Minimize Microfiltration Membrane Maintenance: Best Practices for Cleaning and Disposal

Last Modified: Dec 10, 2009


  • Eileen McCarthy Feldman and Ian A. Crossley - Hazen and Sawyer
  • Richard Ruge - Westchester Water Works

Filtration using membranes is an excellent technique to produce high-quality drinking water. However, as constituents are removed from the water, care must be taken to treat, recover, and dispose of the waste streams to ensure economical membrane performance.

Westchester Joint Water Works (Mamaroneck, N.Y.) and its consulting engineer designed a 20-mgd water treatment plant for the Rye Lake supply in Harrison, N.Y. To determine the best treatment process for Rye Lake water, the design team conducted multiple evaluations and pilot studies. Immersed microfiltration (MF) membrane treatment was identified as the best process for several reasons, including ease of operations and maintenance, treatment effectiveness, and low waste generation.

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