Validation Protocols for Membrane Bioreactors and Ozone/Biologically Activated Carbon for Potable Reuse Webcast


Potable water reuse projects often use membrane bioreactors (MBRs) as part of the treatment train. MBRs offer significant footprint savings, are cost-effective, and produce high-quality effluent. However, membranes in MBRs are exposed to harsh conditions that can result in damage, which raises concerns about pathogen reduction. The determination of pathogen log reduction values (LRVs) by MBRs has been studied in Australia through the WaterVal program. The latest work on this topic, focused on the U.S. market and led WRF, sets baseline pathogen LRVs (Tier 1) for all MBR systems and details testing protocols for higher (Tier 2) LRVs.

This webcast focused on Validation Protocols for Membrane Bioreactors and Ozone/Biologically Activated Carbon (4997), a project that critically evaluated prior work, incorporated new data from U.S. MBR studies, proposed conservative Tier 1 LRVs of 1.0 (virus) and 2.5 (protozoa), and developed a validation protocol to attain higher LRVs. This protocol project provides fundamental guidance that will assist regulators in assigning pathogen reduction credits for MBRs.

Andrew Salveson, PE, Water Reuse Practice Director, Carollo Engineers
Shane Trussell, PhD, President, Trussell Technologies, Inc.
Amos Branch, Water Reuse Technologist, Carollo Engineers
Karl Linden, PhD, Professor, University of Colorado at Boulder

Mary Smith, Research Project Manager, The Water Research Foundation

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