Google Begins Using Grey Water to Cool Data Centers
Google has begun using the water from its neighbors' bathtubs, showers and sinks to cool its data centers in Douglas County, Georgia.
Typical data centers can use hundreds of thousands of gallons of water a day. In their continued efforts to run highly efficient facilities, Google worked with Douglasville-Douglas County Water and Sewer Authority to set up a system that uses reuse water—also known as grey- or recycled water—in the cooling infrastructure. With this system in place, Google is able to use recycled water for 100 percent of its cooling needs.
Jim Brown, Google Data Center Facilities Manager, explains how it works:
The WSA has a water treatment facility in Douglasville, Ga. that cleans wastewater from the local communities and releases it back into the Chattahoochee. We worked with the WSA to build a side-stream plant about five miles west of our data center that diverts up to 30 percent of the water that would have gone back into the river; instead we send it through the plant for treatment and then on to the data center. Any water that doesn’t evaporate during the cooling process then goes to an Effluent Treatment Plant located on-site. There, we treat the water once again to disinfect it, remove mineral solids and send it back out to the Chattahoochee—clean, clear and safe.
Read the more and see a video of the process at: http://googleblog.blogspot.com/2012/03/helping-hooch-with-water-conservation.html