The Doha South Sewage Infrastructure Project is expected to be completed by the first quarter of 2020 as part of the efforts by the Public Works Authority (Ashghal) to implement sustainable drainage infrastructure throughout the country.
The information about the expected completion of the Project is given on the Ashghal website. The Project comprises the construction of a 16km long main trunk sewer, divided into eastern, northern and western segments.
This is in addition to the design and construction of 11 shafts that will be used to excavate the main tunnel. The main trunk sewer will convey the sewage flows through pumping stations to the existing Doha south treatment works. The project also includes the construction of seven lateral interceptor sewers that will convey flows from areas in the centre of Doha to the main tunnel.
The Project is designed to serve areas in the south of Doha and the expected population growth. It can be linked to future infrastructure projects. When completed, it will enable the decommissioning of more than 20 old pumping stations currently located in the residential and commercial areas in the south of Doha.
One of the important benefits of the project is the gravity-based main trunk sewer that will link a number of areas in the south of Doha to the sewage network. As a result, it will reduce the environmental impacts through the full control of odours in sewage treatment works and conveying system, and reduce other environmental problems arising from sewage overflow due to excess hydraulic pressure on the existing drainage network, where sewage flows exceed its capacity.
The project team has implemented periodic environmental audits as a contractual requirement to test and measure the contractor’s (the Joint Venture of Bouygues and UCC) compliance with the established standards and environmental bests practices.
The project has won the prestigious ‘Good Rating’ by the Civil Engineering Environmental Quality Assessment and Award Scheme (CEEQUAL) and Engineering News Record (ENR)’s Global Best Project Award in the Wastewater Category, in recognition of its design innovation, outstanding health and safety performance, effective risk management and implementation of construction best practices. It’s the first and lone project in the region that achieves the CEEQUAL Design and Build Award.
Ashghal has so far completed Doha North Sewage Treatment Works and Doha and Doha West Sewage Treatment Works. Besides, it has planned a sewage treatment plant project for Al-Wakrah and Al-Wukair catchment areas.
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