Client:
City of Estherville, Iowa
Estherville, IA
Key Features:
- New dual membrane digester covers on primary and secondary digesters w/ high velocity mixing system.
- Digester gas production and capture increase with equipment upgrade.
- Prioritizing plant improvements to existing equipment and infrastructure.
Key Experience:
- Evaluation of treatment plant and analyzing available technologies to determine the best solution for the client.
- Determining necessary plant improvements not directly related to NPDES permit compliance.
Digester Improvements Project
Analyzed digester cover and mixing system alternatives due to condition of existing plant equipment. Selected cover and mixing system to best fit the City’s request for potential future digester gas re-use to reduce plant operational expenses. Dual membrane cover with high velocity nozzle mixing was selected based on life cycle analysis of alternatives.
Performed a plant evaluation of the existing equipment and infrastructure to prioritize improvements to the facility that will not affect potential future improvements to the facility to meeting compliance with the newly issued NPDES permit.
Featured Projects
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- Wastewater
- Water
Wastewater Treatment Facility (SBR)
The City ultimately determined a flow-through style SBR system to be the preferred choice based on the selection criteria and the ability to meet anticipated permit limits.
Orange City, IA
Site Development
Planning started with site plan design for the new facility to offer maximum exposure to traffic on Highway 75.
Rock Rapids, IA
Wastewater Treatment Facility (SBR)
The new plant, rated for 5.3 million gallons per day (MGD) peak day, doubles the capacity of its predecessor.
Sheldon, IA
Lift Station, Control Panel and Valve Vault
The SE Sanitary Sewer Extension project provided sanitary sewer service to a previously un-serviced area southeast of Dell Rapids, SD.
Dell Rapids, SD
Wastewater Treatment Facility (SBR)
The new SBR system utilizes the existing aeration lagoon for equalization and another lagoon cell for sludge storage, which reduced the cost of the project for the City and provided more operational flexibility.
Dell Rapids, SD
Lift Station, Control Panel, Valve Vault
The SE Sanitary Sewer Extension project provided sanitary sewer service to a previously un-serviced area southeast of Dell Rapids, SD
Dell Rapids, SD