Full Description

The application of membranes in the municipal water market is widely perceived in theindustry as a new technology. However, there are ultrafiltration plants that have beensuccessfully operating for many years. One of these plants is located in Littleton,Massachusetts.The ultrafiltration (UF) plant in Littleton was commissioned in 1997 to remove high levels of iron andmanganese from the well water, as well as to reduce the risk of contamination bymicroorganisms. The plant has a capacity of 1.4 MGD. The UF system was supplied byKoch Membrane Systems, and contains four primary skids, with 50 hollow fiber UFcartridges on each skid. All of the reject from the primary skids is sent to a secondaryskid with 20 hollow fiber UF cartridges. The original cartridges from all skids (primaryand secondary) have been in operation for the last seven years.This paper describes the Littleton plant from design phase to current operation. Thespecific flux, chemical cleaning frequency, backflush regimen, and backflush recoverysystem are discussed. The results of recent autopsies that show that the membranes arestill in excellent condition are presented. Includes 2 references, figures.

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Edition: Vol. - No. Published: 03/01/2005 Number of Pages: 12File Size: 1 file , 1 MB