Wastewater Department

Wastewater Department Superintendent-
Dean Paulsen
712-324-2234
Email:  dpaulsen@cityofsheldon.com

The Wastewater Treatment Facility is located on the West side of Sheldon at 910 Western Ave.

Purpose
The primary function of the facility is to clean the used water from our residents and industries before it is returned to the river. We have more than 25 miles of sanitary sewer lines and seven sewage pumping stations throughout the city.

History
The Sheldon Wastewater Treatment Facility was built in 1948 with upgrades in 1978, 1999, and 2000.  The current facility consists of a manual bar screen, an aerated grit removal chamber, a 3 pump lift station, 2 primary clarifiers, 8 Rotating Biological Contactors (RBC’s), 2 final clarifiers, and an aerobic digester.

Current Improvements
In response to the EPA’s new water quality standards, the City of Sheldon is currently working towards a major upgrade which will consist of a complete replacement of the current RBC facility with a flow through Sequencing Batch Reactor (SBR) treatment system.  Included in the project will be a mechanical bar screen, grit removal, a 4 pump lift station, a 4 cell SBR, Ultra violet disinfection system, and other system improvements.

The new Design Flow

  • 1.4375 Million Gallons per Day (MGD) Average Dry Weather (ADW)
  • 3.0245 MGD Average Wet Weather (AWW)
  • 3.8295 MGD Maximum Wet Weather (MWW)
  • 5.2795 MGD Peak Hourly Wet Weather  (PHWW)

2016 Wastewater Facility information

  • 587,121,000 gallons of wastewater were treated which calculates to an average of 1.609 million gallons per day

Bio Solids

  • 1.202 million gallons produced
  • 91.19 Tons of dry solids land applied

Prior to discharge to receiving stream

The Sheldon Wastewater Facility is issued a National Discharge Elimination System (NPDES) permit from the Department of Natural Resources which states what level a treatment must be achieved before any water may be discharged into the Floyd River.  This permit states which pollutants must be tested and the frequency at which they must be tested.

The City of Sheldon Wastewater Facility staff, which consists of 3 full time wastewater treatment certified operators strive to ensure that only clean water enter the Floyd river.  This is achieved by daily sampling, testing, and monthly reports being sent to the DNR.