In a bio-based circular economy, domestic wastewater has a significant role to play. By separating wastewater into different fractions at the source, it is possible to create new pathways for recycling resources. In a book chapter published in Current Developments in Biotechnology and Bioengineering, Simha et al. discuss about the most nutrient-rich wastewater fraction, human urine. We present a new, simple, yet potentially revolutionary nutrient recycling technology — alkaline urine dehydration. We then describe how this technology can be combined with urine-diverting toilets and integrated with existing sanitation infrastructure to create a service chain that safely collects, contains, transports, and applies urine as fertilizer. The potential benefits, risks, knowledge gaps, and challenges surrounding the implementation of a urine-diverting and dehydrating sanitation system are discussed. Finally, the prospect of creating smart toilets and digitizing the proposed sanitation system are explored. To read the full chapter, follow the link below:
Simha, P., Senecal, J., Gustavsson, D. J., & Vinnerås, B. (2020). Resource recovery from wastewater: a new approach with alkaline dehydration of urine at source. In Current Developments in Biotechnology and Bioengineering (pp. 205-221). Elsevier.