The Process and Water Quality Specialists
A membrane bioreactor (MBR) is a biological wastewater treatment process that uses a microfiltration (MF) or ultrafiltration (UF) membrane to provide the solid-liquid separation. By combining three conventional processes (biological reactor, sedimentation, and tertiary filtration) into one process (Figure 1), the MBR provides a compact footprint and excellent effluent quality by directly filtering out the biological reactor solids with a membrane to achieve low turbidity, organic and nutrient content. Another distinction advantage of an MBR is that it can provide significantly more virus and pathogen removal (without disinfection) than conventional wastewater treatment processes that incorporate conventional filtration, such as a granular media filter.
Since MBRs are one of the most sophisticated wastewater treatment technologies available to the market, utilities need an experienced consultant to guide them through the technical issues that arise with the process design, operating facilities, and membrane manufacturers. Trussell Technologies, Inc. is a well-known leader in this field with a comprehensive understanding of the various membrane equipment, process design considerations, and first-hand experience with operating facilities.