Water filters: Difference between revisions

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{{Category=Water}}
{{Category=Water}}
==Introduction==


==Types==
==Types==


* Instructions for making a water filter from gravel, sand, grass and a plastic bottle: [[appropedia: UV_Water_Purification]]
* Instructions for making a water filter from gravel, sand, grass and a plastic bottle: [[appropedia: UV_Water_Purification]]
* UV LEDs can be used to kill pathogens and are cheap.
* UV LEDs can be used to kill pathogens and are cheap. The 'Pure Bottle' uses a hand-powered UV bulb: ][http://wythtech.posterous.com/purify-the-dirtiest-of-water-using-pure-bottl][http://inhabitat.com/pure-water-bottle-filters-99-9-of-bacteria-with-uv-light/purebot/][http://www.jamesdysonaward.org/Projects/Project.aspx?ID=1096&RegionId=19&Winindex=3]. Steripen is similar: [http://www.google.com/products/catalog?cid=15965904709718733332]. An open-source version of these would be nice.  
* [http://en.wikipedia.org/wiki/Slow_sand_filter Slow sand filter] with layers of fine sand at the top, coarse sand in the middle and gravel at the bottom.
* [http://en.wikipedia.org/wiki/Slow_sand_filter Slow sand filter] with layers of fine sand at the top, coarse sand in the middle and gravel at the bottom.
* According to research by Micha Hummler: Original Plans from Josh Kearns and Aqueous Solutions: *http://www.aqsolutions.org/
* According to research by Micha Hummler: Original Plans from Josh Kearns and Aqueous Solutions: *http://www.aqsolutions.org/

Revision as of 03:01, 28 February 2011

Main > Water


Types

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