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Author (up) Juby, G.J.G.; Schutte, C.F.
Title Membrane Life in a Seeded-slurry Reverse Osmosis System Type Journal Article
Year 2000 Publication Water Sa Abbreviated Journal
Volume 26 Issue 2 Pages 239-248
Keywords mine water treatment desalination
Abstract Membrane replacement can be a major operating cost of a membrane plant. During the development of a novel desalination technique (the SPARRO process) for treating calcium sulphate scaling mine waters the expected life of tubular cellulose acetate membranes operating in the seeded-slurry mode was investigated.During four operating phases of the plant over a five-year period more than 9 000 h of operating data were obtained. Performance data showed that each operating phase was dominated by either membrane fouling or membrane hydrolysis. Membrane fouling was observed to begin near the front-end of the membrane stack and proceed towards the back. Hydrolysis, on the other hand, occurred first in the tail end of the stack and moved backwards towards the Front end modules. Although two detailed membrane autopsies were carried out no definitive statement can be made in respect of the causes of either membrane hydrolysis or membrane fouling. However, suggestions are presented to explain the observed fouling phenomenon in relation to the turbidity of the pretreated feed water and the presence of chlorine. It is proposed that the presence of radioactive isotopes in the mine water which become concentrated in the process contributes to the observed membrane hydrolysis. A membrane life of up to two years is projected for an improved pretreatment arrangement.
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Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0378-4738 ISBN Medium
Area Expedition Conference
Notes Membrane Life in a Seeded-slurry Reverse Osmosis System; Isi:000087101400013; file:///C:/Dokumente%20und%20Einstellungen/Stefan/Eigene%20Dateien/Artikel/9715.pdf; AMD ISI | Wolkersdorfer Approved no
Call Number CBU @ c.wolke @ 9715 Serial 8
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