Version 1
: Received: 21 March 2023 / Approved: 23 March 2023 / Online: 23 March 2023 (02:08:41 CET)
How to cite:
FATY, A.; DIOP, C.; FAYE, W. Rainwater and Wastewater Management: A Case Study of Dakar’s Built-up area, Senegal. Preprints2023, 2023030405. https://doi.org/10.20944/preprints202303.0405.v1
FATY, A.; DIOP, C.; FAYE, W. Rainwater and Wastewater Management: A Case Study of Dakar’s Built-up area, Senegal. Preprints 2023, 2023030405. https://doi.org/10.20944/preprints202303.0405.v1
FATY, A.; DIOP, C.; FAYE, W. Rainwater and Wastewater Management: A Case Study of Dakar’s Built-up area, Senegal. Preprints2023, 2023030405. https://doi.org/10.20944/preprints202303.0405.v1
APA Style
FATY, A., DIOP, C., & FAYE, W. (2023). Rainwater and Wastewater Management: A Case Study of Dakar’s Built-up area, Senegal. Preprints. https://doi.org/10.20944/preprints202303.0405.v1
Chicago/Turabian Style
FATY, A., Cheikh DIOP and Waly FAYE. 2023 "Rainwater and Wastewater Management: A Case Study of Dakar’s Built-up area, Senegal" Preprints. https://doi.org/10.20944/preprints202303.0405.v1
Abstract
Urban water management rules have long been oriented towards the rapid disposal of rainwater and wastewater through combined or separate drainage networks. This type of urban water management has shown its limits in both developed and undeveloped countries, notably because of its inexorable degradation over time and the cost of its rehabilitation and adaptation to the increase in demand due to urban growth. Sanitation data from the Office Nationale de l’Assainissement du Sénégal. Rainfall data are processed and analyzed to describe the current situation and how variable and high rainfall affects the neighborhood. Approximately 70-92% of the Dakar region's inhabitants have on-site sanitation facilities and sufficient income makes it difficult to manage their wastewater without exposing the environment or the health of citizens. The volumes of domestic wastewater flowed into the environment, in addition to poorly evacuated rainwater, show that the current sanitation system in the Dakar region is largely outdated, and insufficient for an effective drainage of rainwater and wastewater. Increasingly, frequent flash floods of polluted storm water from large amounts of domestic sewage are occurring, resulting in damage to human health. Exceptionally high rainfall is in correlation with high daily rainfall, therefore in recent years daily rainfall higher than 100 mm have been recorded in connection with above-average annual rainfall. That increase in rainfall disrupts the drainage of wastewater in the region of Dakar. A pragmatic and voluntary policy based on the principles of ecohydrology to recreate natural areas will be the only way for Dakar to efficiently manage storm water and wastewater. It can bring Dakar in 2030 into the international group of sustainable green cities.
Environmental and Earth Sciences, Water Science and Technology
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
