{"id":18981,"date":"2015-03-23T10:00:46","date_gmt":"2015-03-23T14:00:46","guid":{"rendered":"https:\/\/retrofitmagazine.com\/?p=18981"},"modified":"2015-03-23T09:44:08","modified_gmt":"2015-03-23T13:44:08","slug":"facility-replaces-filtration-system-to-reduce-tss-levels","status":"publish","type":"post","link":"https:\/\/retrofitmagazine.com\/facility-replaces-filtration-system-to-reduce-tss-levels\/","title":{"rendered":"Facility Replaces Filtration System to Reduce TSS Levels"},"content":{"rendered":"

Enwave USA<\/a> (formerly Entergy Thermal) located in New Orleans, completed the design-build of a new District Energy Center in New Orleans to provide services to the New Orleans Regional Medical Center (NORMC) and other clients.<\/p>\n

The facility 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.<\/p>\n

\"Jeff<\/a>
Jeff Davis, director plant operations for Enwave USA.<\/figcaption><\/figure>\n

Post Katrina<\/h4>\n

In 2009, Hurricane Katrina flooded the entire city which led to elevated Total Suspended Solids (TSS) levels in all their cooling water systems. This increase in TSS caused fouling of the heat exchangers resulting in a significant loss in efficiency and increase in maintenance costs. Jeff Davis, director plant operations for Enwave USA attended the IDEA Expo in Washington, D.C. looking for solutions to improve his bulk chilled water quality in the aftermath of considerable damage caused by flooding. Davis visited the Sonitec-Vortisand<\/a> booth and met with Regional Manager Keith Karl.<\/p>\n

The Challenge<\/h4>\n

Jeff discussed the challenges they were having with poor water quality negatively impacting the performance of their large thermal chilled water supply. They had tried traditional media filters and they did not succeed in reducing the level of TSS.<\/p>\n

It was determined the best solution to clean up this large volume chilled water loop, while keeping within a tight budget, would require a 300 gpm Vortisand cross-flow microsand filter that provided submicron filtration and high-quality water.<\/p>\n

The Vortisand system replaces a traditional sand filter that claimed 5 micron capability. A standard laser particle distribution analysis illustrated that 80 percent of the TSS were less than 5 micron in size.<\/p>\n

\"It<\/a>
It was determined the best solution to clean up this large volume chilled water loop, while keeping within a tight budget, would require a 300 gpm Vortisand cross-flow microsand filter that provided submicron filtration and high-quality water.<\/figcaption><\/figure>The new Vortisand unit was installed in early 2010 and after several months of operation proved to be a wise investment for them. Typically, 99 percent removal of particles smaller than 5 micros is achieved after 90 days. Proof that a quality cross-flow microsand submicron filtration system coupled with a comprehensive chemical treatment program was the key to reducing TSS levels.<\/p>\n

Results<\/h4>\n

During a site visit in April 2014, Jeff Davis stated he has never seen the chilled water this clean since the start-up of the facility in 2000. The TSS issues that previously plagued the entire system never returned. Previously, their 15 heat exchangers had to be cleaned several times per year because of the increased biofilm caused by the suspended solids. \u201cThese heat exchangers have not had to be cleaned since the Vortisand was installed in 2010,\u201d says Davis. Maintaining their design efficiency has improved the bottom line every year with a return on investment of less than 12 months.<\/p>\n","protected":false},"excerpt":{"rendered":"

Enwave USA (formerly Entergy Thermal) located in New Orleans, completed the design-build of a new District Energy Center in New Orleans to provide services to the New Orleans Regional Medical Center (NORMC) and other clients. The facility provides more than 33,000 tons of chilled water and air conditioning to more than 12 million square feet<\/p>\n","protected":false},"author":193,"featured_media":18987,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"Online Exclusive: Facility Uses @Vortisand #Filtration System to Reduce #TSS Levels 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