UV treatment / Solar disinfection (SODIS)
From Akvopedia
SODIS uses sunlight to inactivate harmful micro organisms in water almost completely. Transparent plastic (PET) or glass bottles filled with contaminated, but clear, water are exposed to the sun for six hours in sunny weather or two days in cloudy weather. If a temperature of 50 degrees Celsius is reached, an exposure time of one hour is sufficient.
This technology was awarded a price by Simavi and organisations such as SANDEC are promoting it in many developing countries.
| Advantages | Disadvantages |
|---|---|
| Very cheap. |
|
Costs
Very low, re-use of plastic bottles.
Applying conditions
Numbers: Used by more than 1,000,000 in Asia, Africa and Latin America.
Games (Dutch)
SODIS Manual
Although SODIS is very easy to do, SODIS has a pamflet with more specific information.
Movie
- Philippines www.youtube.com/watch?v=FnjO-y8-Crw
- Sierra Leone Sodis workshop www.youtube.com/watch?v=nJiV0qKm1T8&feature=related
