Resource recovery

In many regions worldwide, the resources in urine and faeces are not recovered. Fertilizers are synthetically produced in high energy-consuming plants and then transported around the world, which also requires much energy consumption. The nutrients from fertilizers enter the food chain and are  excreted by humans. Too much nutrient emissions into the environment can lead to environmental and health hazards. Learn more about the problem... 
The Blue Diversion Toilet is a sustainable solution: it recovers resources from urine and recycles them to be used as fertilizer. 

There are two resource recovery options of the Blue Diversion Toilet:

On-site resource recovery

Technology under development
Urine and faeces are treated on-site with on-site fertilizer production:
  • Urine-based fertilizer by dosage of hydrated lime &
    evaporation 
  • Dry faeces combustion

Learn more about on-site resource recovery...

Off-site resource recovery

Close to industrialization

Urine and faeces are collected and transported to a community-scale off-site treatment plant where fertilizer is produced:

*in cooperation with the Eawag project VUNA. Watch a video showing urine-based fertilizer production in operation at Eawag. 
The technology for resource recovery from urine consists of two processes: stabilisation and volume reduction. Learn about the reasons for these processes ...