Southport Advanced Wastewater Treatment Plant

The city of Indianapolis planned to install a deep tunnel system under the city as a result of negotiations with the EPA to significantly decrease combined sewer overflows. Once in operation, the tunnel flows, estimated at 90 MGD, were to be pumped to the Southport Advanced Wastewater Treatment Plant, which did not have the capacity to treat these additional flows. Therefore, the City moved forward with a plan to expand the plant from its current design capacity of 150 MGD to 250 MGD. American Structurepoint was part of a team charged with analyzing the existing plant condition and capacity and identifying and evaluating options for upgrading each of the processes in the plant, including screening and pumping, grit removal, primary clarification, secondary treatment, and disinfection.