AWWA WQTC59027

This slide presentation discusses techniques for ultrafiltration membrane integrity assurance and fouling identification. Topics covered include: direct integrity tests to detect compromised membrane fibers; challenge tests to provide proof of pathogen log removal value retained by the membranes; membrane autopsy for fouling information on improving influent pretreatment and cleaning regime; influent end foulant accumulation; and, powdered activated carbon found on membrane surface after chemical cleaning.