Disinfecting water with the sun is an old idea. But students at the University of Washington have come up with a clever way to check if the water is sanitized and ready to drink. The procedure is very simple and is a solution for drinking water in poor areas, and won them a prize of $ 40,000 dollars.
Solar water disinfection has piqued the interest of many designers in the hope of coming up with practical and interesting solutions for low-cost clean water. Using the sun's rays to disinfect water is a primary way to minimize waterborne infections. But one problem with many systems is that the user doesn't know when the water is finally safe to drink. That's where the students at the University of Washington made a difference.
Reports from the University of Washington say that using parts of a key that flashes in response to light, they created a device that is similar to what you were going to find in a solar energy calculator. The device monitors the amount of light passing through a bottle filled with water and how many particles are obstructing the light. When a sufficient number of particles are removed, the sensor indicates that the water is fit for consumption.
The solution could be retailed for as little as $3.40, according to the students' estimate, making it a viable solution for many nonprofit associations that provide this type of support to communities.
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Authors: Val
