Data center saves over $25,000 per year on discharge fees using Silver Bullet.
The growing population of data centers in Ashburn, Virginia has led to tougher restrictions for discharging traditional chemicals used to treat data center cooling towers. With over 70 data centers operating with 10 million square feet in Ashburn’s Data Center Alley, the Loudoun County government increased water restrictions. County regulatory changes included adding sewer fees for traditional cooling towers. Facing $25,000+ discharge fees, the data center operator participating in this case study looked to Silver Bullet Water Treatment for cooling tower water treatment solutions that would breakup scale, inhibit biofilm, and increase system and resource efficiency.
In order to conform to new Loudoun County water regulations, this data center operator wanted to begin using reclaimed water, and avoid $25,000+ annual fees for cooling tower discharges, a product of traditional cooling water chemistry. While overall data center water consumption was a concern, it could not come at the cost of a reduction in the quality of water treatment. The facility also required a water treatment protocol to match their 24-hour mission critical operation.
The Silver Bullet Solution
The data center installed a Silver Bullet CT230 on its evaporative condensing systems. The tower bleed off was adjusted according to the higher limits of the Silver Bullet technology, which saved water. As scale and biofilm slowly began to break up, system efficiency increased and electricity demand was significantly reduced. Results were seen within the first two months of installation. Over the next three years, the data center operator installed Silver Bullet water treatment systems on its other sites across the United States.
Benefits and Results
The Ashburn data center center achieved significant financial and operational return on investment from implementing a custom Silver Bullet solution:
Cooling tower bleed off was adjusted from 66% down to 25%, producing savings of more than 15,000 gallons per day or 5.4MM gallons
The data center operator was able to reduce sewage discharge costs by over $25,000 per year
The efficiency of the chiller and the heat exchange on the condenser improved, allowing for a reduction of electrical usage and total operational time on the system
All existing algae on distribution decks, fill and basin was eliminated
After 60 days, biofilm was eliminated from the distribution decks, fill and basin
Total aerobic counts went from 105 CFU/ml to less than 103 CFU/ml (two log reduction), without non-oxidizing biocides or bio-dispersants