King Khalid International AirportProject Completion Date: October - 1998
MODA wanted to upgrade the aging RO plant in King Khalid International Airport. The plant was facing lot of problems due to huge influx of iron from deep wells.
Client wanted to Refurbish five skids with combined capacity of 14,000 m3/day:
TDS: < 1,500 ppm
Ca: 300 ppm
Mg: 80 ppm
Na: 550 ppm
SO4: 420 ppm
Cl: 400 ppm
HCO3: 120 ppm
Iron: < 20 ppm
So it can be supply process water to the facilities in the area:
TDS: < 120 ppm
Silica < 1 ppm
AES went ahead and replaced existing hollow fiber membranes with the new technology of spiral wound membranes. The challenge was to convince the client with the new technology, since it was new in the market.
AES also improved removal of iron in the pretreatment by introducing aeration by natural means, through cascade aeration.
AES also improved on the pumping efficiency by installing new efficient pumps.
Conclusion and Results:
The plant was operated successfully to client high expectations. Plant is still functioning after more than 18 years with same set of membranes replaced by AES. Minor membranes replacement occurred due to natural wear and tear.
Results after treatment:
TDS: < 60ppm
Hardness: < 40 ppm