City of Kiron Water System Design Improvements

City of Kiron Water System Design Improvements

Kiron, IA

Water Resource Restoration
The City of Kiron had major issues with substantial urban and agricultural stormwater runoff causing soil erosion, stream bank failure, and nutrient contamination of East Otter Creek. During large rain events, the gravel road leading to the City’s wastewater treatment plant was prone to wash out. ISG designed a solution utilizing Low Impact Development (LID) practices including bioswales and bioretention cells to treat, infiltrate, and reduce the stormwater’s peak flows.
Wastewater Treatment Plant Improvements
ISG designed a new system consisting of a covered two-cell aerated lagoon with a LEMNA polishing reactor and UV disinfection. A sewage grinder was included in the inlet structure for the lagoon. The existing collection system had two separate force mains that were extended, and flow meters were added to measure the flows coming from both systems. The covered aerated lagoon was designed to handle increased loading from the Infiltration and Inflow (I/I), retain heat during winter months (which decreases the footprint needed
for the nitrification process in the polishing reactor), and attain the level of treatment required by the IDNR stream standards and the excess I/I. The operation requirements are now consistent with the City’s mechanical plant, and the improvements also include design and construction services related to the UV disinfection system to comply with E. coli and other bacteriological compliance requirements.

Public Works

  • Alta Wastewater Treatment Plant

  • Cherry Street Ramp

  • Fairmont Water Treatment Plant

  • Goodhue Water Tower

  • Humboldt Pavement Management Study

  • Kingsley Wastewater Treatment

  • Lawton Water Treatment Plant

  • Madison Lake Regionalization

  • Mill Creek Bridge

  • Moville Comprehensive Plan

  • Sample Street

  • Second Street Ramp

  • Sibley Parkway

  • Sloan Wastewater Treatment Plant

  • South Front Street Reconstruction

  • Sumner Avenue Town Square

  • Trunk Highway 60 Downtown Reconstruction and Improvements

  • US Highway 14 Roundabout

  • US Highway 20

  • US Highway 59

  • West Lakeshore Drive