Comparative analysis of the filtron and biosand water filters

One Liner: 
BSFs are less effective than ceramic pot filters in removing bacteria. However, ceramic pot filters have very low flow rates and are susceptible to breakage. Neither technology is perfect.
TitleComparative analysis of the filtron and biosand water filters
Publication TypeUnpublished
Year of Publication2004
AuthorsDuke, WF, Nordin, R, Mazumder, A
Date Published2004
InstitutionUniversity of Victoria
AbstractLow cost water filters designed for use in individual households in developing countries are recognized as an alternative to municipal water treatment systems. The two most commonly promoted filters in developing countries are the Filtron ceramic filter and the biosand intermittent slow sand filter. In this study, seven liters of pond water from several ponds in the greater Victoria area were put through each of these filters for 30 consecutive days. Turbidity, TOC, DOC, E. coli and total coliform counts were recorded for the source water and for the water produced by each filter. Flow rates and frequency of cleaning were also recorded. The data revealed that both filters lowered the source water's turbidity, TOC, DOC, and bacterial counts significantly. The Filtron filter was very effective in removing bacteria, but it was limited by flow rates of only 1-2 liters per hour as well as the need for frequent cleaning. The biosand filter produced flow rates of about 20 liters per hour and did not require cleaning during the study period, but it was less effective in removing bacteria.