title: Effect of hydraulically reversible and hydraulically irreversible fouling on the removal of MS2 and φX174 bacteriophage by an ultrafiltration membrane.
abstract: The effect of membrane fouling on the removal of enteric virus surrogates MS2 and φX174 bacteriophage by an ultrafiltration membrane was assessed under simulated full-scale drinking water treatment operating conditions. Filtration experiments of up to 8 days using either river or lake water ascertained how the membrane fouling layer affected virus removal. Organic carbon fractionation techniques identified potential foulants, including biopolymers, in the feed water and in the permeate. Hydraulically irreversible fouling could greatly improve the removal of both viruses at moderate and severe fouling conditions by up to 2.5 logs. Hydraulically reversible fouling increased virus removal only slightly, and increased removal of >0.5 log for both phage were only obtained under severe fouling conditions. The increase in virus removal due to irreversible and reversible fouling differed between the two water sources. As the degree of fouling increased, differences between the removal of the two phage decreased. Maintenance cleaning partially removed membrane foulants, however virus removal following maintenance cleaning was lower than that of the fouled membrane, it remained higher than that of the clean membrane.
authors: NSERC Chair in Water Treatment, Department of Civil and Environmental Engineering, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada. Electronic address: a2elhadi@uwaterloo.ca.
authors: Ahmed M
authors: AM
authors: ElHadidy
authors: NSERC Chair in Water Treatment, Department of Civil and Environmental Engineering, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada.
authors: Sigrid
authors: S
authors: Peldszus
authors: NSERC Chair in Water Treatment, Department of Civil and Environmental Engineering, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada.
authors: Michele I
authors: MI
authors: Van Dyke
mesh_terms: D010584:Bacteriophage phi X 174 / Q000302:isolation & purification*; D057219:Biofouling; D002853:Chromatography, Liquid; D060766:Drinking Water / Q000821:virology*; D005374:Filtration / Q000379:methods*; D060106:Lakes / Q000821:virology; D017909:Levivirus / Q000302:isolation & purification*; D045483:Rivers / Q000821:virology; D014462:Ultrafiltration / Q000379:methods; D018508:Water Purification / Q000379:methods*
chemical_list: D060766:Drinking Water
keywords: Bacteriophage; Irreversible fouling; Natural organic matter; Reversible fouling; Surface water; Ultrafiltration membrane