Nutrient Removal Trends And Low DO Operation With Leon Downing

Nutrient removal is evolving as utilities face tighter effluent limits, aging infrastructure, workforce changes, and pressure to control costs. Rather than simply expanding treatment capacity, utilities are exploring optimization and intensification strategies that can extract more performance from existing assets.

Low dissolved oxygen operation is one example, with the potential to reduce aeration energy while improving nitrogen and phosphorus removal under the right conditions. Applied research, pilot testing, and demonstration projects are also helping utilities evaluate emerging approaches before incorporating them into capital plans. At the same time, digital tools can turn thousands of daily treatment-process data points into information operators can act on.

Explore how research, operational experience, and smarter use of data are opening new possibilities for nutrient management.