oxygen demand. Imposed flux also had a significant effect on the composition of organics present in the soluble microbial product (SMP) and extracellular polymeric substances (EPS). At a higher flux, both SMP and EPS had organics of high molecular weight (MW) of around 48 kDa as well as lower MW organics below 200 Da.

AB - The influence of imposed flux and aeration rates on membrane fouling in a submerged membrane bioreactor was studied. The experiments were conducted at four imposed fluxes and three aeration rates. The effect of flux on the reduction of membrane fouling was much higher than that caused by aeration rate. A lower flux of 20 L/m2 h produced 75 times more water than a higher flux of 40 L/m2 h with an aeration rate of 2 L/min. Low flux showed slightly higher removal of NH4-N and 93-96% removal of dissolved organic matter and chemical oxygen demand. Imposed flux also had a significant effect on the composition of organics present in the soluble microbial product (SMP) and extracellular polymeric substances (EPS). At a higher flux, both SMP and EPS had organics of high molecular weight (MW) of around 48 kDa as well as lower MW organics below 200 Da.

KW - biofilms

KW - fouling

KW - imposed flux

KW - membrane bioreactor

KW - membranes (technology)

KW - microbial polymers

KW - wastewater treatment

UR - http://handle.uws.edu.au:8081/1959.7/518357

U2 - 10.1016/j.biortech.2012.02.107

DO - 10.1016/j.biortech.2012.02.107

M3 - Article

SN - 0960-8524

VL - 122

SP - 42

EP - 49

JO - Bioresources Technology

JF - Bioresources Technology

ER -

Effect of imposed flux on fouling behavior in high rate membrane bioreactor

Abstract

Keywords

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