Article ID Journal Published Year Pages File Type
10386220 Desalination 2005 4 Pages PDF
Abstract
A study of cleaning a Bulgarian OF 60 PAN spiral-wound module was carried out on an ultrafiltration unit(Millipore, USA). Chemical cleaning of the membrane with a 0.25% solution of sodium metabisulfite did not prevent biological fouling. When treated with a 1% solution of formaldehyde, membrane fouling was diminished and the ultrafiltrate obtained contained a significantly lower number of microorganisms and colloid formations including iron and humic acids. After treatment with the two cleaning agents, the membrane maintained its flux for the water studied within a range of 1.58 to 1.64 m3/m2/d. The effect on the contaminants to be removed was also found to be comparatively constant. Membrane selectivity remained constant at different permeate yields.
Related Topics
Physical Sciences and Engineering Chemical Engineering Filtration and Separation
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