Blowdown Recovery System for Cooling Tower Water Treatment

David Sickinger, Gregg Tomberlin

Research output: NRELTechnical Report


From 2014-2017, the U.S. General Services Administration's (GSA's) average nationwide water rates increased 41%. Rapidly escalating costs, mandated water-reduction targets, and the fact that an average of 28% of commercial office building water use is associated with heating and cooling led the GSA Green Proving Ground program to select alternative water treatment technologies for in-field validation. This report summarizes the latest alternative water treatment evaluation completed in 2022 - a Blowdown Recovery System for Cooling Tower Water Treatment. This Green Proving Ground program project assessed the performance of an alternative water treatment system provided by Aqualogix for treating cooling tower blowdown at the Lloyd D. George U.S. Courthouse in Las Vegas, Nevada.
Original languageAmerican English
Number of pages31
StatePublished - 2023

NREL Publication Number

  • NREL/TP-2C00-86615


  • alternative water treatment
  • AWT
  • BDR system
  • blowdown recovery system
  • GPG
  • Green Proving Ground
  • GSA
  • U.S. General Services Administration


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