AWWA MTC53719

Membrane filtration processes, microfiltration and ultrafiltration, are nowmainstream filtration processes competing with conventional technologies. Waterproviders are selecting membranes because of their lower cost trends and superiortreatment performance of a wide variety of source waters. Many new large capacitymunicipal projects are now under construction in North America, and even more arebeing planned. Water utility decision makers require meaningful and accurateconstruction and operation and maintenance (O&M) cost data to determine thefeasibility of membrane technologies. Several membrane filtration facilitiesconstructed over the past five years in the United States and Canada and thathave initial capacities greater than 0.3 mgd are included in this cost study. Theincluded plants treat both raw surface and groundwater supplies with varyingwater quality characteristics. In all of the plants, membrane filtration is theprimary treatment process used for turbidity and pathogen removal. Most of theplants typically use direct filtration and have a design flux of approximately 45to 55 gallons per day per square foot of membrane surface area (gpd/sf). Thenames and locations of the plants are included. Membrane equipment include someor all of the following components depending on the membrane manufacturer:membrane modules; clean-in-place (CIP) equipment; feed or permeate pumps;backwash pumps; blowers; instrumentation and control equipment; and, tanksassociated with cleaning and backwashing. While the cost of the membrane modulesis proportional to the design capacity and flux of the system, the cost of theother components has a significant economy of scale. Includes reference, table, figures.

Product Details

Edition:

Vol. - No.

Published:

05/01/2001

Number of Pages:

8

File Size:

1 file , 220 KB