358 Chestnut Hill Ave, #204B Boston, MA 02135 Office: 617.505.5095 www.CleanWaterOps.com NITROGEN REMOVAL UPTON, MASSACHUSETTS (POPULATION 8,000) Effluent nitrogen of 6.0 mg/L at a facility not designed for total-N removal. Biological P removal reduces chemical use - effluent total -P 0.2 mg/L. Equipment Cost: ZERO Annual Savings: less electricity, fewer chemicals Case Study: Upton The air flow to the first two passes of the four pass 0.4

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