Some 35 million gallons of wastewater flow daily into the Rahway Valley Sewerage Authority (RVSA) treatment plant, and a like volume of effluent flows out, all under the power of gravity.Andy Sasso wondered: Why not put the energy of that water to work, producing electricity and saving money? Four years ago, Sasso, a shift supervisor at the plant in Rahway, N.J., took an interest in hydro turbines and their potential application in wastewater treatment plants.Since then, he has been researching the technology, and would like to see treatment agencies around the country give it a closer look. He even went
