Lemay Wastewater Treatment Plant Disinfection

In order to comply with Federal Regulations regarding the quality of water that is discharged after treatment at a wastewater plant, MSD was required to construct this plant addition, with KCI winning the competitive bid. One of the largest systems in the area, this upgrade needed to have the ability to treat a peak flow of 240 Million Gallons per Day of wastewater. The project scope included a 2,200 sf Chlorination Building, a 23,000 sf UV & Disinfection Facility, and installation of 144″ diameter Prestressed Concrete Pipe to connect the new UV Facility to existing junction chambers. The new UV Facility consists of five channels of 20 modules of 36 UV lamps, which treat the wastewater prior to an average daily discharge of 167 million gallons into the nearby Mississippi River.

Size: 25,200 square feet

Owner: Metropolitan St. Louis Sewer District

KCI Role: General Contractor

Value: $21,700,000

Delivery Method: Bid Build

Completion: September 2013

Designer: HDR

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