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International Journal of Environmental Research
University of Tehran
ISSN: 1735-6865 EISSN: 1735-6865
Vol. 2, No. 3, 2008, pp. 269-274
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Bioline Code: er08035
Full paper language: English
Document type: Research Article
Document available free of charge
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International Journal of Environmental Research, Vol. 2, No. 3, 2008, pp. 269-274
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Preozonation and Prechlorination Effects on TOC Removal by Nanofiltration in Water Treatment
Tobiason, J. E.; Nabi bidhendi, G.H.R.; Torabian, A.; Ghadimkhani, A. A. & Etemadi, H.
Abstract
In this study, NF membrane was used for surface water treatment. The rejection of organic material, measured as Total organic carbon (TOC), by Nanofiltration was examined. The effects of application of pre-ozonation and pre-chlorination on TOC removal are discussed and their performances are compared with the performances of Nanofiltraion system without pretreatment process. In NF, natural organic rejection is high and no pre-treatment are required. Coagulation targets large hydrophobic organics which foul NF membranes by precipitation and gel layer formation. The results showed that TOC removal in Preozonation-coagulation was higher than prechlorination-Coagulation. In addition pretreatment increases Nanofiltration efficiency.
Keywords
Water treatment, Nanofiltration, Preozonation, Prechlorination, Total Organic Carbon removal
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© Copyright 2008 - Graduate Faculty of Environment University of Tehran Alternative site location: http://ijer.ut.ac.ir/
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