Sunday, November 01, 2009 9:31:00 AM
WRc has started a Portfolio project in collaboration with three water companies to provide a cost effective method for monitoring dissolved oxygen (DO) to give information on water quality risk and mixing in networks.
Previous work has shown that a reduction in DO can be associated with risk to water quality, and impacts on customers, due to either microbial growth or active corrosion on pipe walls. Increases in DO identify points of air ingress with risk of subsequent formation of “white water” (micro bubbles of air) at the tap.
The project builds on work which identified reliable DO instrumentation and developed an approach for deriving residence time distributions from trends in DO.
This current project CP357: Implementing a DO Based Tool for Monitoring Distribution Networks will deliver a spreadsheet tool and detailed methodologies for using DO trend data to provide new and valuable information on quality risk and mixing in distribution networks.