Qatar's public works authority (Ashghal) said it has started excavation works for the main trunk sewer, a key part of Doha South Sewage Infrastructure Project.

The project has been designed to serve areas in the south of Doha and the expected population growth over a hundred years to come.

A joint venture between Bouygues Travaux Publics and UCC is the project contractor, while CH2M is the project management consultant.

Work is progressing well on the Doha South Sewage Infrastructure Project which will be completed by the first quarter of 2019, said a statement from Ashghal.

The scope of work includes construction of a 16-km-long main trunk sewer, divided into three segments, Eastern, Northern and Western. 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, it stated.

The project also includes the construction of seven lateral interceptor sewers with a length of about 24 km, which will convey flows from areas in the centre of Doha to the main tunnel.

It can be linked to future infrastructure projects, and 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, it stated.

One of the important benefits of the Doha South Sewage Infrastructure Project is the gravity-based main trunk sewer that will link a number of areas in the south of the capital to the sewage network, it added.-TradeArabia News Service