Experience with GAC Adsorbers and Fluidized Bed Reactivation at Manchester WaterWorks

摘要

Manchester, New Hampshire is a moderate-sized community approximately 60 milesnorth of Boston. Water supply to the population is comprised of various sources. The major community supply is Manchester Water Works (MWW) with a distribution network of some 30,000 customers and 400 miles of main. Lake Massabesic was chosen for a source of supply based upon its proximity to the city, its relative abundance, and its relatively high quality. Today, Lake Massabesic is still the sole supply utilized, however quality and abundance are currently being stressed due to increased demands and population growth from the region. Manchester consulted with Whitman and Howard Engineering of Wellesley Massachusetts to design and construct a modern water treatment facility in the early 1970s. GAC use has proven to be feasible and cost effective in Manchester, N.H. The addition of a fluidized bed reactivation system in 1979 has proven to be a cost effective solution to the problem of GAC replacement options.