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Utilities manager outlines tertiary treatment upgrade to reduce phosphorus and meet DEQ permit limits
Summary
City utilities manager Craig Vorpahl updated the Post Falls City Council on tertiary treatment work at the water reclamation facility, saying the new tertiary clarification and membrane filtration are needed to meet a Department of Environmental Quality effluent phosphorus limit.
Craig Vorpahl, utilities manager for the City of Post Falls, gave a staff update Dec. 17 on tertiary treatment being added to the city's water reclamation facility to reduce phosphorus and comply with permit limits.
Vorpahl said the existing secondary biological treatment removes about 96% of incoming total phosphorus but that the facility still discharges roughly 7 pounds per…
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