Ultrafiltration And Reverse Osmosis Testing On Tertiary Effluent From The North City Water Reclamation Plant

By Bill Pearce, City of San Diego Public Utilities Department, Aleks Pisarenko, Trussell Technologies, Susan Leanne Guibert, Toray Membrane USA, Sean Mark Carter, Toray Membrane USA

Ultrafiltration (UF) membranes have already gained worldwide acceptance in the treatment of drinking water for their removal of chlorine resistant pathogens such as cryptosporidium. Tertiary treatment with UF has been established, although with a lower level of knowledge and number of installations. This paper will discuss the performance of hollow fiber UF/MF membrane modules in treating tertiary effluent, and the subsequent performance of the downstream RO membranes.