Effects of Pre-Ozonation of High Humic Content Waters on Direct Filtration in a Pilot Plant

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Title Effects of Pre-Ozonation of High Humic Content Waters on Direct Filtration in a Pilot Plant
Author Amirsardari Darjaz, Younes; Yu, Bofu; Williams, Philip
Journal Name Environmental Technology
Year Published 1998
Place of publication UK
Publisher Selper
Abstract Direct filtration and the effects of pre-ozonation on direct filtration performance were evaluated and compared with conventional water treatment performance in a pilot plant study. Performance measures including coagulant demand, turbidity, colour, total organic carbon, head loss development, filter run time, back wash water consumption, filtration solids volume and iron and manganese were examined for a water source with low turbidity and high organic matter content. The optimal coagulant dosage established for in-line direct filtration was much lower than that required for conventional treatment of the same raw water. Direct filtration preceded by ozonation achieved similar, or substantially higher, turbidity removal efficiencies with a significantly lower alum coagulant dosage. Pre-ozonation was effective in lowering turbidity, colour, head loss development and iron and manganese levels but was not significant in removing TOC. Pre-ozonation increased filter run time by about 7% when compared with the case of no ozonation treatment. The back wash consumption was 5% of total water produced and solids volume produced by coagulation and direct filtration alone was 8% of the back wash water used. There were no significant differences for the latter two parameters by pre-ozonation treatment.
Peer Reviewed Yes
Published Yes
Alternative URI http://dx.doi.org/10.1080/09593331908616768
Volume 19
Page from 1103
Page to 1110
ISSN 0959-3330
Date Accessioned 1999-01-01
Date Available 2010-07-06T06:59:24Z
Language en_AU
Research Centre Atmospheric Environment Research Centre
URI http://hdl.handle.net/10072/31123
Publication Type Article in Scholarly Refereed Journal
Publication Type Code c1

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