A thesis reveals alarming disparities in wastewater pollution between Cotonou and Greater Nancy

The thesis by Nelly Chrystelle Houéfa Atinkpahoun, defended at the Université de Lorraine, reveals that Cotonou's wastewater is more polluted than that of Greater Nancy, despite a lower number of connected residents. This research highlights the urgent need to invest in sanitation infrastructure suited to Benin.

Wastewater management is a critical issue for public health and the environment in Benin and France. The research by Nelly Chrystelle Houéfa Atinkpahoun highlights significant differences in urban wastewater pollution between Cotonou and Greater Nancy, raising questions about the effectiveness of existing sanitation systems.

By analyzing sampling data collected over several months, the research shows that Cotonou's wastewater exhibits higher pollution levels than that of Greater Nancy. In addition, a virtual wastewater generation model was developed to simulate variations in flow and pollution, essential for optimizing the performance of treatment plants.

The findings of this research underscore the need to invest in sanitation infrastructure suited to Benin, given a growing population and rapid urbanization. Investors must work with local authorities to mitigate regulatory risks and maximize the chances of success for sanitation projects.

« "Cotonou's wastewater is more polluted than that of Greater Nancy, despite a far lower number of residents connected to Cotonou's treatment plant." »

« "This research offers valuable insights for decision-makers, underscoring the importance of investing in sustainable sanitation solutions in Benin." »