Document Detail

Characterisation of the biosand filter for E. coli reductions from household drinking water under controlled laboratory and field use conditions.
MedLine Citation:
PMID:  17037125     Owner:  NLM     Status:  MEDLINE    
More than a billion people in the developing world lack access to safe and reliable sources of drinking water. Point of use (POU) household water treatment technology allows people to improve the quality of their water by treating it in the home. One emerging POU technology is the biosand filter (BSF), a household-scale, intermittently operated slow sand filter. Laboratory and field studies examined Escherichia coli reductions achieved by the BSF. During two laboratory studies, mean E. coli reductions were 94% and they improved over the period of filter use, reaching a maximum of 99%. Field analysis conducted on 55 household filters near Bonao, Dominican Republic averaged E. coli reductions of 93%. E. coli reductions by the BSF in laboratory and field studies were less than those typically observed for traditional slow sand filters (SSFs), although as for SSFs microbial reductions improved over the period of filter use. Further study is needed to determine the factors contributing to microbial reductions in BSFs and why reductions are lower than those of conventional SSFs.
C E Stauber; M A Elliott; F Koksal; G M Ortiz; F A DiGiano; M D Sobsey
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  Water science and technology : a journal of the International Association on Water Pollution Research     Volume:  54     ISSN:  0273-1223     ISO Abbreviation:  Water Sci. Technol.     Publication Date:  2006  
Date Detail:
Created Date:  2006-10-12     Completed Date:  2006-12-19     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9879497     Medline TA:  Water Sci Technol     Country:  England    
Other Details:
Languages:  eng     Pagination:  1-7     Citation Subset:  IM    
University of North Carolina-Chapel Hill, Dept of Environmental Sciences and Engineering, 27599 Chapel Hill, NC, USA.
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MeSH Terms
Colony Count, Microbial
Escherichia coli / isolation & purification*
Filtration / methods*
Water Microbiology*
Water Supply*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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