The city of East Providence, R.I., needed to bring its 10.4-million-gallon-per-day wastewater treatment plant and 115-mile, 25 pump station and collection system into regulatory compliance. The $52-million design-build-operate project increased plant capacity to 14.2 mgd and mitigated overflows to Narragansett Bay. The project was completed on time and under budget, all while maintaining service on the treatment plant and collection system.
The treatment plant's new design reconfigured existing aeration basins for integrated fixed-film activated sludge technology. The design included a new headworks building, solids screening, odor control systems, primary clarifier upgrades and solids handling upgrades.