Inline Chlorinator for Potable Water Systems in Low-Resource Settings
Publication: Journal of Environmental Engineering
Volume 147, Issue 7
Abstract
Inline chlorination technologies can provide a flexible option for water treatment in a variety of scenarios in low-resource settings. However, limited efficacy data on chlorine dosing and the resulting free chlorine residual (FCR) levels under controlled conditions increases the barrier to use for both field practitioners and end users. In this paper, we report FCR data on the Aquatabs Flo device, a passive inline chlorinator, for common operating conditions including flow rates between 2 and (0.5 and ), pressure levels between 137.9 and 551.6 kPa (20 and 80 psi), and device positions (horizontal, tilted left or right, leaning forward or backward). In addition, we demonstrate a modification to the device to enable point-of-collection applications. Results suggest that variations in pressure do not influence FCR values, whereas device positions (i.e., misalignments) do. Finally, device modifications can reduce the FCR values for point-of-collection applications. The data reported here can be used to build decision support tools for field practitioners.
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Data Availability Statement
All data, models, or code that support the findings of this study are available from the corresponding author upon reasonable request.
Acknowledgments
We would like to thank the Voth and Gaeddert Facilities for their support and Medentech for the donation of the Aquatabs Flo devices.
References
Medentech. 2016. Working to improve water quality for over 25 years: A presentation on our range of water purification products. Wexford, Ireland: Medentech.
Pickering, A. J., Y. Crider, S. Sultana, J. Swarthout, F. G. Goddard, S. Anjerul Islam, S. Sen, R. Ayyagari, and S. P. Luby. 2019. “Effect of in-line drinking water chlorination at the point of collection on child diarrhoea in urban Bangladesh: A double-blind, cluster-randomised controlled trial.” Lancet Global Heal. 7 (9):1247–1256. https://doi.org/10.1016/S2214-109X(19)30315-8.
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© 2021 American Society of Civil Engineers.
History
Received: Feb 2, 2021
Accepted: Mar 11, 2021
Published online: May 7, 2021
Published in print: Jul 1, 2021
Discussion open until: Oct 7, 2021
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