Students Create Dirt Cheap Solar Solution for Disinfecting Water

Disinfecting water with the sun is an old idea. But students at University of Washington have come up with a clever way of checking whether or not the water being disinfected is finally ready to drink. Using simple parts, their cheap set-up is a solution for safe drinking water in poor areas, and it won them a $40,000 purifier

Solar disinfection of water is an old idea, and one that has sparked the interests of many designers hoping to come up with interesting and practical solutions for low cost clean water. Using the sun’s rays to disinfect water is a primary way to minimize water-borne infections. But one problem with many systems is the user doesn’t know when the water is finally safe to drink. That’s where the students at University of Washington step in.

University of Washington reports that using parts from a keychain that blinks in response to light, they created a device that is similar to what you’d find in a solar powered calculator. The device monitors how much light is passing through a water-filled bottle and how many particulates are obstructing the light. When enough particulates are removed, the sensor indicates that the water is now safe to drink.

The solution could be retailed at just $3.40, the students estimate, making it a viable solution for many non-profits that provide this kind of support to communities.

Source: treehugger

Solar water purification would be ideal for many parts of rural Africa.  Hopefully this device can be commercialized to benefit communities that suffer unnecessarily from water-borne diseases.

Water Rhapsody Water Conservation Systems has incorporated Yes Solar Mpumalanga so that we can offer solar water heating systems to further reduce your environmental impact (water and energy are linked).  Yes Solar is a distributor for Solsquare Solar Solutions- high quality German-engineered solar energy systems that are competitively priced.  Solsquare solar geysers are SABS- and Eskom-approved and are fitted by qualified, Eskom-accredited solar installers.   Now is the time to install a solar geyser while the Eskom rebates last (this money will run out eventually) and before the looming energy crisis arrives.  Solar water geysers can reduce household electricity costs by up to 50%.

Water Rhapsody’s WWF AWARD-winning water conservation systems (product demo) include rainwater harvesting systems, grey water recycling systems, swimming pool backwash recycling, water-saving toilet flushing mechanisms and rainwater tanks (we are authorised  JoJo Tanks & Atlas Plastics water tank dealers in Mpumalanga and Limpopo- best water tank prices in the Lowveld!).

Our water and solar systems will save the environment while you save money on water and electricity bills; get free water and free water heating!

Contact us for a free quote on a solar geyser, water system or water tank.

, , , , , , , , , , , , , , , , , , , , , , , , , , , ,