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The Beginning
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The Construction Phase
Project Facilities
Plant Operation & Maintenance
Major Project Benefits
Sulaibiya Plant in Numbers
Plant Block Diagram
      Sulaibiya Project 
Project Facilities     

The Sulaibiya Plant includes the preliminary treatment and pumping station at Ardiya, the transfer pipelines from Ardiya to Sulaibiya, and the treatment and reclamation facilities at Sulaibiya.

The preliminary treatment of the wastewater starts with the removal of sand and grease upon its arrival at Ardiya pumping station. After this, the wastewater is directed to two buffer tanks, each 67 meters in diameter and 7 meters in depth. These tanks regulate the flows arriving to Ardiya before they are pumped on to Sulaibiya.

The pumping station contains 8 pumps, of which 2 are standby units, to transfer the wastewater through three pressure pipelines, each 1400 millimetres in diameter, from Ardiya to Sulaibiya, a distance of more than 25 kilometres.

To safeguard the environment at Ardiya, in view of the pumping station’s proximity to residential areas, all facilities in this station are covered. In addition, these facilities have been furnished with state-of-the-art odour control and removal equipment and odour monitoring systems. The facilities are also surrounded by a green belt of trees to enhance the environment.

The biological treatment at Sulaibiya starts in 9 aeration tanks, each 147 meters long, 28 meters wide and 8 meters deep. The aeration tanks are supplied with air from the blower building which contains 5 blower units.

From the aeration tanks, the water flows to 9 circular secondary clarifiers, each 56 meters in diameter and 8 meters in depth. The secondary treated water then flows to a collection basin where the reclamation processes are started.

The suspended solids are directed to the gravity belt thickening building, after which they are sent to 8 aerobic digesters, each 58 meters long, 24 meters wide and 7 meters deep. These aerobic digesters are supplied with air from 5 blowers in a blower house.

After completing the digesting process, the remaining sludge is directed to the sludge drying beds. The sludge is then stored in a special area for around six months in order to make it suitable for use as a natural fertilizer.

The reclamation process starts after the arrival of the secondary treated water from the collection basin at the ultra-filtration building, which has 5 trains containing a total of 8704 filter units. These filters secure the complete removal of the suspended solids and microbes. A periodical fully automated backwash process cleans the filters regularly.

From the ultra-filtration building, the water flows to the reverse-osmosis building which contains 6 independent trains for reclamation. Each train contains 7 skids and the total number of membranes in these skids is 20,832, through which the water passes to the permeate basin.

From this basin, the reclaimed water flows through pipelines to the Ministry of Public Works’ Data Monitoring Centre (DMC) at Sulaibiya.

Most of the treatment and reclamation processes in the various Sulaibiya plant facilities are fully automated and use the latest state-of-the-art computer and control systems.



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