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moved link, categories and list around
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[[Category:Water_treatment]] [[Category:Filters]]
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[http://www.raintree-foundation.org/AT/Appropirate_Technologies/Bio_Sand_Filter.html Biosand Filter]
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    * Clean Drinking Water
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    * Easy to Use
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    * Self contained Maintenance
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    * For Everybody
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    * No Following Costs
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    * Reliable
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==The Filtration Process==
 
==The Filtration Process==
 
===The Start of the Run===
 
===The Start of the Run===
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Microorganisms in the sand zone die off due to the lack of nutrients and oxygen.
 
Microorganisms in the sand zone die off due to the lack of nutrients and oxygen.
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==Maintenance====
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==Maintenance==
    
There is some key maintenance that is required after a filter has been installed and used regularly.
 
There is some key maintenance that is required after a filter has been installed and used regularly.
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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).
 
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).
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==Links==
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* [http://www.raintree-foundation.org/AT/Appropirate_Technologies/Bio_Sand_Filter.html Biosand Filter]
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** Clean Drinking Water
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** Easy to Use
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** Self contained Maintenance
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** For Everybody
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** No Following Costs
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** Reliable
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[[Category:Water_treatment]]
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[[Category:Filters]]
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