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Biosand water filter
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In accordance with industry accepted best practices we ask that users limit their copy / paste of copyrighted material to the relevant portions of the article you wish to discuss and no more than 50% of the source material, provide a link back to the original article and provide your original comments / criticism in your post with the article.
[quote:Anonymous Coward 61235710:MV8yNjEzMDAwXzQ1NjkwMTYzX0ZDNkQ3QzhG] It seems people are franticly paranoid about ebola but fail to prepare... [b][color=red]I D I O T S[/color][/b] Thanx for posting, OP. I have mine and it works great. [/quote]
Original Message
Biosand water filters can be constructed using simple materials and are capable of filtering out up to 99% of sediment, bacteria and
viruses
. The filter is essentially a column of sand with gravel at the bottom. Contaminated water is poured in the top and filters first through a biological filter, then through the sand and is pushed by gravity up through a tube to a spigot. The biofilter is a layer of naturally occurring micro-organisms very much like those found is salt-water fish tanks. These take a while to grow so filters should be constructed as part of a prep effort rather than on the fly. The system can filter several liters per hour and should be enough to supply a family. While they are very heavy once filled with sand the filter is small enough that it could be placed in a kitchen or laundry room.
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link to www.cawst.org
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