The resuspension potential method: Yarra Valley waters novel approach to routine mains cleaning

摘要

Routine cleaning of water mains is frequently employed by water utilities around the world asna means of managing common water quality issues. When employed correctly, water mainsncleaning can be effective in removing loosely deposited sediments and bio-films that cause waterndiscolouration, coliform regrowth and unpalatable tastes and odours. Despite its long history innthe water industry, water supply practitioners continue to use highly subjective mechanisms tonidentify when, where and how much to spend on their mains cleaning programs. This paperndiscusses the benefits of using the Resuspension Potential Method, an objective means ofnplanning and implementing mains cleaning, to achieve an optimum outcome for both the waterncompany and its customers. Since 2005, Yarra Valley Water has undertaken ResuspensionnPotential Method measurements in 13 of its water quality zones to gain a better understanding ofnsediment accumulation rate in the zones over time. Ultimately the information will be used fornmore effective planning and proactive implementation of the mains cleaning programme.