Project at a Glance:
Customer: Ghana Water Company (GWCL)
Project Value: $82M
Status: completed in 2014
Segments: water resources management, water treatment
Main Benefit: supply of drinking water to over 750,000 people
Challenge:
The Ghana Water Company chose TAHAL to carry out a turnkey project for the rehabilitation and expansion of water supply systems and the construction of a water treatment plant (WTP). The project serves a population of over 750,000 people in the Accra-Tema Metropolitan Area (ATMA).
Solution:
In the project’s first stage, TAHAL provided a diverse range of services including preliminary and detailed design, procurement and installation of pipes, fittings and accessories, and procurement of electromechanical equipment and instrumentation. At the second stage, TAHAL constructed a new WTP and reinforced concrete reservoirs, and provided technical assistance in the operation and maintenance of the treatment plant and pumping stations.
Water supply system:
Rehabilitation and expansion of the water supply system included:
- Supply and laying of transmission mains
- Reinforcement of concrete storage reservoirs
- Rehabilitation of existing reservoir
- Construction of distribution network
Water treatment plant:
Based on direct gravity sand filtration technology, the new and rehabilitated WTPs featured:
- Chemical and chlorination facilities
- Pre-chlorination and hydrated lime powder
- Hydrated lime powder and chlorine gas dosing
- Alum dosing (as required)
- Horizontal centrifugal pump
Benefits:
- Water infrastructure development
- Supply of drinking water
- Improved quality of life for over 750,000 residents
