Development of New UF Membrane With Fine Pores for Wastewater Reuse

Biofouling development in RO membrane systems is examined with a new ultrafiltration membrane design proposed for improved wastewater reuse performance. Biofilm formation on RO membranes is identified as a driver of differential pressure increase, elevated energy consumption, and higher operational costs. A modified biofouling rate index is introduced to quantify biofilm development, and design approaches to minimize biofouling are presented through improved membrane pore structure and pretreatment optimization strategies.