Upgrade of Central RO System in JubailProject Completion Date: October - 2002
The Royal Commission wanted to upgrade its 20 years aging RO systems in 3 different locations. They also wanted to install new media filters, degasser, and controls.
Refurbish three plants with combined capacity of 37,000 m3/day:
Plant No. 1 Flow rate: 2 x 210 m3/hr
Plant No. 2 Flow rate: 2 x 210 m3/hr
Plant No. 3 Flow rate: 3 x 210 m3/hr
TDS: < 3,500 ppm
Ca: 270 ppm
Mg: 118 ppm
Na: 751 ppm
SO4: 1,020 ppm
Cl: 1,124 ppm
HCO3: 193 ppm
So it can be supply process water to the facilities in the area:
TDS: 30 – 80 ppm
Conductivity: 60 – 150 MS/cm
The existing system was know to have trouble in fouling and scaling, also the quality of the treated water was not consistent. AES improved the design of the RO system, by reducing the flux on the membranes and also by improving recovery and efficiency of the equipment. VFDs were installed to minimize waste of energy and new set of instruments and controls were added.
Filters were replaced and new media were added to improve filtration effectiveness
Conclusion and Results:
The plant was operated successfully. Client wanted to improve recovery, so our chemical team worked closely and tested feed water quality and improved recovery to 85% by utilizing speciality antiscalant.
Results after treatment:
TDS: < 50ppm