The Blaine County Journal News-Opinion - We've Got The County Covered

Chinook Wastewater Treatment Plant's "good example" goes international


April 7, 2021

The Chinook Wastewater Treatment Crew as pictured in the March issue of "Treatment Plant Operator," a trade magazine highlighting effective practices and technology/equipment related to wastewater and industrial discharge treatment operations. Pictured left to right are Cory Fox, Eric Miller and Matthew Finley. The Chinook-based plant's use of low-speed mixers to agitate wastewater was featured in the magazine and reprinted in several international sources.

In 2014 the US Environmental Protection Agency asked the staff at the Chinook Wastewater Treatment Plant (WWTP) if they would help the regulatory agency develop a case study to be shared with other older wastewater treatment plants. What interested the US Agency was how the staff in Chinook was able to remove nitrogen from wastewater using a 1984-era plant built solely to remove solids and maintain a certain oxygen content.

At the time the plant first opened there were few issues about leaving nutrients in discharged water after treatment. The concerns and regulations came several years af...

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