Client:
City of Sheldon

Sheldon, IA

Key Features:

  • New continuous flow sequencing batch reactor (SBR) wastewater treatment facility
  • Pretreatment including mechanical bar screen and non-mechanical grit removal
  • UV disinfection
  • 3 million gallons of waste treated daily
  • 1,000 kW backup generator
  • Automated systems
  • New outfall and discharge location

Key Experience:

  • Maintaining the use of the existing facility during construction of the new one
  • Cooperation with existing business and residences that would be affected by the location of the new facility

Wastewater Treatment Facility (SBR)

DGR Engineering (DGR) worked jointly with the City to evaluate multiple treatment alternatives which included updating the existing wastewater treatment plant. Ultimately, the selection of sequencing batch reactor (SBR) was made, based on cost, operational flexibility and convenience. The option of modernizing the existing plant was rejected because the cost would have been nearly double that of a new facility.

The new plant, rated for 5.3 million gallons per day (MGD) peak day, doubles the capacity of its predecessor. It is adequate for future population growth as well as economical development with industrial growth potential.

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Site Development

DGR Engineering (DGR) worked with the City and the project architect for all aspects of the project including topographic survey, site design, construction survey, construction observation and administration.

Site Development
Sioux City, Iowa

Sanitary Sewer Rehabilitation

The project was bid and came in under budget. Manhole lids were raised to provide better access in some areas, and rehabilitation of the sewer system was completed to give another 50 years of life to the City’s much-needed infrastructure.

Sanitary Sewer Rehabilitation
Rembrandt, IA

Wastewater Treatment Facility

MBBR technology was chosen based on cost, operational flexibility and most importantly, limited land availability.

Wastewater Treatment Facility
Sanborn, IA

Floodplain Analysis

DGR employed a Geographic Information System (GIS) in conjunction with the U.S. Army Corps of Engineers to first determine the 100-year flood elevations and delineate the floodway boundaries.

Floodplain Analysis
Sutherland, IA

Distribution Conversion

Due to concerns with the age and condition of the structures, along with safety clearances to energized equipment and conductors, a project was undertaken to replace the old infrastructure with new underground lines and associated padmount equipment.

Distribution Conversion
Redwood Falls, MN

Street & Utility Improvements

Morningside Avenue was reconstructed totaling approximately 1,300 linear feet. The project included new sanitary sewer, water main, storm sewer, fiber conduits, decorative street lighting, and 9-inch concrete paving with colored concrete sidewalks.

Street & Utility Improvements
Sioux City, IA