Membrane manufacturers offer both pressurized and immersed membrane products for water treatment, but how does one select the most appropriate membrane type for a given site and application? In this presentation, case studies for a 30 MLD pressurized WTP and a 60 MLD two stage immersed WTP will be used to discuss the differences between the two me...

For low-pressure membrane systems, one of the key design considerations involves where the waste from the membrane system will be sent and how it will be treated. For a cost effective low-pressure membrane system, the recovery is typically limited to 95-97% recovery. A 2-stage membrane system may increase the overall plant recovery to greater than...

This paper describes ten years of successful operation of membrane ultrafiltration at the Duck River Utility Commission (CRUC) and how the technology demonstrated the highest performance and reliability, comparable or better than any standard treatment technology. Energy use, water quality and plant expansions are all discussed....

Challenge test data from both loose ultrafiltration (UF) membranes, where the virus log removal value (LRV) is not correlated with LRV calculation model from the Membrane Filtration Guidance Manual (MFGM), and tight UF membranes, where a LRV calculation model can reliably be used to predict virus LRV, are presented....