The managers of San Antonio’s water recycling operations believe in working with nature. Today, the city’s three recycling plants use the sun’s warmth as a major part of their strategy for drying biosolids.
Drying beds covering some 25 acres work in concert with belt filter presses to produce dewatered material for contracted composting operations. All told, the San Antonio Water System’s three water recycling plants produce 37,000 dry tons of biosolids per year.
The staff of the SAWS centralized biosolids processing facility at the Dos Rios Water Recycling Center (WRC) focuses on optimizing both drying processes. That includes deploying natural predators for







