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Solar drying of faecal sludge from pit latrines in a bench-scale device

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conference contribution
posted on 13.11.2018, 10:02 by Santiago Septien Stringel, Tenday Mugauri, Anusha Singh, Freddie Inambao
Solar thermal energy for drying proposes could be employed as a cost-effective solution for faecal sludge treatment. In despite of its great potential, this option has not been enough applied, and there is a lack of knowledge in literature to allow for its emergence. The present work aims at providing data and knowledge to the sanitation practitioners in solar drying, through an experimental work with a custom-designed bench-scale apparatus. Depending on the experimental conditions, the moisture content of the sludge could be reduced from 60% to 20% after 5 hours of solar drying, with an average drying rate varying between 0.5 to 0.8 kg/h/m2. The most favourable conditions for drying were during sunny weather conditions and for lower thickness of sample. A crust formation was observed to occur at the top of the sludge and may explain the lower drying rates than expected under certain conditions.

Funding

The authors would like to extend thanks to the Water Research Commission for funding this project.

History

School

  • Architecture, Building and Civil Engineering

Research Unit

  • Water, Engineering and Development Centre (WEDC)

Published in

Transformation towards sustainable and resilient WASH services: Proceedings of the 41st WEDC International Conference

Pages

? - ? (6)

Citation

SEPTIEN STRINGEL, S. ... et al., 2018. Solar drying of faecal sludge from pit latrines in a bench-scale device. IN: Shaw, R.J. (ed). Transformation towards sustainable and resilient WASH services: Proceedings of the 41st WEDC International Conference, Nakuru, Kenya, 9-13 July 2018, Paper 3008, 6 pp.

Publisher

© WEDC, Loughborough University

Version

VoR (Version of Record)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Publication date

2018

Notes

This is a conference paper.

Language

en

Location

Nakuru, Kenya

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