Water purification in rural communities with biosand filters
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The document summarizes information about biosand water filters, which are a low-cost method to purify water for rural communities that lack access to clean water. Biosand filters can remove up to 98% of contaminants like bacteria and parasites from water using only natural processes. They are an affordable alternative to commercial water filters, costing around $60 compared to $1,000 for other options. Biosand filters provide a sustainable way to improve water quality and safety in isolated areas with high rates of waterborne illness and death.
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Water purification in rural communities with biosand filters
- 1. Water purification in rural communities
- 2. according to the World Health Organization (WHO) more than 700 million people worldwide have lack of access to permanent sources of potable water Photos: Fundamor
- 3. Mostly these people live in poor urban areas and fields, in developing countries and consuming untreated water Photos: Fundamor
- 4. They take water from the rivers, lakes or rain and keep it in inadequate storage and drink it without treatment Photos: Fundamor
- 5. Rain water harvesting and inadequate storage Photos: Fundamor
- 6. unsafe water causes the death of 2.5 million people worldwide each year
- 7. 95 % these deaths occur in poor communities 90 % of these deaths hit vulnerable population such as children and old people 99 % of these deaths can be avoided Photos: Ensil Gómez / Fundamor / South Asia Pure Water Initiative Inc.
- 9. The Biosand filter was developed in Calgary Univertity (Canada) in 90’s and had supplied clean water to millons of people
- 10. economic filtered 98 % solids sucessfull Biosand filter advantages resistant Low and maintenance durable
- 11. biosand filter removes pathogens and turbidity Ganesh Harijan, Nepal Photo: Dr. Tommy Ngai (Cawst)
- 12. Limitations
- 13. The filter not remove dissolved compounds (salts, fluoride, arsenic) Although it has a low price many people can not buy it (about U.S. $ 60.00) Should work three weeks before it is fully effective
- 15. Biosand filter tight lid (wood, plastic, etc.) perforated diffuser plate pipe for potable water outlet Schmutzdecke (dirt blanket) fine sand separation gravel drainage gravel collector container (with lid) Fuente: CAWST, Canadá
- 16. Biosand filter spacer mesh Fuente: Inagor, Colombia
- 17. operation
- 18. Biosand filter poured a bucket of water rich in oxygen. (even cloudy) Fuente: CAWST, Canadá
- 19. Biosand filter water flows through the perforated diffuser plate and combined with the supernatant water layer is biological and with less oxygen and nutrients Fuente: CAWST, Canadá
- 20. Biosand filter water enters into the sand area with low gravity Fuente: CAWST, Canadá
- 21. Biosand filter large sediment and pathogens are trapped in the sand Fuente: CAWST, Canadá
- 22. Biosand filter microorganisms die from lack of nutrients and oxygen Fuente: CAWST, Canadá
- 23. Biosand filter filtered water exits the tube and falls to the collector container keeping the lid Fuente: CAWST, Canadá
- 24. Commercial filter Fuente: CAWST, Canadá
- 25. Commercial filter Fuente: CAWST, Canadá
- 26. Comparison Commercial filter Biosand filter US$ 1.000,00 x x x US$ 60, 00 √ √ need energy x No energy √ efectivity 99% √ √ √ efectivity 98% √ √ √ 800 lts/h √ √ √ 60 lts/d √ Fuente: CAWST, Canadá
- 27. Biosand filter Photos: CAWST / Aqua Clara International
- 28. Conclusions
- 29. gastrointestinal diseases caused by unsafe water consumption can be avoided almost entirely It is possible to improve the quality of water consumed by households in isolated, rural and remote communities water disinfection requires relatively little investment in the demand and costs for the maintenance system The craft biosand filter is as effective as the best commercial filters
- 30. Please, spreading this information. Thank you!
- 31. For more information write to: fundamorvenezuela@gmail.com oscarmanuelromero@yahoo.es Follow us: @Fundamorvzla Fundación Amor Venezuela Visit: www.fundamorvenezuela.blogspot.com www.cawst.org www.eawag.ch www.aquaclara.org/es/ www.fundeih.org
- 32. Diseño y realización: Oscar Manuel Romero Traducción: Katherin Hernández Producción General: Fundación AMOR Venezuela San Vicente y las Granadinas noviembre de 2012