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Clean Energy, Clean Water

7/28/2008 1:51:44 PM

Tags: solar, water, low-tech

Extreme weather, including hurricanes and flooding, not only wreak havoc on landscapes and homes, but also on the water supply. Recent flooding in the Midwest and residual flooding effects of Hurricane Katrina left flood waters laden with sewage contamination.

The most obvious form of water disinfection is boiling, but solar water disinfection is a way to use renewable energy to clean drinking water without using energy from the stove. All you need is a clear glass or plastic bottle and a sunny day. The sunlight cleans the water with radiation via UVA rays and by increasing the water’s temperature.

To disinfect water, fill the clean bottle with contaminated water and close the lid. Place the bottles out in the sun for six hours, from morning until evening. Some recommend using corrugated iron sheets to keep the bottles from rolling, but placing them on your roof also works well. This Web site has illustrated instructions.

 



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Matt Foster
7/28/2008 2:54:34 PM
This is really great information. I've never had a reason to disinfect water, but I love knowing that I can help people who need to do it. Nice work. When I first started reading, I thought this was going to be about what I recently heard about how the dead-zone in the gulf of Mexico was going to be the largest it's ever been because of the flooding. If you don't know about the dead zone you should consider looking it up because it will give a clear message of just how dangerous contaminated water can be. thanks for the great post.







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