The 8 million gallons per day (MGD) Kingston, N.Y., Water Treatment Plant has been in operation for 103 years. Treatment consists of chlorine disinfection, direct-in-line filtration with alum coagulation and corrosion control through the addition of lime.
The 5-h.p. lime slurry feed pump had always been oversized for its application. “Our slurry pump was a maintenance nightmare,” says Chief Plant Operator Bruce Mitchell. “We’d be lucky if we got three or four months service from the pump’s shaft sleeves. And those are very expensive.”
The existing centrifugal pump was replaced with a S26 Model Chemtube® Peristaltic Pump System (PPS) from Siemens Wallace & Tiernan Products group. The pump operates around the clock, feeding between 150 to 500 lbs. per day of lime, depending on water quality and the time of year.