Phase Three (Seawater Desalination):
Phase Three (Seawater Desalination):
After the intake, seawater is transferred to the desalination unit and enters the pre-treatment section.
In the first stage, a DAF (Dissolved Air Flotation) system with 10 cells is installed, where initially, insoluble particles are flocculated and then float on the surface with the help of air injection. The effluent water from the DAF system flows into the DMF (Drum Mesh Filter) structure by gravity, without the need for pumping.
In the second stage, a DMF (Drum Mesh Filter) system with 22 cells is installed. These cells contain sand and anthracite to adsorb insoluble particles from the water.
The pre-treatment capacity is designed to be two and a half to three times that of the desalination unit, ranging from 500,000 to 600,000 cubic meters per day.
The effluent water from the DMF flows by gravity into a tank and is pumped to the reverse osmosis building or treatment section by five pumps.
In the third stage, the SWRO (Seawater Reverse Osmosis) building is located. The incoming water is distributed through a header between 10 cartridge filter chambers to capture particles larger than 5 microns at this stage before entering the membranes. After passing through the cartridge filters, the water enters a collector and is distributed through two feed pipes between the RO trains. To maintain a pressure of 60 bar for each train, a high-pressure pump is provided, totaling 9 pumps.
Each RO train consists of 317 pressure vessels, and each pressure vessel contains 7 membranes, resulting in 2,219 membranes per RO train and a total of 19,971 membranes in the RO hall.
The desalinated water is then transferred to the post-treatment section for the addition of necessary substances and adjustment of desired parameters.
Finally, the targeted indicators and the volume of desalinated water are measured in the Metering Area and compared with permissible values.
