When the 3.85 mgd Coatesville (Pa.) Regional Wastewater Treatment Plant needed to increase capacity and meet more stringent permit limits, owner Pennsylvania American Water built a $55 million 7 mgd treatment plant with the latest technology.
The long construction time challenged the operators, as the plant had to be built in the same footprint as the old one. “We had to construct the plant in phases, adding new pieces of equipment from May 2008 to June 2009,” says company engineer and project manager Gerald DeBalko. “From June to July 2009, we had pieces of the old and new plants running at
