The University of Toronto has announced a $2.2 million grant from the Bill & Melinda Gates Foundation in support of ongoing efforts to design a waterless hygienic toilet that is safe and affordable for people in the developing world.
Engineering professor Yu-Ling Cheng, director of the Centre for Global Engineering in the Faculty of Applied Science & Engineering, and her team, which includes researchers from Western University and the University of Queensland, placed third in the Gates Foundation’s Reinvent the Toilet Challenge last August. Working with partners in Bangladesh, Cheng’s team hopes to build an operational prototype by December 2013 that uses readily available materials and equipment that can be maintained locally.
The team’s solution uses a sand filter and UV disinfection to process liquid waste and a smolder chamber — similar to a charcoal barbeque — to incinerate solid waste that has been flattened and dried in a roller/belt assembly. The team will work to further simplify the process, reduce mechanical complexity of the device, and minimize odor.
"I am very proud of our entire team and the work we have done up to now," said Cheng. "We have proven that our concept works technically; now we are going to get busy to make sure it will work for the users — some of the 2.6 billion people in the world who do not have access to basic sanitation."
Source: “U of T Engineers Awarded $2.2 Million Grant for Toilet Research.” University of Toronto Press Release 11/28/12.
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