Key facts
- Capacity
- 14,000 m³/day (plant total 20,000 m³/day after the expansion)
- Technology
- SWRO, five trains with isobaric energy recovery
- Intake
- Five new beach wells with 300 m³/h pumps
- Pre-treatment
- Multimedia filters and 5 µm cartridge filters
- Energy
- 250 kW solar PV system
- Scope
- Design–build (FIDIC Yellow Book 2017), including trial operation
The second-phase expansion of the Southern Gaza Desalination Plant in Deir Al Balah: a 14,000 m³/day seawater reverse-osmosis process plant and associated works, contracted by UNICEF (contract 43264708) with European Union funding, owned by the Palestinian Water Authority and operated by CMWU. With the expansion the plant reaches 20,000 m³/day, serving about 250,000 people in the Khan Younis and Rafah governorates. MACC designed and built the expansion and also built the offshore outfall under Package 2.
Scope of work
- Feasibility investigations, verification and detailed design of all three expansion packages
- Intake: five new beach wells with casings, screens, pumps, surge-protected feed lines, well rooms, fibre-optic control and shore protection
- Pre-treatment: multimedia filters, backwash pumps and a 700 m³ intermediate tank
- SWRO process plant: five trains with cartridge filters, booster and high-pressure pumps, energy-recovery devices and recirculation pumps
- Post-treatment, chemical dosing and neutralisation, chemical storage, CIP, and a 500 m³ flushing tank with flushing pumps
- Product-water pumping station and 40 m³ brine tank with brine collection piping to the outfall
- Main steel-structure process building of about 1,500 m², tanks totalling 1,450 m³ and about 3 km of HDPE piping
- 250 kW solar PV system, electrical works and PLC/SCADA
- Roads and site works
- Testing, 30 days of automated commissioning and a supervised trial-operation (adjustment) period from October 2022
Technology and key components
- Five beach-well pumps of 300 m³/h each
- Three backwash pumps of 400 m³/h (two duty, one standby) on variable-speed drives
- Five 170 m³/h booster pumps and five multi-stage high-pressure pumps (119 m³/h) on variable-speed drives, each after a 5 µm cartridge filter
- Isobaric energy-recovery devices with five 145 m³/h recirculation pumps
- Four 300 m³/h vertical-turbine product-water pumps and two 310 m³/h flushing pumps
