Exhibition: Solvatten
The innovator Petra Wadström, the recipient of the KTH Grand Prize 2022, is setting up an exhibition about her innovation Solvatten in the KTH Library.
What is Solvatten?
Solvatten is a combined water purifier and water heater that reduces the daily use of wood and coal while simplifying the process of purifying and heating water in the home.
How the Solvatten technology works
1. The two-part black container is filled with water.
2. The Solvatten purifier uses solar heating and UV radiation to purify the water effectively: the sun’s ultraviolet UVB rays are released through UV-transparent surfaces, and the water is heated against the black inside of the container. The resulting synergies render pathogenic microorganisms harmless.
3. The Solvatten container also has a filter that removes water organisms, making the water less turbid.
4. Once the process is finished and the water is clean, according to WHO guidelines for clean water, an indicator shows a green smiley face.
5. It takes two to five hours to clean 10 litres of water of harmful microorganisms, which can otherwise cause dysentery, typhoid fever and cholera.