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Consultants recommend phased $42M bio‑solids dewatering project; council seeks federal help
Summary
Engineers told the council Brainerd’s wastewater plant needs a phased upgrade: Phase I to add dewatering and other system improvements (~$42M) to address bio‑solids storage shortfalls; staff and the council authorized pursuing a $10M congressional appropriation for Phase I and will pursue SRF and grant funding.
Bolton & Mink engineers told the Brainerd City Council on Feb. 17 that the city’s wastewater treatment facility needs multi‑stage upgrades to meet future nutrient limits and bio‑solids storage requirements.
Morgan Salem, principal wastewater engineer with Bolton & Mink, summarized a facility plan that projects community flows and loadings through 2050 and evaluates alternatives for both the liquid (nitrogen/phosphorus removal) and solids (bio‑solids) streams. The consultant said current sequencing‑batch‑reactor (SBR) processes are operational today but are limited for future, more stringent nutrient limits and that the plant is approaching the Minnesota Pollution Control Agency’s 180‑day on‑site bio‑solids storage benchmark in some years.
Bolton & Mink’s recommended, limit‑driven roadmap is phased: Phase…
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