Solar water disinfection is a common water purification method in the developing world, but it can be difficult to determine when the water is safe to drink. This is where the wadi comes in. When the simple (and cheap) bottle top is placed on a PET plastic bottle that's been left in the sun for a few hours, it will let the drinker know when its contents have been well and truly disinfected.
Although solar water disinfection has been endorsed by the UNICEF, the World Health Organization (WHO) and the International Red Cross, depending on the sun's position and other environmental factors, the process could take 30 minutes or 2 days. The Wadi measures the sun's rays and shows a smiley face when it is clean drinking water, avoiding further confusion or health problems.
Clean Water Indicators
The Wadi Displays When Total Solar Water Disinfection Has Taken Place
Trend Themes
1. Solar Water Disinfection - Innovative solar-powered water disinfection methods are disrupting traditional water sanitation systems in developing countries.
2. Water Quality Monitoring - Advanced water quality monitoring tools and technologies are revolutionizing the way countries test and evaluate water safety standards.
3. Eco-friendly Water Purification - Sustainable water purification solutions that utilize natural resources for effective water treatment are disrupting the traditional chemical-based purification methods.
Industry Implications
1. Water Treatment - The water treatment industry is poised for disruption through innovative and affordable solar-based water purification solutions for developing countries.
2. Environmental Monitoring - Innovative water quality monitoring technologies are transforming the environmental monitoring industry for ensuring safe drinking water across the world.
3. Renewable Energy - The renewable energy industry is witnessing new growth opportunities through the development of sustainable water purification solutions that run on solar power.