Vermillion WWTF Improvements - Pump Station

Vermillion WWTF Improvements - Pump Station


Vermillion, SD

Construction Cost

$1.5 Million (Lift Station)

Due to aging equipment, the City of Vermillion replaced their 50-year old main wastewater pump station with a new pump station that also added capacity and redundancy with a new parallel force main. The new wetwell/drywell lift station was constructed adjacent to the current station on the east bank of the Vermillion River. The design of Vermillion’s Main Lift Station incorporated influent grinding, a self-cleaning trench type wetwell, four (4) variable frequency drive (VFD) wetwell/drywell pumps, a pump maintenance area, 250KW emergency power generation, a fiber optic connection to the plant SCADA, room for two future equalization pumps, and land area for a future wastewater equalization pond. The station was designed according to Hydraulic Institute Standards 9.8 - Rotodynamic Pumps for Pump Intake Design Standard. With the current pumps, the station achieves a firm pumping capacity of 4.5-million gallons per day (MGD). The station is designed to allow expansion to 5.8 MGD. Construction of the lift station was concurrent with major improvements at the City’s wastewater treatment plant. Since the system has been put into operation, the City has performed multiple successful cleaning operations that have kept the wetwell free of grit and debris, and greatly reducing maintenance requirements.

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Project Goal #1

Reduce the risk of unauthorized sanitary sewer bypassing into the Vermillion River

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Project Goal #2

Provide a parallel forcemain for system redundancy

Project Features

  • New wetwell/drywell lift station structure
  • Influent In-Pipe Grinder System
  • Four Wetwell/Drywell Style Pumps for System Flexibility
  • Provisions for Future Expansion
  • Stand-by power

Services Provided

  • Facility Plan
  • Topographic Survey
  • Preliminary/Final Design
  • Construction Documents
  • Bidding Assistance
  • Construction Contract Administration
  • Construction Staking and Observation
  • Operations and Maintenance (O&M) Manual

Support Disciplines