Project Jebel Ali, Dubai, United Arab Emirates

Jebel Ali Sewage Treatment Plant

370,000 m³ treated on a daily basis for green Dubai

Activity: Environment
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A signature and key project, the Jebel Ali Sewage Treatment Plant is the largest sewage treatment plant project BESIX ever embarked on. It will assure that all of Dubai’s sewage is treated up to international standards and without environmental nuisance when millions of visitors are expected to touch down in Dubai for EXPO 2020.

Unprecedented magnitude

Combined with the existing Jebel Ali Phase 1 sewage treatment works, the new facilities will treat the equivalent of the sewage flow originating from a city of 3.35 million inhabitants. A project of this magnitude is unprecedented in the GCC region. All sewage water is treated up to Dubai’s strict irrigation water standards and allows the city to cut back the use of costly desalinated seawater for non-potable use by 700,000,000 litres per day through re-use applications such as irrigation.

Means to an end

Over a period of three years, BESIX – in partnership with Larsen and Toubro – will build an impressive amount of 77 tank clusters and buildings structures. Each tank cluster often consists of several units: 20 pre-sedimentation tanks to capture the settable solids, 16 aeration tanks where oxygen breaks down the contaminants, 16 large diameter clarifiers to separate the biological bacteria from the clean water, etc… All these structures are interconnected by an impressive network of large diameter pipes moving 370,000 tons of water from one treatment unit to the other, 24/7, all year long.

The whole process produces bio-solids which Dubai uses as fertilizer and soil improver in their numerous landscaped areas: a feature which differentiates green Dubai from other desert cities. This project puts BESIX in a good position to tackle future large-scale water projects in a sustainable manner.

Rachid Ghamraoui
General Manager Middle East, BESIX Sanotec

Nature-friendly project

One of the more special features is the valorisation of the main by-product from the treatment process, the sludge. This liquid excess product, which is normally disposed of to a landfill in the desert, is anaerobically digested and then dried in state-of-the-art sludge dryers, which use the by-product of the digestion process, methane gas, as fuel to evaporate excess water.

Coordination is key

Apart from the stringent planning and the integration with existing facilities, the key challenge is the day-today coordination between the various trades to assure that interfaces between civil works and the equipment and long piping and electrical cables are correctly and timely planned without the need for costly and time-consuming re-work.

Project details

Project name

Jebel Ali Sewage Treatment Plant

Area(s) of expertise

Municipal Wastewater Treatment Plants

Contract type

Build

Location

Jebel Ali, Dubai, United Arab Emirates

Stakeholder(s)

Six Construct

Client

Dubai Muncipality

Building Period

2016 - 2019

Total value

€ 303 million

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