3 ms·
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. ht
by wavepruner 7y ago
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 https://en.wikipedia.org/wiki/Schmutzdecke
Most of the filtering action happens in that layer. Viruses have no problem getting past sand particles.
- dillonmckay 7y agoThank 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_Article_SurvivalOfCoronavirusesInWater.pdf 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.