Making the Best of It

A Phoenix wastewater treatment plant focuses on optimization to operate more effectively, reduce costs and protect the environment
Making the Best of It
A Brown Bear tractor aerates biosolids at the 91st Avenue plant. Solar drying has cut land application costs from $5 million a year to $1.9 million.

The 91st Avenue Wastewater Treatment Plant in Phoenix, Ariz., has a simple mission: meet permits; reduce chemical, energy, and biosolids costs; automate where practical; and innovate. Despite the lack of any large capital projects, the plant has achieved big savings, says assistant...

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