Quispe, JIB;
Campos, LC;
Mašek, O;
Bogush, A;
(2023)
Optimisation of biochar filter for handwashing wastewater treatment and potential treated water reuse for handwashing.
Journal of Water Process Engineering
, 54
, Article 104001. 10.1016/j.jwpe.2023.104001.
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Abstract
Portable handwashing facilities help fight the transmission of water-borne diseases. However, in places lacking piped drainage systems, handwashing wastewater (HW) is commonly discarded into the ground. This harms the environment and public health and wastes reusable water. This study optimised the biochar filtration parameters such as particle size (0.5–2 mm), filter depth (15–30 cm) and flow rate (1–2.5 L/h) to remove colour, turbidity, phosphates and E. coli from HW using Response Surface Methodology. Fifteen configurations studied the impact of filtration parameters on pollutant removal. Quadratic models provided the best fit for pollution removal data. Optimal conditions were 1.25 mm particle size, 30 cm filter depth and 1 L/h flow rate, with predicted removals of 97.06, 97.50, 82.67 and 73.06 % for colour, turbidity, phosphates and E. coli, respectively. Biochar filter performance under optimal conditions validated the models. Actual removal efficiencies of 97.63, 99.85, 85.94 and 76.08 % for colour, turbidity, phosphates and E. coli, respectively, aligned closely with predicted values. Treated HW quality complied with several international water quality standards. Optimising biochar filtration is crucial for integrating this technology into portable handwashing facilities with potential water reuse, benefiting communities in developing countries with limited handwashing infrastructure and access to water.
| Type: | Article |
|---|---|
| Title: | Optimisation of biochar filter for handwashing wastewater treatment and potential treated water reuse for handwashing |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.jwpe.2023.104001 |
| Publisher version: | https://doi.org/10.1016/j.jwpe.2023.104001 |
| Language: | English |
| Additional information: | © 2023 The Authors. Published by Elsevier Ltd. under a Creative Commons license (http://creativecommons.org/licenses/by/4.0/). |
| Keywords: | Biochar filtration, Filtration parameters, Handwashing facilities, Synthetic greywater, Water cleaning |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Civil, Environ and Geomatic Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10174500 |
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