TY - GEN
T1 - Effect of contaminated filtration sand on performance of household biosand filters
AU - White, Caleb
AU - Sangster, Jodi L.
AU - Joy, Stacey R.
AU - Dunekacke, Amanda
AU - Pirog, Matthew
AU - Jones, Elizabeth G.
AU - Bartelt-Hunt, Shannon L.
PY - 2013
Y1 - 2013
N2 - Household biosand filters are one point-of-use water treatment technology that can be used to provide clean drinking water to people living in communities without access to improved water supplies. There have been several studies investigating the importance of design variables on biosand filter performance, and biosand filters have been demonstrated to improve health outcomes in communities were they have been deployed. In constructing the biosand filter, it is recommended that sand from a rock quarry or gravel pit be used as filtration sand, as it is likely to be uncontaminated by waterborne pathogens. However, due to the cost or availability of sand from these sources, river sand may be used for filtration sand in a biosand filter. If the river water is contaminated with pathogens, it is likely that the sand will also be contaminated. In this study, we investigated the use of contaminated river sand on removal efficiencies of E. Coli and total coliforms from a biosand filter in the laboratory and installed in a community in Madagascar. We found that in the laboratory, the biosand filter constructed with contaminated sand had lower removal efficiencies than a filter constructed with clean sand over a 26 day period. In the field, we found that a biosand filter loaded with filtration sand obtained from a contaminated river performed well with removal efficiencies greater than 95%.
AB - Household biosand filters are one point-of-use water treatment technology that can be used to provide clean drinking water to people living in communities without access to improved water supplies. There have been several studies investigating the importance of design variables on biosand filter performance, and biosand filters have been demonstrated to improve health outcomes in communities were they have been deployed. In constructing the biosand filter, it is recommended that sand from a rock quarry or gravel pit be used as filtration sand, as it is likely to be uncontaminated by waterborne pathogens. However, due to the cost or availability of sand from these sources, river sand may be used for filtration sand in a biosand filter. If the river water is contaminated with pathogens, it is likely that the sand will also be contaminated. In this study, we investigated the use of contaminated river sand on removal efficiencies of E. Coli and total coliforms from a biosand filter in the laboratory and installed in a community in Madagascar. We found that in the laboratory, the biosand filter constructed with contaminated sand had lower removal efficiencies than a filter constructed with clean sand over a 26 day period. In the field, we found that a biosand filter loaded with filtration sand obtained from a contaminated river performed well with removal efficiencies greater than 95%.
KW - E. Coli
KW - biosand filter
KW - drinking water
KW - point-of-use treatment
UR - http://www.scopus.com/inward/record.url?scp=84893901022&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84893901022&partnerID=8YFLogxK
U2 - 10.1109/GHTC.2013.6713688
DO - 10.1109/GHTC.2013.6713688
M3 - Conference contribution
AN - SCOPUS:84893901022
SN - 9781479924028
T3 - Proceedings of the 3rd IEEE Global Humanitarian Technology Conference, GHTC 2013
SP - 243
EP - 247
BT - Proceedings of the 3rd IEEE Global Humanitarian Technology Conference, GHTC 2013
PB - IEEE Computer Society
T2 - 3rd IEEE Global Humanitarian Technology Conference, GHTC 2013
Y2 - 20 October 2013 through 23 October 2013
ER -