Doha West wastewater and recycling plant

Doha

Expansion works worth around QR890mn will be carried out at the Doha West wastewater and recycling plant.
The work will be executed by a consortium consisting of Degremont, a subsidiary of Suez Environnement, and Marubeni Corporation, it is understood.
Construction works amounting to nearly QR470mn will be executed by Degremont, according to a statement by the company.
The expansion will help increase the plant’s treatment capacity by an additional 105,000cu m/day to 280,000cu m/day. Over the term of the contract, the plant will be able to manage wastewater from more than 1.04mn of the country’s population.
This project follows two contracts signed in 2005 for the design, construction and 10-year operation of a 135,000cum/day plant, and then in 2011 for its first expansion to 175,000cu m/day to serve an estimated population of 650,000.
Located 20km west of Doha, the plant has been in operation since March 2010. The expansion started in 2011 was completed in late 2012, and Suez Environnement will oversee the plant’s operation until 2020.
“We are proud of Ashghal’s renewed trust for this Doha West plant expansion after having built the two prior ones. This new contract acknowledges our capacity to offer, deliver and then operate efficient facilities tailored to the local challenges of population growth and protection of resources,” said Degremont CEO Rémi Lantier.
To deal with Doha’s increasing population, Ashghal essentially chose the same technologies that have already been put in place and proven effective, according to the statement. It includes expansion of the secondary biologic treatment and also that of the tertiary treatment, which implements ultra-filtration membranes and the ‘Smartrack’ system, allowing re-use of the treated water to irrigate green spaces, market gardens and replenish groundwater.
The contract strengthens the presence of Suez Environnement in the country where it also designed and built wastewater treatment facilities for Barwa City (50,000 inhabitants) and Lusail (250,000 inhabitants).

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