Norton Water Treatment Plant
The Town of Norton selected Weston & Sampson to perform pilot testing, design and provide construction services for a new water treatment plant. The facility was designed to provide treatment for the removal of iron and manganese for three of the Town’s existing groundwater wells.
The water treatment plant will treat 2.5-million gallons per day using GreensandPlus™ media and six, twelve-foot diameter pressure filters. The treatment process includes potassium permanganate for oxidation, sodium hydroxide for pH adjustment, and an ortho/polyphosphate blend for corrosion control. Sodium hypochlorite is also added for disinfection and oxidation. The plant includes a 60,000-gallon in-plant clearwell for contact time and backwash supply. A forced draft steel aerator is provided to strip carbon dioxide in the raw water and raise the raw water pH to approximately 7; and a backwash recovery system is comprised of two backwash water decant/recycle tanks to increase the overall recovery of the plant.
Design elements of the treatment facility include a bathroom, laboratory area, fully automated SCADA system integration with the existing distribution system including two other active wells, site piping, and construction of a paved driveway and gravel access road along the perimeter of the residual sand drying beds. MEP systems featured a multi-zone hydronic heating served by a high-efficiency gas fired condensing boiler, dedicated laboratory and chemical exhaust systems. The SCADA room has a dedicated cooling system and the main treatment hall is heated, ventilated and dehumidified to reduce condensation from forming in the water treatment pipes and equipment.