Odebolt Wastewater Lagoons

Odebolt Wastewater Lagoons

Odebolt, IA

The City of Odebolt had an aging aerated lagoon treatment plant that had been upgraded several times. Excess infiltration and inflow (I/I) caused the plant to exceed flow and loading levels. In addition, Iowa Department of Natural Resources (IDNR) placed additional treatment requirements for discharge to the receiving stream.

The project required design and construction administration following preparation of the preliminary report. The newly designed pump station, force main, and controlled discharge lagoon-to convey, and treat the increased loading caused by the I/I in a system-now meets the IDNR treatment standards.
The main pump station was designed to pump normal flows using a small pump and peak flows using two large pumps thereby decreasing the overall horsepower required 85% – 90% of the time. The pump station included a screen to protect the pumps from excess wear. The forcemain was approximately one and a half miles of 10″ polyethylene with a casing under a state highway.

The controlled discharge lagoon helps the City of Odebolt attain the level of treatment required by the new IDNR stream standards. The operational requirements are less than the former aerated lagoon treatment plant freeing up time for City employees to concentrate on other maintenance responsibilities.

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