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
- Biosand Filter
- Clean Drinking Water
- Easy to Use
- Self contained Maintenance
- For Everybody
- No Following Costs
- Reliable
Pages in category "Water filters"
The following 35 pages are in this category, out of 35 total.
C
H
L
S
- Seradisc Variable Screen Filter
- She-ba low cost water filters for rural households
- She-ba low cost water filters for rural households/ko
- She-ba low cost water filters for rural households/vi
- Slow sand filtration
- Slow sand filtration water treatment plants
- Slow sand filtration/kn
- Slow sand filtration/ko