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Bokkapitel2020Vetenskapligt granskad

Resource recovery from wastewater: A new approach with alkaline dehydration of urine at source

Simha, P.; Senecal, J.; Gustavsson, D.J.I.; Vinnerås, B.

Sammanfattning

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 this chapter, we focus on the most nutrient-rich 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.

Nyckelord

Digitization; Eco-innovation; Ecological sanitation; Fertilizer; Hygiene; Nutrient recycling; Source separation; Urea stabilization; Urine; Wastewater treatment

Publicerad i

Titel: Current Developments in Biotechnology and Bioengineering : Sustainable Bioresources for the Emerging Bioeconomy
ISBN: 9780444643094Utgivare: Elsevier