Solar Ultraviolet Disinfection System for Safe Drinking Water

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A major health concern in developing countries around the world is water quality. Water can be contaminated with disease-causing pathogens or with harmful chemicals. Technologies used in developed countries are often not practical for developing nations due to cost and energy requirements. Solar UV radiation inactivates pathogens in a water supply by causing damage to nucleic acids and proteins so that the cell cannot replicate and cause an infection. The empirical design of current technologies still leaves uncertainty about the quality of the disinfected water. Also, existing disinfection systems that use a constant-flow design require electrical energy to generate artificial UV radiation, which is not practical for developing nations.

Researchers at Purdue University have developed a solar UV radiation-based system to disinfect water continuously. Water is pumped through a UV-transparent tube that is positioned in a solar concentrator. Controlled flow of water through the irradiated area allows for reliable and predictable performance.

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-More reliable and predictable decontamination
-No power required
-Inexpensive and facile

Potential Applications:
-Clean water
Feb 28, 2014
United States
Jan 17, 2017

Aug 29, 2012

Aug 29, 2012
European Patent

Aug 29, 2011
United States
Purdue Office of Technology Commercialization
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