The IDSA conference in May 2019 gathered many French companies (SUEZ, VEOLIA, AUREA, etc.) or institutions (INRAe, CNRS, Chambers of agriculture, etc.) involved in the recycling of effluents through the production of bio-sourced products intended for crop fertilization. The objective of this conference was to take stock of the regulatory and technological situation of the recycling sectors oriented towards agronomic recovery. Interventions were made both on the evolution of national and European regulations as well as on the opportunities presented by some bio-sourced products such as struvite or biochars. It was the ideal context to present the NUTRIMAN project and its challenges using a poster and a short slideshow offered during the conference.