Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.13/802864

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Title
The efficacy of ozone/BAC in reducing disinfection by-product precursors from drinking water
Author/Creator
Yan, Yaode;  Jakubowski, Craig;  Thompson, Paul;  Dennis, Peter;  Evans, Geoffrey M.
Institution
The University of Newcastle. Faculty of Engineering & Built Environment, School of Engineering
Description
The ozone and biological activated carbon (Ozone/BAC) process is known for being able to provide a wide range of drinking water treatment benefits including destruction of organic contaminants such as taste and odour compounds, algal toxins, pesticides and herbicides. However, its ability to remove disinfection by-product (DBP) precursors is often found to be dependent on water characteristics. This paper presents results from our recent Ozone/BAC pilot plant investigation. The main objective of this work was to assess the efficacy of this process in reducing DBP precursors for one of the most challenging raw water sources in Australia. The pilot plant was operated in the intermediate ozonation mode, with its feed water drawn from the settled water of a full-scale treatment plant operating in the enhanced coagulation mode. The Ozone/BAC process was found to be capable of providing significant removal of DBP precursors and hence reductions in trihalomethane (THM) formation. The removal efficiency was however found to be highly dependent on the empty bed contact time (EBCT) used, with longer EBCTs yielding significantly better removal. Our results highlight the importance of conducting pre-design testing to prove the suitability of this process for DBP precursor removal for a specific water to be treated.
Relation
Chemeca2008. Chemeca2008: Towards a Sustainable Australasia (Newcastle, N.S.W. 28 September - 1 October, 2008) p. 221-231
Relation
http://www.chemeca2008.com/abstract/136.asp
Date
2008
Publisher
Engineers Australia
Keyword(s)
ozone;  biological activated carbon (BAC);  drinking water;  contaminants
Resource Type
conference paper
Identifier
http://hdl.handle.net/1959.13/802864
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Subject
"The efficacy of ozone/BAC in reducing disinfection by-product precursors from drinking water"
 
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