A new Google initiative wants to recycle wastewater to cool its hot Douglas County, Georgia data center. By collaborating with the local water authority (The Douglas County Water and Sewer Authority – WSA), Google will not only avoid using freshwater for cooling purposes, but will also partially clean the wastewater (30%), thus helping the community use less power and emit less carbon dioxide.
The new system uses evaporative cooling, by spraying water and pumping outside air, a process that “commonly uses hundreds of thousands of gallons of water a day.”
What remains after evaporation is sent to another cleaning plant, built near the data center, which cleans it completely and sends it back to the Chattahoochee river.
Google even made a video explaining all the above: