Wastewater Treatment Plant Digester, City of Columbia, MO

The project involved replacing the covers on three primary digesters, replacing or rehabilitating the cover on the secondary digester, upgrading the digester mixing systems in the primary digesters, installing a new temperature control system for the heat exchangers, and performing necessary structural repairs to the Digester Complex Facility.

• Size: 25.2-mgd
• Type: Improvements
• Delivery Method: Construction Manager at Risk