TY - JOUR
T1 - Evaluation of a membrane bioreactor and nanofiltration for municipal wastewater reclamation
T2 - Trace contaminant control and fouling mitigation
AU - Chon, Kangmin
AU - Sarp, Sarper
AU - Lee, Sungyun
AU - Lee, Jong Hoon
AU - Lopez-Ramirez, J. A.
AU - Cho, Jaeweon
PY - 2011/5/3
Y1 - 2011/5/3
N2 - A membrane bioreactor (MBR) and nanofiltration (NF) membrane processes were developed for municipal wastewater reclamation, and their performances, in terms of trace contaminant control and fouling mitigation, were evaluated and designed to meet water quality criteria and minimize flux decline. The dissolved contaminants in wastewater were poorly degraded by MBR but the microbial nitrification in MBR could greatly contribute to nitrogen removal in the MBR permeate through the addition of a NF membrane. Furthermore, most dissolved contaminants were efficiently removed by the NF membrane. However, the NF membrane was ineffective in the removal of boron. The org-N/C molar ratio was inversely correlated to SUVA and directly corresponded to the 3D FEEM, structural analysis, and IR spectra of organic matter in raw and treated water, and desorbed foulants. The observations obtained from rigorous characterization revealed that the hydrophilic fractions, which were comprised of polysaccharides and amino groups, played a major role in fouling formation of the MBR-NF system. In addition, strong amide IR peak in the NF-base supported the notion that amino groups were primarily responsible for the fouling formation of the NF membrane relative to the polysaccharides groups.
AB - A membrane bioreactor (MBR) and nanofiltration (NF) membrane processes were developed for municipal wastewater reclamation, and their performances, in terms of trace contaminant control and fouling mitigation, were evaluated and designed to meet water quality criteria and minimize flux decline. The dissolved contaminants in wastewater were poorly degraded by MBR but the microbial nitrification in MBR could greatly contribute to nitrogen removal in the MBR permeate through the addition of a NF membrane. Furthermore, most dissolved contaminants were efficiently removed by the NF membrane. However, the NF membrane was ineffective in the removal of boron. The org-N/C molar ratio was inversely correlated to SUVA and directly corresponded to the 3D FEEM, structural analysis, and IR spectra of organic matter in raw and treated water, and desorbed foulants. The observations obtained from rigorous characterization revealed that the hydrophilic fractions, which were comprised of polysaccharides and amino groups, played a major role in fouling formation of the MBR-NF system. In addition, strong amide IR peak in the NF-base supported the notion that amino groups were primarily responsible for the fouling formation of the NF membrane relative to the polysaccharides groups.
KW - Fouling mitigation
KW - Membrane bioreactor
KW - Nanofiltration
KW - Trace contaminant
KW - Wastewater reclamation
UR - http://www.scopus.com/inward/record.url?scp=79952623236&partnerID=8YFLogxK
U2 - 10.1016/j.desal.2011.01.002
DO - 10.1016/j.desal.2011.01.002
M3 - Article
AN - SCOPUS:79952623236
SN - 0011-9164
VL - 272
SP - 128
EP - 134
JO - Desalination
JF - Desalination
IS - 1-3
ER -