![Mixing Technology and Operator Ingenuity Play a Key Role in This Facility's Nitrogen and Phosphorus Reductions](https://cole-tpomag.imgix.net/https%3A%2F%2Fwww.tpomag.com%2Fuploads%2Fimages%2Fchinook3.jpg?crop=focalpoint&fit=crop&fp-x=0.415&fp-y=0.305&h=620&ixlib=php-1.1.0&q=75&w=1024&s=982e1c70a4de94481c76e917c286913c)
The submersible mixers were installed in a full tank while the treatment process continued to operate.
When the small team at the Chinook (Montana) Wastewater Treatment Plant selected new mixers for a plant upgrade in 2004, they could not have known that the same mixers would still be dutifully working 16 years later — and contributing to nutrient removal.
The mixers were purchased...