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Researchers Develop "Tea Bag" Water Filter
cybernanga writes "A group of researchers in South Africa has developed a filter that can purify water straight from the bottle. The filter sits inside a tube fitted on top of a bottle and purifies water as it is poured on a cup. From the article: 'The designer behind the filter, Dr Eugene Cloete, from the Stellenbosch University in South Africa, says the filter is only as big as an ordinary tea bag. He says the product is cost-effective and easy to use. "We are coming in here at the fraction of the cost of anything else that is currently on the market," says Dr Cloete on BBC World Service.'"
The filter in the article is just an ordinary active carbon filter. This is waaay better.
No sig today...
Yes but that solution doesn't remove any contaminants in the water; it only kills microbes.
The bleach will also break apart many kinds of contaminants, it won't remove heavy metals and whatnot, but I think bleach can break poisons.
You can't take the sky from me...
I suppose the only problems would be the fuel (wood and other biofuel consumption would suddenly take a hike), training (operating the still), and maintenance (cleaning the crud out).
Materials, portability, scalability, possibility of being used by small children, safety of use, etc.
They're looking for something they can airdrop on refugees.
You can't take the sky from me...
I read that you can filter out e-coli or whatever common bacteria there was in water with a regular piece of cloth since the bacteria where grouped into bigger groups/particles.
Too lazy to try to find the magazine but maybe someone else know what I was supposed to talk about :D
Anyway, simple techniques can obviously be beneficial to, even if they won't solve all.