BHC Consultants

Automation of Chemical Ortho-Phosphate Removal at the Arlington WWTF

The project addressed a need to reduce the amount of chemicals used to remove phosphorus at the Arlington Wastewater Treatment Plant. Although the plant already removed most phosphorus through its normal treatment process, it still relied on alum to keep phosphorus levels within permit limits when wastewater conditions changed. The work was intended to explore an automated control approach that could better adjust chemical dosing at key points in the plant using existing equipment and operating data. Planned outputs included a technical memo, preliminary process drawings, and a cost analysis to help assess potential operational improvements and savings.