Sewage to heat Milwaukee sewer plant buildings
Sewage gets its warmth from heated water from homes and businesses that is flushed down drains to sewers and mixed with heated wastewater from industries.
Here’s another big city harvesting “waste” heat from sewage. Milwaukee wants to use sewage to warm buildings at two sewage treatment plants. Even at the below-zero temps of this winter’s polar vortex, sewage flowing beneath Milwaukee streets was a temperate 55° F, so it would not take much additional energy to provide indoor comfort.
“Sewage gets its warmth from all of the water heated in businesses and residences every day — for cooking and showers, as well as washing hands, dishes and vehicles — that is flushed down drains to sewers where it mixes with heated wastewater from industries. The steady flow is carried away to treatment plants,” writes the Milwaukee Journal Sentinel.
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