The 200-year-old flush toilet requires a substantial amount of infrastructure, which is expensive to build and run. Innovative toilets could be a source of energy while dramatically improving sanitation.
Their aim is to create a toilet that will process wastewater in family homes and convert it into gas or electricity, saving families money and protecting them from deadly diseases caused by poor sanitation.
The Bangkok-based Asian Institute for Technology (AIT) is receiving a $5 million grant from the Bill & Melinda Gates Foundation for the project, part of an estimated $380 million effort by the foundation to tackle sanitation problems in Asia and Africa.
“The [flush] technology that we’ve been using so far is 200 years old already … It hasn’t really been improved at all [since],” Thammarat Koottatep, an environmental engineer and associate professor at AIT, said at the AIT project’s launch Sept. 24.
The current flush toilet requires a substantial amount of sewage infrastructure, which is expensive to build and run. The technology for re-using and recycling the byproducts of animal waste is already available and used in industry but has not yet been applied to toilets, Thammarat said.