Southwest Wastewater Treatment Plant Improvements

Southwest Wastewater Treatment Plant Improvements

Location: Rolla, Mo.

Client: City of Rolla, Mo.

Completion Date: Winter 2008

The City of Rolla needed to replace many processes in the Southwest Wastewater Treatment Plant. They were in deteriorating condition or had become overloaded since the plant was constructed in 1969.

Burns & McDonnell was retained to prepare a facility plan and then develop the design for a new plant sized to handle 1 million gallons per day. The new plant was designed to incorporate screening and screenings washing/compaction, vortex grit removal and grit classification, secondary treatment in an oxidation ditch, final clarification and ultraviolet (UV) disinfection.

 Provisions were incorporated into the design for future rehabilitation of the existing contact stabilization basin into a peak flow storage basin. Improvements were designed to stormwater drainage, to upgrade of electric power to 480V, and upgrade laboratory and support facilities. Provisions were also incorporated into the design for future expansion for a second oxidation ditch and a third final clarifier.

  • Facility plan
  • Cost estimating
  • Basis of design memorandum
  • Preliminary design
  • Final design
  • Environmental permitting
  • Screenings facility
  • Grit removal
  • Grit classifier
  • Oxidation ditch
  • Final clarifier
  • UV disinfection
  • Flow metering
  • Flood protection
  • Upgraded electrical service