Black & Veatch was awarded a contract to provide engineering services associated with the design and construction of a new desalination plant at Madinat Al-Jubail Al-Sinaiyah Industrial City in Saudi Arabia. The industrial city of Jubail is located on the Arabian Gulf, 100 km (62 mi.) north of the Dammam metropolitan area.
The project included a new 100,000 m3/day (26.4 mgd) MSF desalination plant executed in two phases (50,000 m3/day during each phase), a 160 MW (80 MW Phase 1) gas turbine power generation plant with heat recovery steam generators (boilers) and a 115/34.5/4/16 kV electrical power system feeding the new desalination plant. The desalination plant included chemical treatment, product water conditioning, storage and distribution, brine discharge, power feeder tie-ins to all existing desalination plant facilities, a seawater cooling plant, and the interface with the Saudi Electric Company's power system.
Desalination Process Component
Based on detailed technology selection study performed by Black & Veatch, multi-stage flash (MSF) was chosen as the appropriate desalination technology:
- Pretreatment: Screening and pre-chlorination.
- Capacity and Train Arrangement: 100,000 m3/day (26.4 mgd) MSF, executed in two phases [50,000 m3/day (3.3 mgd) each phase].
- Percent Recovery: Performance Ratio 10.
- Feedwater TDS: 41,000 - 45,000.
- Brine Disposal: Marine outfall.
Other Key Project Issues
The project also involved:
- Selection of type of intake/outfall facility.
- Selection of plant site.
- Geotechnical investigations.
- Other support services as required by the Royal Commission.