Treatment of Pittsfield Water by Krofta Sandfloat Process System

摘要

Raw water from Ashley and Farnham Reservoirs in Berkshire County, Massachusetts was treated by a newly developed Sandfloat process system consisting of chemical flocculation, dissolved air flotation and sand filtration. Turbidity, color, trihalomethane formation potential, UV absorbance, coliform bacteria, iron, manganese, lead and Giardia cyst-sized particles (in terms of microscopic particle count) were significantly removed from the City of Pittsfield's raw water supply. The Sandfloat process easily met all the U.S. Environmental Protection Agency and the Massachusetts Drinking Water Standards. The report describes the new Pittsfield Water Treatment System which serves over 50,000 people and many industrial plants. The entire system consists of six Sandfloats Type 49, each having a maximum capacity of 6.25 MGD.