Category:Water filters: Difference between revisions

Revision as of 03:37, 9 September 2009

The following 35 pages are in this category, out of 35 total.

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 {{copyvio|from http://www.meribah-ram-pump.com/downloads/Flyer-Waterfilter.pdf - have the copyright holders explicitly allowed its use under CC-BY-SA?}}
-==The Results==
-Overall, studies have shown that the Bio Sand Filter removes:
-* > 97% of E. coli - an indicator of fecal contamination (Duke, 2006; Stauber, 2006)
-* > 99% of protozoa and helminths (Palmateer, 1999)
-* 80-90% of viruses (Stauber, 2005)
-* 50-90% of organic and inorganic toxicants (Palmateer, 1999)
-* 90-95% of iron (Ngai, 2007)
-* Most suspended sediments
-Based on slow sand filter research, the bio sand filter may also remove some heavy metals (Muhammad, 1997; Collins, 1998).
-There is also a design modification known as the KanchanTM Arsenic Filter that is effective in removing both pathogens and 85-90% of arsenic from source water (Ngai, 2007).
 ==Links==