Project Spotlight: Rensselaer Wastewater Treatment Plant Improvements

The City of Rensselaer recently broke ground on a $19M construction project to make significant improvements to the City’s wastewater treatment plant. This project was established as a phase II project in the City’s Long Term Control Plan (LTCP).

The existing facility has many components beyond or approaching the end of their useful life and experiences issues processing high nutrient loads and flow rates due to its configuration. The project primarily includes a new three-ring oxidation ditch and two new secondary clarifiers. Also included in the project is a new secondary pump station, flow splitter structure, RAS/WAS pump station, and conversion of an existing aeration basin into a wet weather storage tank. The project will increase the rated design flow of the WWTP from 1.6 MGD to 2.24 MGD and will maintain the rated peak flow capacity of 4.0 MGD. Additionally, the layout and sizing of ancillary piping and structures allow for capacity upgrades, such as additional secondary clarifiers or oxidation ditch expansion, if needed in the future.

The project construction is anticipated to last 18 months and be completed in early 2027. For more information regarding the project, please reach out to Andrew Robarge, PE or Ryan LaReau, PE.