The aim of this study was to assess temporal changes in log removal values (LRV) for a suite of microorganisms, for time scales relevant to the expected life of modern MBR modules. A higher level of fouling on the older membranes likely improved rejection, although not consistently, when compared to new clean membranes. Larger bacteria and protozoan indicator removal efficiencies increased following replacement, indicating improved size exclusion by the new membranes. The results of this study suggest that within 10 years, no significant decline in LRV is expected. Unless gross, easily detectable, membrane integrity failure occurs, a MBR will continue to produce high quality water.
This presentation is available to AMTA Members only.
- Gerin James / Amos Branch / Trang Trinh / Troung Minh Ta / Greg Leslie / Pierre Le-Clech
- Evoqua Water Technologies LLC / University of New South Wales / University of New South Wales / University of New South Wales / University of New South Wales / University of New South Wales
- AMTA/AWWA Membrane Technology Conference, San Antonio, TX
- AMTA/AWWA Membrane Technology Conference
- MBR, membrane bioreactor, life cycle, log removal values, LRV