Best of Two Worlds

The San Antonio Water System applies belt filter presses and sand drying beds to prepare biosolids for its contracted composting process

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...

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