TY - GEN
T1 - Factors influencing natural organic matter fouling in low pressure, hollow fiber membrane filtration of natural waters
AU - Jacangelo, Joseph G.
AU - Huang, Haiou
AU - Young, Thayer
AU - Amy, Gary
AU - Lozier, James
AU - Mysore, Chandra
PY - 2006/12/1
Y1 - 2006/12/1
N2 - Low pressure, hollow fiber (LPHF) membranes are subject to fouling by natural organic matter (NOM) during the filtration of natural waters. The mechanisms of fouling were explored in an AWWARF-funded study at bench scale using representative types of LPHF membranes and natural water samples, coupled with complimentary techniques for foulant characterization. The fouling results were quantified using the new concept called the "unified modified fouling index (UMFI)". It was found that membrane fouling is affected by multiple factors, including the presence of the high molecular weight (HMW) fraction of NOM. The magnitude of fouling was more specific to each membrane/water combination, than hydrodynamic conditions of filtration; The analysis of UMFI suggested that the observed fouling usually followed a pseudo-cake formation type of fouling, with the indices varying between 0.0027∼0.034 m2/L. Hydraulic backwashing was shown to effectively remove fouling if the proper membranes were chosen for a specific source water. The results from this study offer the membrane end user a more efficacious manner to evaluate the potential of their water to foul specific membranes by employing the developed UFMI. Moreover, it suggests important factors that may influence the fouling of their membranes by natural organic matter.
AB - Low pressure, hollow fiber (LPHF) membranes are subject to fouling by natural organic matter (NOM) during the filtration of natural waters. The mechanisms of fouling were explored in an AWWARF-funded study at bench scale using representative types of LPHF membranes and natural water samples, coupled with complimentary techniques for foulant characterization. The fouling results were quantified using the new concept called the "unified modified fouling index (UMFI)". It was found that membrane fouling is affected by multiple factors, including the presence of the high molecular weight (HMW) fraction of NOM. The magnitude of fouling was more specific to each membrane/water combination, than hydrodynamic conditions of filtration; The analysis of UMFI suggested that the observed fouling usually followed a pseudo-cake formation type of fouling, with the indices varying between 0.0027∼0.034 m2/L. Hydraulic backwashing was shown to effectively remove fouling if the proper membranes were chosen for a specific source water. The results from this study offer the membrane end user a more efficacious manner to evaluate the potential of their water to foul specific membranes by employing the developed UFMI. Moreover, it suggests important factors that may influence the fouling of their membranes by natural organic matter.
KW - Fouling control
KW - Hollow fiber membrane
KW - Low pressure
KW - Membrane fouling
KW - Natural organic matter
UR - http://www.scopus.com/inward/record.url?scp=84871479184&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84871479184&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84871479184
SN - 9781604237306
T3 - American Water Works Association - Water Quality Technology Conference and Exposition 2006: Taking Water Quality to New Heights
SP - 877
EP - 887
BT - American Water Works Association - Water Quality Technology Conference and Exposition 2006
T2 - Water Quality Technology Conference and Exposition 2006: Taking Water Quality to New Heights
Y2 - 5 November 2006 through 9 November 2006
ER -