About the experimental station

With a spirit of innovation and driven by environmental and water challenges, WTIIRA institute was established to be a leading national platform on a global level in research and development of water technologies and sustainable environmental solutions.
To achieve this ambitious vision, the institute established a specialized experimental infrastructure, including a group of stations in Jubail City in the Eastern Province in 1407 AH (1987 AD), to serve as a center for applied research in the field of water desalination.
WTIIRA institute possesses accumulated expertise and an advanced research infrastructure that enables it to study and evaluate various water treatment and desalination technologies through pilot operation models and precise simulations of system performance and solutions. This work covers various water treatment and desalination methods, as well as testing technical solutions for practical evaluation and developing innovative operational models, including technologies for extracting minerals from brine and others.
The pilot stations serve as the institute’s applied field arm, allowing it to test, evaluate, and certify industrial products such as chemicals, membranes, equipment, and new technologies for commercial use in the water sector.
The pilot stations include units for seawater pre-treatment, thermal desalination, and reverse osmosis desalination units, in addition to renewable energy systems. A specialized operation and maintenance team is capable of modifying and redesigning units to suit various research testing methodologies.

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The main units of the experimental station

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Dual Media Filter (DMF) Unit

The main purpose of the dual media filters (DMFs) is to reduce the level of SDI (Silt Density Index) before the seawater goes towards the reverse osmosis (RO) unit. Seawater usually contains Total Suspended Solids (TSS) that can negatively impact the RO process. Suspended solids include small particles, such as silt, clay, grit, organic matters, algae and other microorganisms. By removing the suspended solids we can reduce the high-pressure drop and guarantee the effectiveness of downstream filtration equipment such as precision filters, reverse osmosis membranes.

Commissioning year: 2023 - Capacity: 100 m³/hou

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Reverse Osmosis Unit1​

RO stands for Reverse Osmosis, which means reverse filtration against osmotic pressure. RO membrane acts as a molecular sieve to remove up to 99.5% of the solids, microbes, small molecules and organic compounds of molecular weights greater than 300 microns or particles of >0.001 microns in size. It uses semi-permeable membrane to separate water molecules from other suspended and dissolved substances by applying pressure to overcome osmotic pressure.

Commissioning year: 2011 - Capacity: 10 m³/hour​​

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Nano filtration unit 1

A nanofiltration (NF) membrane is classified as a pressure-driven membrane process, falling between a reverse osmosis (RO) and ultrafiltration (UF) membrane in pore size. It has pore size in the range of 0.1–1 nm with molecular weight cut-off (MWCO) from 200 to 1000 Da. Nanofiltration has been adopted and frequently used in desalination due to its excellent performance in removing organics and bacteria from water. Moreover, its property to separate divalent ions from seawater has been recognized as the vital process feature in seawater brine mining.

Commissioning year: 2010 - Capacity 20 m³/hour

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