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Sustainable URban FERtilizer – SURFER (2021-2024)

Published: 10 December 2021

Within the SURFER project we are contributing with new knowledge for development of safe treatment and recycling of nutrients from blackwater, for production of a sustainable urban fertilizer.

Safe and efficient circularity in a city’s urban metabolism needs to consider all waste streams as valuable materials, including nutrients. Urban wastewater contains 84% of nitrogen (N) and 77% of phosphorus (P) going through a city. Separation of blackwater from greywater allows for increased potential for nutrient recycling, pollution control, biogas production and reduced carbon footprint; it is extremely promising for increased nutrient circularity and increased sustainability in the urban wastewater and agricultural sectors. Blackwater contains most nutrients and is of special interest for separate collection for nutrient circularity.

The research project SURFER will contribute with new knowledge necessary for development of a blackwater treatment/recovery train for safe and efficient nutrient recovery for production of an integral Sustainable URban FERtilizer. The research objectives are to (i) retain nutrients in blackwater effluent from an Upflow Anaerobic Sludge Blanket (UASB) reactor by nitrogen stabilization, (ii) remove pharmaceutical residues from blackwater UASB effluent, (iii) identify other important prerequisites for the production of a Sustainable URban FERtilizer, related to upcoming EU regulation. Bench-scale experiments for partial nitrification, pharmaceutical removal, heavy metal content, biofilm and bacteria analyses will be conducted on blackwater UASB effluent.

 

Elisabeth Kvarnström

Elisabeth Kvarnström, Adjunct Professor

Organisation: Urban Water Engineering, Architecture and Water, Department of Civil, Environmental and Natural Resources Engineering
Stephanie Rusch Fehrmann

Stephanie Rusch Fehrmann, PhD Student

Phone: +46 (0)920 491749
Organisation: Urban Water Engineering, Architecture and Water, Department of Civil, Environmental and Natural Resources Engineering
Inga Herrmann

Inga Herrmann, Associate Professor

Phone: +46 (0)920 492528
Organisation: Urban Water Engineering, Architecture and Water, Department of Civil, Environmental and Natural Resources Engineering
Annelie Hedström

Annelie Hedström, Professor

Phone: +46 (0)920 492309
Organisation: Urban Water Engineering, Architecture and Water, Department of Civil, Environmental and Natural Resources Engineering