Conference Papers | 2009 Conference Papers

CHOOSING THE RIGHT ONLINE FLUORIDE ANALYSER

John Day, District Manager, Central Water, Goulburn Valley Water

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ABSTRACT

Beginning in 2003 Goulburn Valley Water (GVW) undertook a project to select preferred online instrumentation, in an attempt to identify which analysers are the right equipment for the right application. From this project several analysers were chosen as a suitable equipment application for the online measurement of Turbidity, pH, Chlorine, EC, Streaming Current and Fluoride. In 2007 GVW concluded that there were too many choices of analyser, and a preferred list was decided on to reduce the selection to just two of each group of analyser. The following paper reviews a trial of four online analysers for the measurement of Fluoride at the Shepparton Water Treatment Plant. From the trial, two meters were to be chosen as the best fit application for the preferred list. This paper also seeks out to answer the question on the need to have Total Ionic Strength Adjustment Buffer (TISAB) as an online reagent or not. The need for such a trial was highlighted as GVW at the time were undertaking tendering for three new fluoride dosing plants, and the selection of an analyser is critical to its operation. Overarching all of this process was the release of the new code of practice for fluoridation by the Department of Human Services, Victoria.