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A comment on Coronavirus: the second-weirdest solution?. Parent comment

Re:Coronavirus: the second-weirdest solution? by dillonmckay on Saturday March 07, 2020 @09:23PM (#22515890)
Is the reason sand filtration effective, because the virus is too big to fit between the sand particles as the water flows around it?

I have no clue on how it works, so any insight is appreciated.

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Re:Coronavirus: the second-weirdest solution? by wavepruner on Sunday March 08, 2020 @12:21PM (#22518846)
The virus particles would be filtered out at the top layer of the sand filter, where a layer of microbes grow. This layer is referred to as the schmutzdecke. https://en.wikipedia.org/wiki/Schmutzdecke

Most of the filtering action happens in that layer. Viruses have no problem getting past sand particles.

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Re:Coronavirus: the second-weirdest solution? by dillonmckay on Sunday March 08, 2020 @03:14PM (#22519906)
Thank you for that info.

I also found this report, which may be of interest, from the University of Arizona in 2008 for Coronavirus survival in water and wastewater:

https://west.arizona.edu/sites/default/files/data/Gundy2008_...

10 days or more in water, and 2 to 4 days in wastewater.

My local municipality only uses chlorine, so I am a bit concerned.

We had our own sand filtration system, but ‘decided’ to instead use the town next-door’s system, instead.

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