The Town is upgrading and expanding the UCWRF to have a maximum monthly design flow of 8 mgd, with provisions for future expansions. The Town selected five-stage biological nutrient removal (BNR) utilizing membrane bioreactors (MBRs) for solids removal as the basis of design for the expansion of 8 mgd. As part of the project, the existing secondary clarifiers, disk filters, and dewatering equipment will be decommissioned. The existing ultraviolet (UV) disinfection system will be refurbished by the original equipment manufacturer.; Proposed new facilities include ultra-fine screening, conversion of the secondary clarifiers to equalization tanks, reconfiguration of the oxidation ditches to a plug flow, layout new MBRs, deoxygenation tanks, a return activated sludge (RAS) pump station, and a new dewatering facility. Existing infrastructure, including the Preliminary Treatment Facility, Influent Pump Station, cascade aerator, and waste activated sludge (WAS) holding tanks, will remain in operation.
