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Super Sand Technology: A Solution for Developing Countries??

Postby Merlin » 24 Jun 2011 20:55

Interesting headlining article on the BBC Website today about a novel water treatment technology involving grains of fine sand coated in graphite to increase throughput. Dubbed "super sand", it could become a low-cost way to purify water in the developing world.
Dr Wei Gao from Rice university in Texas, US, told BBC News that regular coarse sand was a lot less effective than fine sand when water was contaminated with pathogens, organic contaminants and heavy metal ions. While fine sand is slightly better, water drains through it very slowly. "Our product combines coarse sand with functional carbon material that could offer higher retention for those pollutants, and at the same time gives good throughput," explained Dr Gao.

SuperSand.jpg



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24 Jun 2011 20:55

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Re: Super Sand Technology: A Solution for Developing Countries??

Postby FreddyJ » 26 Jan 2012 23:42

I wonder how long the super sand or magic sand lasts? From the video it looked like the water was somewhat pressurized in order to run up the sand filter. This could be a small obstacle for many unless it can be as effective as a gravity filtration system.

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Freddy James - modifying refrigerator water filters to work in the field
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