Sustainable energy generation through waste water: A situation in the urban city of Lagos, Nigeria

01/25/2017 - 11:00-01/25/2017 - 12:15


Timothy Oluwagbenga Ajayi
(Ogun State Institute of Technology, Igbesa, Nigeria)
Oluwatosin Ajoke Ayeni
(Ogun State Institute of Technology, Igbesa, Nigeria)


Timothy Ajayi

With an estimated population of over seventeen million people, Lagos is one of the world’s fastest growing cities in the world. One of the prominent natural endowments that has borne the brunt of this rapid expansion is the Lagos Lagoon, a water body that has been used for sewage disposal for more than half a century. The large volume of sewage deposited in the lagoon on a daily basis has escalated due to the rapid growth in the city’s population. Besides adding beauty to the city, the Lagos Lagoon is a veritable source of seafood for Lagosians. As is the case with other sewage-rich, densely-populated cities, the city of Lagos has not fully utilized its bounteous sewage resources to upscale its energy supply needs. The thrust of this paper is to explicate the repercussions of wanton sewage disposal into the Lagos Lagoon and to highlight the potential which Lagos has to generate massive energy from sewage waste in order to meet its energy challenges. Extant studies have pointed to the fact that sewage waste is a key energy source, with 1 kilogramme of dry faecal sludge having a calorific value of 17.3 millijoule. This paper strongly recommends the dynamic use of faecal sludge to save the Lagos Lagoon from sewage pollution and upscale energy supply in Lagos.