United Nations University - Institute for Integrated Management of Material Fluxes and of Resources

Wastewater reuse for enhanced food and non-food value chains

Sunday 28 August | 11.00-12.30 | Room: NL Music Hall / Musiksalen
2) Photo by IWRM AIO SIDS / CC BY-NC 2.0 / Cropped from original

The seminar will explore the opportunities of using wastewater and organic waste within multifunctional land-use systems for the production of food and energy crops in urban transition zones in Sub-Saharan Africa. In this approach the wastewater is treated in a target-oriented manner to be used for irrigation and nutrient supply of the respective land-use, considering hygienic as well as environmental aspects. Treating wastewater in this way is cost-effective and reduces the demand for freshwater and fertilizers, which is particularly important for small-holder farmers. Besides directly contributing to food and energy security, the multi-functional land-use systems will reduce the removal and collection of biomass (for heating and cooking) in the region. This will contribute to sustaining soil fertility and soil-related ecosystem services. Using wastewater in this way will provide opportunities to enhance/develop the value chain of all products (food crops, energy crops, energy from wastewater etc.). Capacity development at multiple levels is required to implement such an approach in a sustainable manner, which would address major issues of the Sustainable Development Goals.  


11:00 Welcome

11:05 Wastewater reuse as opportunity to boost agricultural production
Marlos de Souza, FAO

Q & A

11:15 Wastewater production and availability: trends and knowledge gaps
Martina Flörke, CESR

Q & A

11:25 Incentives for and obstacles towards wastewater treatment and reuse in developing countries
Ines Dombrowsky, DIE

Q & A

11:35 Wastewater reuse for protecting natural water resources
Birguy Lamizana, UNEP

Q & A

11:45 Wastewater reuse in multifunctional land-use systems promotes water, energy and food security
Tamara Avellán, UNU-FLORES

Q & A

11:55 General Discussion

12:25 Summary and wrap up