As utilities develop facilities to maximize water resources, indirect potable reuse and direct potable reuse are becoming more common.Microfiltration or ultrafiltration membranes are often installed for pretreatment ahead of reverse osmosis, and advanced biological treatment often precedes membrane treatment.However, the integration of advanced biological treatment and tertiary membrane treatment result in operations and maintenance challenges. When the two treatment worlds collide, it’s helpful for operators to understand the issues and their options to keep both processes working effectively and consistently.Daily disagreementBiological and membrane process flows need fundamentally different management. Membranes want a steady influent flow, whereas biological systems have to
