Tecnium’s Role in the Water Desalination Industry

Desalination water treatment plant solutions

Desalination plants are becoming increasingly important in the fight against drinking water shortages in certain areas and countries worldwide. With the escalating demand for water and the diminishing availability of freshwater sources, the capability to convert saltwater into consumable water has become a pressing necessity.

The present technology enables the production of water of exceptional quality through desalination procedures in specific plants. Tecnium can supply various products tailored to each plant corrosive conditions and specific needs.

What is the process of water desalination?

Desalination may seem straightforward at first glance – removing salt and other minerals from saltwater.

However, this is an oversimplification of a complex process that requires a sophisticated sequence of procedures vitally essential for producing quality drinking water.

These series of procedures can be divided into three main stages: pretreatment, desalination, and post-treatment.

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  • Pretreatment: The first stage of the desalination process involves preparing the saltwater for the actual desalination process. Pretreatment is performed to remove suspended solids, algae, organic compounds, and biological impurities that could harm desalination membranes or reduce their efficiency.

    These processes may include coagulation, flocculation, sedimentation, and filtration, each playing a unique role in preparing saltwater for desalination.


  • Desalination: The desalination stage is where the primary separation of salt and other minerals from water occurs. There are various desalination technologies, but the most commonly used is reverse osmosis (RO). In RO, saltwater is pressurized and forced through a semipermeable membrane.

    The high pressure drives the water through the membrane, leaving behind salt and other minerals. It’s important to note that while this is the most common process, there are other desalination technologies, like multi-stage distillation and vapour compression evaporation, each with its advantages and challenges.


  • Post-treatment: The third and final stage of the desalination process involves improving and adjusting the desalinated water quality.

    Post-treatment may include remineralization (to replace essential minerals removed during the desalination process), disinfection (to eliminate any remaining bacteria or viruses), and pH adjustment. Stabilization can also be used to prevent corrosion in the water pipes.


Tecnium’s Solutions for modern desalination plants

Plastic / PRFV Tanks

 Aware of the need for safe and durable storage, Tecnium provides a range of plastic / PRFV tanks designed for desalinated water storage. These tanks, made with high-quality materials, ensure the integrity of the stored water and prevent corrosion.

Specialized Pumps

Pumps are vital for the desalination process, and Tecnium offers a range of specialized pumps specifically designed for desalination plants.

These pumps, made with high-quality plastic materials, are corrosion-resistant and optimized both chemically and mechanically to handle the specific type of fluid found in desalination processes.

  • Submersible vertical pumps: Tecnium provides a broad catalogue of submersible pumps made of high-strength plastic materials. These pumps, equipped with a cantilevered shaft, are specially designed to operate dry and are ideal for handling charged liquids. Capable of providing flow rates up to 500 m³/h and reaching heights up to 100 mcl, they demonstrate their exceptional efficiency and robustness in any operation.

  • Process pumps: Following EN 22858 / ISO-5199 standards, Tecnium offers high-quality process pumps, robust, and designed for continuous operation. These pumps come in a wide range of plastic materials and feature mechanical seals that adapt perfectly, both chemically and mechanically, to the fluid to be transported. Their performance is impressive, providing flow rates up to 1,500 m³/h and reaching heights up to 120 mcl.

  • Motor Pumps: Tecnium presents its direct coupling pumps, designed according to EN 22858 standards. These pumps provide an economical solution without compromising reliability, thanks to their inherent robustness, a distinctive feature of a standardized process pump. Their performance is remarkable, able to handle flow rates up to 250 m3/h and reach heights up to 100 mcl.

Committed to Innovation and Industry in equal measure

In a world where drinking water is becoming an increasingly scarce resource, desalination plants are becoming an essential part of our water infrastructure. With Tecnium’s advanced solutions, desalination is now more efficient, safer, and more reliable than ever.

At Tecnium, we are committed to continuing to innovate and deliver cutting-edge solutions to help ensure everyone, anywhere in the world, has access to clean drinking water. If you want detailed information and specific advice on any of our desalination plant solutions, you only have to contact our commercial department.

You can do this by filling out the contact form on our website, calling by phone at (34) 93 874 84 80, or sending an email to tecnium@tecnium.es

Lastly, it’s important to note that we also develop specific solutions for water purification plants and wastewater treatment plants, among other sectors. Tell us what you need, and we will offer you a customized and tailor-made solution. It’s that simple.