Economic and Design Considerations for Membrane Filtration at a Lime Softening Plant

By Michael Bernard, PE and Sam Harrison, EI - Smith Seckman Reid, Inc.

The City of Murfreesboro Water and Sewer Department (MWSD) currently operates a 15.6 MGD Lime Softening/Mixed Media Filtration plant to provide drinking water to its approximately 25,000 customers. Although the plant has operated well over the last 40 years, increasing tight regulations coupled with concerns over aging filtration underdrains motivated City personnel to consider alternative filtration technologies to provide the best quality drinking water possible to its customers. The decision was made in 2004 to rehabilitate the existing treatment processes, and to include membrane filtration in the updated process scheme.

Full Article