Vortisand Helps NOLO’s District Energy Center Clean Up Its Water

September 18, 2014 By Karen Henry

NORMC District Energy Center-energy-managejpgEnwave’s District Energy Center in New Orleans provides more than 33,000 tons of chilled water and air conditioning to more than 12 million square feet of commercial property that encompasses 15 square city blocks, including the New Orleans Regional Medical Center.

After Hurricane Katrina flooded New Orleans in 2005, all of Enwave’s cooling water systems had elevated total suspended solid levels, which led to the fouling of the heat exchangers, as well as a significant loss in efficiency and increase in maintenance costs.

After traditional media filters failed to reduce the TSS levels, the company turned to Sonitec-Vortisand, which installed its 300 gpm cross-flow microsand filter. The Vortisand filter typically removes 99 percent of particles smaller than 5 microns after 90 days. Before installing the Vortisand, Enwave’s 15 heat exchangers had to be cleaned several times per year due to the increased biofilm caused by the suspended solids, but since the filter was installed in 2010, the heat exchangers have not required cleaning, and the TSS issues that previously plagued the system have not returned.

Enwave achieved a return on its investment in less than 12 months, according to a Sonitc-Vortisand case study.

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