Solar cells help purify water in developing countries

Researchers at Lund University in Sweden have developed a water purification plant that provides clean water far beyond the reach of the electrical grid – thanks to solar cells. With the help of Nobel Peace Prize recipient Muhammad Yunus (Noble Peace Prize in 2006), these small and portable solar cell stations are now being placed across rural Bangladesh. The environmental company Watersprint, founded in 2013 by Kenneth M Persson and engineer Ola Hansson, has patented the technology that helps purify water by combining UV-LED technology with intelligent software and Wi-Fi. Its system of 12 volts is so effective that it can be run by a single solar panel. The solar cells also charge its battery, which means that the portable facility can be used around the clock and in rural areas without access to electricity.
Muhammad Yunus and his organization Yunus Centre have ordered portable units as part of a pilot project. In October, the first unit was installed and by now, another 9 units have been delivered to the project in Bangladesh. Watersprint recently signed a contract with the United Nations about placing 500 portable units in Bangladesh. The units can be connected to Wi-Fi and they include software that monitors the machine. In case of malfunction, the unit will send out alerts via text message to any mobile phone that is connected to it, as well as through the LED lights on the machine. The portable purification units, so-called Micro Production Centres (MPC), are managed by local suppliers and help create jobs for young, unemployed people who run the small facilities and sell clean water in exchange for a small fee. A large part of the population in Bangladesh currently use water contaminated by arsenic.
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