Specialists in Desalination Pumps for Water Treatment

Desalination consists in turning seawater into potable water. The process removes the salt and impurities from seawater. PCM offers a comprehensive range of desalination pumps engineered for water transfer, chemical dosing, and sludge removal, combining efficiency, durability, and environmental responsibility.

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Desalinization

Challenges in Desalination

 

Abrasion resistance

Seawater contains numerous abrasive particles—such as sand, clay, seaweed, and organic debris. Pumps used in desalination must resist continuous wear caused by these solids. As the rotor and stator are in direct contact with the pumped medium, they must be manufactured from materials that can withstand high abrasion while maintaining operational reliability.

High pressure pump

Desalination, especially via reverse osmosis, requires pumping systems capable of handling high pressures. During reverse osmosis, filtered seawater is pushed through semi-permeable membranes to separate salt and other dissolved solids. Efficient desalination requires pumps that provide both high pressure and high flow rates without compromising longevity.

OPEX and CAPEX Optimization 

Desalination is energy-intensive. Pumps must be engineered for high efficiency and low energy consumption to reduce the overall operational costs. PCM pumps are eco-designed to lower energy usage while ensuring reliable, long-term performance in demanding desalination environments.

Pumps Desalination

Transfer the filtered seawater to the reverse osmosis membranes

Following pre-filtration, seawater must be transported to various treatment stages, including the reverse osmosis unit. This requires pumps capable of handling medium to highly abrasive liquids while maintaining a consistent flow rate and pressure. At this stage, high-pressure pumps are used to push filtered seawater through membranes to remove salt, microorganisms, and other impurities. Once desalinated, the water is transferred at low pressure for further treatment or distribution. 

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Chemical Dosing and Transfer

After solid removal, treated seawater undergoes chemical dosing to eliminate pathogens and stabilize water quality. Common chemicals used include chlorine, lime milk, activated carbon, and hydrogen peroxide. Accurate and repeatable dosing is critical for water safety and regulatory compliance.

 

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PCM Solutions

Applications

Benefits

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Picto pump - PCM EcoMoineau C PCM EcoMoineau™ C

Robust choice for transferring seawater into reverse osmosis systems

Compact, high-pressure progressing cavity pump ideal for continuous and controlled flow

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Picto pump - PCM Moineau A PCM EcoMoineau™ A

High-pressure transfer pump for reverse osmosis systems

Designed in duplex or super dulpex, which makes them particulary resistant to corrosion (due to the salt). 

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Picto pump - PCM Delasco Z PCM Delasco™ Z

Engineered for the precise dosing for low-flow aggressive chemicals dosing applications

Simplifies servicing and reduces downtime

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Picto pump - PCM Delasco™ PCM Delasco™ DX

Handles abrasive substances like chlorine, lime milk, and activated carbon. 

Features a simple, hose-based design that minimizes maintenance while maximizing durability.

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Picto pump - PCM Lagoa PCM Lagoa

Metering pump, delivers exceptional accuracy in dosing a wide variety of chemical agents.

Incorporates a piston-driven diaphragm that ensures reliable metering performance.

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FAQ - Desalination 

 

Why are progressing cavity pumps the best choice to treat seawater?

Progressing cavity pumps provide continuous steady flow, which reduce downtime and energy consumption. They can transfer a wide range of products. They also are designed to handle abrasive or corrosive environment.

Can I install the pumping solutions on an existing installation? 

The PCM EcoMoineau™ MX, the PCM EcMoineau™ C and the Delasco™ DX can be installed on existing systems. Compact, they adapt to a wide range of environments. 

Why PCM desalination pumps are the best choice?

PCM desalination pumps are particularly resistant and efficient. The in-house developed elastomers respond to any specific constraints and requirements. Our team is dedicated to providing the best possible solutions to our customers constraints like abrasion, high pressure or corrosion.

 

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