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City of O’Fallon, Wastewater Treatment Plant Upgrades

O'Fallon, MO

Project Summary

The project consists of upgrading the existing 15 MGD wastewater plant via the construction of new BNR tanks bearing on deep foundations, a new High Flow Discharge Pump Station, new blower building, and upgrades to the existing clarification process. Also included is all of the ancillary site piping to tie these new systems into the overall treatment train. In addition to the secondary and tertiary process upgrades, the project also includes a new cascade aerator and improvements to the plant outfall. Each addition and upgrade includes the new equipment, controls, HVAC, and electrical modifications required to increase plant efficiency and minimize the environmental impact from the treatment process. After the new systems are installed, the existing biofiltration system will be retired and demolished.

Project Details

  • Size: 15-mgd
  • Type: Improvements
  • Delivery Method: General Contractor