Effects of pre-ozonation on membrane fouling by diverse NOM fractions were studied.
Pre-ozonation significantly mitigated HA, SA and SRW fouling, rather than BSA.
DOC, UV254 and fluorescence EEM were utilized to predict UF membrane fouling.
It was the UV254 rather than the DOC content related to membrane fouling.
Fluorescence EEM might be invalid to predict membrane fouling after pre-ozonation.