Tools for nutrient recycling from wastewater

Last changed: 22 September 2022
Concep tual picture over the steps required to go from awareness and incentives for recycling of source-separated wastewater fractions to agriculture to the final implemented solution becoming integrated into normal operation.

This project, which is based on the iterative interaction between academia and practitioners, aim to promote and facilitate the planning, realization and implementation of decentralized nutrient recycling from source separated wastewater fractions, using ammonia sanitization of black water as a case of an already practiced concept.

The focus of the project is to, based on the interaction with stakeholders (municipalities, water utilities, entrepreneurs, practitioners etc.) understand drivers and obstacles for realisation of use from source separated wastewater and identify documented knowledge as well implementers know-how. This information will serve as the basis for development of tools that support the route from the ignited interest for reuse to the actual implementation and integration of reuse scheme into the normal operation. Ammonia sanitization of black water, which is a technology applied by a majority of municipalities practicing reuse today, will serve as a case to understand from a technology perspective what tools that can facilitate the implementation, monitoring and optimization.

 Short-term outcome of the project is tools to aid the path from interest to realization of reuse solutions in general as well as optimization of the ammonia treatment technology. The frameworks developed for knowledge transfer may in long term promote and support adaption of systems circulating plants nutrients from wastewater to sustainable food production instead of being contaminants of the water environment


  • The project started in 2022 and continues through 2024.
  • Participating from  SLU is Annika Nordin (project leader). External partners are Ebba af Petersens, Water Revival Systems (WRS), Uppsala and Elisabeth Kvarnström, Ecoloop, Stockholm. Haninge Knivsta
  • The project is funded by Stiftelsen JTI.