Client:
City of Sanborn, IA
Sanborn, IA
Key Features:
- New moving bed biofilm reactor (MBBR) wastewater treatment facility
- Designed to treat up to 2.61 million gallons of water and 5,000 pounds of BOD/day
- Pretreatment including two mechanical spiral screens and non-mechanical grit removal
- New final clarifier and aerobic sludge digester
- New outfall line
- 400 kW backup generator & automated systems
Key Experience:
- Maintaining the use of the existing facility and utilities while constructing the new system within a congested site
- Coordinating treatment capacity, selection, and funding with a large industrial user
- Working with the Iowa DNR, Iowa Finance Authority, and the EPA to properly abide by the requirements of the SRF funding
Wastewater Treatment Facility
DGR worked jointly with the City of Sanborn, Iowa and a large industrial user to evaluate multiple treatment alternatives. Ultimately, the selection of the MBBR was chosen based on cost, operational flexibility and most importantly, limited land availability. Due to the large fluctuations in the industrial loading, a fixed film treatment technology was selected in lieu of activated sludge. Construction of the project started in the beginning of 2019 and was completed in Spring 2020.
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