Hydraulic conditioning to manage potable water discolouration

SHARPE, Rebecca, BIGGS, Catherine and BOXALL, Joby (2019). Hydraulic conditioning to manage potable water discolouration. Proceedings of the Institution of Civil Engineers - Water Management, 172 (1), 3-13.

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Abstract

Results are reported from studies conducted using a unique laboratory-based, full-scale, temperature-controlled pipe facility to examine the impact of conditioning shear stress on discolouration risk, as characterised by bulk water samples (turbidity, iron and manganese) and biofilm pipe wall measurements. The facility uniquely allowed for replication of the dynamics of an operational network but with rigorous control, thus yielding fully representative results overcoming the limitations of bench-scale or operational studies. The effect of the daily variation in flow (and boundary shear stress) was observed to be greater than the effect of the average daily flow rate at reducing discolouration risk. This is useful for informing operation and maintenance strategies, specifically that regularly imposing cycles of flow variation are more effective than increasing total average flow rates at limiting discolouration risk. The application of such knowledge aids the development of cost-effective, proactive, operational interventions to manage discolouration.

Item Type:	Article
Uncontrolled Keywords:	Water supply
Departments - Does NOT include content added after October 2018:	Faculty of Social Sciences and Humanities > Department of Natural and Build Environment
Identification Number:	https://doi.org/10.1680/jwama.16.00038
Page Range:	3-13
Depositing User:	Rebecca Sharpe
Date Deposited:	18 Oct 2017 11:07
Last Modified:	18 Mar 2021 06:49
URI:	https://shura.shu.ac.uk/id/eprint/17071

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