Articles | Volume 10, issue 2
Research article
06 Jul 2017
Research article |  | 06 Jul 2017

Quantity and quality benefits of in-service invasive cleaning of trunk mains

Iftekhar Sunny, Stewart Husband, Nick Drake, Kevan Mckenzie, and Joby Boxall

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Online data processing for proactive UK water distribution network operation
J. Machell, S. R. Mounce, B. Farley, and J. B. Boxall
Drink. Water Eng. Sci., 7, 23–33,,, 2014

Cited articles

AWWA: M28 Rehabilitation of Water Mains, 3rd Edn., American Water Works Association, 132 pp., 2014.
Boxall, J. and Saul, A.: Modelling Discoloration in Potable Water Distribution Systems, J. Environ. Eng., 131, 716–725,, 2005.
Boxall, J., Skipworth, P. J., and Saul, A.: A novel approach to modelling sediment movement in distribution mains based on particle characteristics, in: Water Software Systems: V. 1: Theory and Applications (Water Engineering & Management), Hertfordshire, UK, 263–273, 2001.
Boxall, J., Saul, A., Gunstead, J. D., and Dewis, N.: Regeneration of Discolouration in Distribution Systems, World Water & Environmental Resources Congress 2003, Philadelphia, Pennsylvania, United States, 1–9, 2003a.
Boxall, J., Skipworth, P. J., and Saul, A. J.: Aggressive flushing for discolouration event mitigation in water distribution networks, Wa. Sci. Technol., 3, 179–186, 2003b.
Short summary
This paper presents an assessment of quantity and quality performance of a trunk main cleaning using ice slurry pigging intervention. Hydraulic calibration showed a 7x roughness height reduction after ice slurry pigging, although turbidity response due to carefully imposed shear stress increase remained significant, indicating loose materials had not been fully removed from the pipe wall. Due to ongoing material accumulation, one-off intervention may not be sufficient to manage the quality risk.