on March 26th, 2015 1 Comment
But what’s to be done? Flush toilets guzzle gallons of water and depend on an entire sewage system — an unfeasible option in many developing nations. To fill the gap, a pair of Stanford civil and environmental engineering graduate students have developed a program called re.source, which provides dry household toilets, and empties them for about $5 a month.
From a recent Stanford News story:
Unlike most sanitation solutions that only address one part of a dysfunctional supply chain, container-based sanitation models, such as the re.source service, tackle the whole sanitation chain. The re.source toilets separate solid and liquid waste into sealable containers, and dispense a cover material made of crushed peanut shells and sugarcane fibers that eliminates odors and insect infestations. The solid waste is regularly removed by a service, which takes it to a disposal or processing site to be converted to compost and sold to agricultural businesses.The re.source students — Kory Russel and Sebastien Tilmans — work under the guidance of Jenna Davis, PhD, an associate professor of civil and environmental engineering. They started small, with a free pilot phase in 130 households in a Haitian slum, but the service has expanded to include 300 additional households with plans to introduce a service in the capital, Port-au-Prince.
The project is part of a larger Stanford focus on water issues ranging from safe drinking water to environmental concerns.