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Bio sand filter - Using a 2 litre PET bottle (before SODIS)

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Uploaded on Dec 22, 2009

Here is a cheap way to make a good bio sand filter, capable of removing all turbidity and also bacteria to some extent.
At www.biome-solutions.com there is a platform for students to intern and learn what simple water treatment systems are and what good quality water means to the community.
In combination with SODIS (www.sodis.ch) ,this bio sand filter can be a good treatment for water in flooded areas..

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