by Erin Moore
Is "Peecycling" the Next Wave in Sustainable Living?
Today, most human waste in the U.S. flows down the pipes to a facility such as DC Water's Blue Plains Advanced Wastewater Treatment Plant, the largest facility of its kind in the world. Blue Plains receives an average of 370 million gallons of wastewater, 94 percent of which is from residential sources in the District of Columbia and parts of Maryland and Virginia. This includes what washes down the kitchen drain, fills up washing machines, and flushes down toilets.
Once at Blue Plains, it all goes through a multistage process in which it is passed from pool to pool of various hues of reddish brown, where the liquid is stirred, bubbled, fed to algae, and filtered until it is clean enough to get dumped back into the Potomac River.