Adiyan - Waterworks Phase II
Start of works
July 2013
Progress status
49%
Data updated to april 2021
SDG Obiettivi di sviluppo sostenibile
Clean water and sanitation
The project, located in Adiyan near Lagos, involves the construction of an intake station situated on the right bank of the Ogun River, complete with a vertical pumping system which conveys the untreated water in a spheroidal cast iron pipe 1,600 mm in diameter and approximately 8 km long.
The pipe carries the water to the purification plant comprising two parallel treatment lines and the sludge line. The purification treatment includes the flocculation, flotation, aeration, filtration with sand and activated carbon and disinfection with UV rays. The plant twill have a purification Capacity of 320,000 m3/d.
When the water has been purified and rendered fit for drinking it is sent by a pumping station in two 80 m diameter circular tanks, 12 m tall, and introduced into the aqueduct.
The Adiyan water treatment plant, an entirely gravity plant with reduced power consumption, is the only one of its kind in Africa.
Technical data
Excavations (m3)
350,000
Concrete (m3)
100,000
Sand for Filters (tons)
5,375
