It's World Toilet Day today. What may sound curious is intended to draw attention to a serious problem. Because worldwide, one in three people lack access to appropriate sanitation. In the Blue Diversion Autarky project, researchers are developing an off-grid toilet, with on-site treatment allowing valuable resources to be recovered.
With the Blue Diversion Autarky toilet, faeces, urine and wastewater are separated at source. This means that the three streams can be independently treated according to their particular characteristics: pathogens can be removed more effectively, water can be recycled both for flushing and for handwashing, and nutrients can be recovered.