an “off-grid” toilet that disinfects waste and converts it to energy, reducing disease and making toilets like this a thing of the past for billions in the developing world.
About 2.5-billion people around the world have no access to a private, sanitary toilet, which helps explain why an estimated half a million children die each year due to diarrhea caused by poor sanitation. That’s why the University of Toronto’s Yu-Ling Cheng and the Bill and Melinda Gates Foundation teamed up to design a toilet that can disinfect human waste without connections to water, sewer or grid power. The system, which is expected to cost less than five cents per person per day, separates solid and liquid waste. Solids are burned via a smoldering process, leaving behind sterile ash. The liquid is pasteurized using heat generated from solid waste smoldering.
The result is a toilet that is sustainable, easy to use and reduces disease for billions in the developing world.