Solvatten

Solvatten is a simple portable device which uses sunlight to purify water for drinking. It was invented by Petra Wadström, and was intended mainly for domestic use in the developing world. Provided the sun is strong enough, it takes two to six hours to produce ten litres of drinking water.[1] It works through a combination of the natural ultra-violet radiation and heat (infra-red radiation) in sunlight, and also incorporates a filter mesh.[2]

Solvatten
A Solvatten unit
Founded2006, 2013
TypeAktiebolag, Foundation
Location
Area served
Worldwide
Key people
Petra Wadström
Websitesolvatten.org

The device is marketed by a company, Solvatten AB, founded in 2006.[1]

The device

The Solvatten device consists of two hinged parts which can open in the manner of a book, revealing two transparent plastic surfaces. Each half can hold five litres of water. When the device is placed in the sun, the plastic allows ultra-violet radiation to reach the water, which is also heated by the sunlight. It becomes safe to drink within two to six hours.[2] Use of the device can reduce the use of wood to boil water, thus acting to limit deforestation and carbon dioxide emissions.[2]

Reception

The device has received several awards:

  • 2009: World Wildlife Fund, "Climate Solver"[2]
  • 2011: International Green Awards, "Best Green New Product Innovation"[3]
  • 2011: Swedish-American Chamber of Commerce, SACC New York-Deloitte Green Award[4]
  • 2013: The Energy Globe Award Mali[5]
  • 2013: Sveriges Ingenjörer, The Polhem Prize[6]

References
  1. Solvatten. Climate Solver; World Wildlife Fund. Archived 26 January 2013.
  2. WWF Climate Solver 2009
  3. International Green Awards 2011
  4. 2011 SACC New York-Deloitte Green Award Winner Solvatten Praised by President Obama. Swedish-American Chamber of Commerce.
  5. The Energy Globe Awards 2013
  6. Polhempriset 2013
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