AWWA MTC69735

AWWA MTC69735 Treatment of Reservoir Water Using Dissolved Air Flotation and Immersed Membrane: From Pilot Scale to 60 MLD WTP in Macao

Conference Proceeding by American Water Works Association, 11/01/2009

Fabre, A.; Wong, E.; Gaffet, G.; Brehant, A.; Langlais, C.; Glucina, K.

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As part of Macao MSR Water Treatment Works (WTW) extension, a 9 months pilot study wasperformed in order to study and validate the operating conditions of the future water treatmentline, which combines dissolved air flotation (Degremont AquaDAF) and ultrafiltration (Zenonmembranes). The ultrafiltration (UF) experiments were carried out with low energy immersed polyvinylidenefluoride (PVDF) ultrafiltration membrane process that consists of outside-inside filtration. The ninemonths pilot study validated the combination AquaDAF - Zenon for drinking waterproduction in design condition defined for the new WTP. No serious damage of membrane wasrevealed by membrane autopsy even if the experience gain on Zenon membrane ageing is notsufficient throughout the 9 months pilot study to conclude on membrane replacement frequency. Includes tables, figures.

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