Sabogal-Paz, LP;
Campos, LC;
Bogush, A;
Canales, M;
(2020)
Household slow sand filters in intermittent and continuous flows to treat water containing low mineral ion concentrations and Bisphenol A.
Science of the Total Environment
, 702
, Article 135078. 10.1016/j.scitotenv.2019.135078.
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Sabogal-Paz et al_2019_Household slow sand filters in intermittent and 1 continuous flows to treat.pdf - Accepted Version Download (1MB) | Preview |
Abstract
Household slow sand filter (HSSF) has been used as an alternative to drinking water treatment in rural communities worldwide; however, its performance to treat influent water with quality similar to rainwater still needs further studies. Rainwater presents low pH and slight mineral ion concentrations, an aspect that can modify the filter media and consequently the HSSF efficiency. Furthermore, house roofs used in rainwater harvesting can be made of plastic. Therefore, it can introduce chemicals such as Bisphenol A (BPA) in the water. In this context, two pilot-scale HSSFs operated in continuous and intermittent flows were evaluated to treat water containing BPA and low mineral ion concentrations in order to assess the filter performance. Filter media leaching was noticed in the trials; thus, filter media and construction material selection must be carefully evaluated to eliminate risks of pollutant occurrence in drinking water. Operational differences between continuous and intermittent flows influenced the HSSF efficiency for BPA and DOC removals; even so, the filters' performance was low probably due to the slow schmutzdecke development. According to tracer test results, HSSF can be classified as a plug flow reactor and strategies to improve its hydraulic performance are not required.
| Type: | Article |
|---|---|
| Title: | Household slow sand filters in intermittent and continuous flows to treat water containing low mineral ion concentrations and Bisphenol A |
| Location: | Netherlands |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.scitotenv.2019.135078 |
| Publisher version: | https://doi.org/10.1016/j.scitotenv.2019.135078 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Biosand filter, Decentralised treatment, Drinking water, Endocrine disruptor, Rainwater |
| 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/10086166 |
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