Monthly Archives: August 2012

Slow sand water filter sand source

Posted on August 24, 2012 by Orpheus

A SUMMARY OF THIS POST: For a slow sand filter to work we need to use “uniformly graded” sand. “Uniformly Graded” sand means sand that has already been processed (sifted) so that the grains of sand it contains are mostly … Continue reading →

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water filter sand

Posted on August 14, 2012 by Orpheus

This is an update on the post about sifting sand for a slow sand water filter. I wrote about this in response to a question from a reader.  I recommended using stainless steel wire cloth to sift “play sand” so … Continue reading →

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How does a slow sand water filter work?

Posted on August 4, 2012 by Orpheus

A slow sand water filter (sometimes called a biological sand water filter) works like this: Because of the pull of gravity, water flows down through a sand bed in a container about 3 feet deep from the top to the … Continue reading →

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Slow sand water filter DIY video

Posted on August 3, 2012 by Orpheus

The new video for filter 4 is up on YouTube as of today Aug. 3, 2012. Below is a parts list: (this may have some errors and omissions – occasionally, I do this documentation in a hurry in my spare time … Continue reading →

Posted in slow sand water filter study and construction | 2 Comments