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High-Pressure Pumps & Energy Recovery

We supply high-pressure pumps and energy recovery devices for seawater reverse osmosis desalination plants — centrifugal high-pressure pumps, booster pumps, and isobaric energy recovery exchangers.

High-Pressure Pumps & Energy Recovery

High-pressure pumps and energy recovery devices together account for the majority of energy consumption in an SWRO plant — and the majority of energy saving potential. Modern isobaric ERDs recover up to 98% of the energy in the concentrate stream. Selecting and integrating these components correctly is critical for achieving target specific energy consumption (SEC) in the 3–4 kWh/m³ range now achievable in state-of-the-art plants.

What we supply

  • Multi-stage centrifugal high-pressure pumps — 60–80 bar for SWRO
  • Booster pumps for ERD outlet pressure correction
  • Isobaric pressure exchangers (PX) — rotary piston ERD
  • Turbocharger ERDs for smaller capacity plants
  • Variable speed drive (VSD) systems for pump flow control
  • Low-pressure feed pumps and cartridge filter housings
  • Concentrate disposal pumps and outfall equipment

How the project proceeds

  1. Define the plant capacity and target SEC; select HP pump and ERD configuration
  2. Size the pumping system and model energy consumption across the operating range
  3. Source equipment from qualified pump and ERD manufacturers
  4. Support installation, commissioning, and performance testing

Why Infinity

Energy cost is the primary operating cost for desalination plants in the GCC. We select pump and ERD equipment for whole-life cost, not lowest capital cost — a 0.5 kWh/m³ improvement in SEC on a 100,000 m³/day plant represents millions of dollars in annual energy savings.

What SEC can be achieved with modern HP pump and ERD combinations?

State-of-the-art SWRO with isobaric ERD achieves 3.0–3.5 kWh/m³ SEC at 42% recovery — depending on feed salinity and product water requirements.

Do you supply VSDs for HP pump flow control?

Yes — variable speed drives for HP pump motors are available from leading manufacturers, enabling efficient operation across the full plant capacity range.

Can you supply HP pumps for high-salinity Red Sea feedwater?

Yes — HP pumps rated for high TDS feed (up to 45,000 ppm) and the associated pressures required for Red Sea SWRO are available.

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