Incatema hands over the Cambérène outfall work to the National Sanitation Office of Senegal

21 February, 2024

The work on the Cambérène submarine outfall, located north of Dakar (Senegal), has been handed over by Incatema to the project's promoter, the National Sanitation Office of Senegal (ONAS).

In addition to the Incatema representatives, the handover ceremony was attended by Mr Ahmadan Khadim Bamba Fall, as administrative and financial director of ONAS, Mr Pédre Sy, as project manager of ONAS, and Mr Mamadou Niang, as head of the economic and administrative department of ONAS. All of them have highlighted the quality of the water management infrastructure and have emphasised Incatema's collaboration and excellent disposition throughout the execution of the project.

The Cambérène submarine outfall connects with the town's wastewater treatment plant (WWTP); also built by Incatema, to carry the previously treated and purified effluents to the seabed through a 1,200-metre-long, 2.20-metre-diameter microtunnel under the sea.

The wastewater treatment process begins at the WWTP, from where the treated water leaves the plant and is conveyed through the outfall to the high water level. This is where the final purification is completed by natural chemical, physical and biological processes. These processes are made possible by water temperature, pressure, currents, ultraviolet radiation and salinity conditions, which contribute to the ultimate cleaning and dilution of the treated water without impacting the environment.

The submarine outfall is part of the Government of Senegal's Environmental Program to reduce pollution in the north of Dakar, one of the cities with the highest pollution levels in the African country. "The outfall will make it possible to eliminate polluting waste that not only will have an impact on the health of the population, but also on fishery resources and other sectors, thus contributing to SDG 6 of the United Nations 2030 Agenda aimed at clean water and sanitation, and SDG 14, on the protection of underwater life," says Mr Fernando Diaz, director of Infrastructure at Incatema.