AWWA MTC61112

This slide presentation outlines information on the City of St. Helens membrane project. Topics covered include: St. Helens background; water quality; piloting and procurement; flux impact cleaning frequency; pilot establishes economics; elements of procurement; membrane system information; operating parameters; comparison of Pall and Aquasource transmembrane pressures - St. Helens Pilot Test; St. Helens design run raw and permeate water total particle counts (>2um); membrane plant equipment costs, 8 mgd plant with BW water recovery; and, annual costs excluding labor, 8 mgd membrane plant. Includes tables, figures.