Full Description

This slide presentation outlines the start-up experiences at two Minneapolis Water Works filtration plants, Columbia Heights and Fridley. Both have conventional pretreatment and the key ultrafiltration features of both include: Warm Water Capacity = ~ 70 mgd;Cold Water Capacity = ~ 40 mgd; 36 UF Units;UF membrane by Norit / Xflow; UF equipment by GE Ionics; and,Pressure (TMP) = 5 to 12 psid (max 15); flux adjusted by feed water temperature - Constant Flux, Units in rotating stand-by for low flow;Cleaning Methods - Water Backwash (no air),Chemically Enhanced Backwash (CEB), Dose, Soak (no recirculation); andEnhanced CEB. Topics covered include: operation of the membrane filter, preparing for start-up/operation; construction issues; membrane loading; Preservative Removal disinfection; testing of the control system and the membrane system; hydraulic issues; wet commissioning without membranes; membrane integrity; acceptance testing; cleaning methods; permeability; fiber breakage; and, full scale results. Includes figures.

Product Details

Edition: Vol. - No. Published: 03/01/2007 Number of Pages: 64