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Lime Softening–the Forgotten Technology: Optimization Case Studies From South Florida

Authors: Smith, T., Hart, V., Nyfennegger, J.S., Paterniti, J., Low, M., and Guevarez, J.

Florida Water Resources Journal, November 2020

Many water treatment plants (WTPs) throughout the state of Florida have been using lime softening, primarily for the removal of color, calcium hardness, and, to a lesser extent, magnesium hardness for decades. Many of these facilities are experiencing challenges with controlling the lime softening process due to aging infrastructure, loss of engineering/operational expertise, a shift in water quality goals, and solids handling challenges.

This article includes findings and recommendations from multiple case studies across south Florida, including the City of Boynton Beach (city), related to the optimization of the lime softening process leading to a reduction in chemicals and solids generation, as well as tools to help operators meet finished water quality goals and maintain a consistent water quality.

https://issuu.com/fwrj/docs/1120_20fwrj_web

Citations

Smith, T., Hart, V., Nyfennegger, J.S., Paterniti, J., Low, M., and Guevarez, J. “Lime Softening–the Forgotten Technology: Optimization Case Studies From South Florida.” Florida Water Resources Journal. (71)11:44-49, November 2020.