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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.
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.
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.
Yes — variable speed drives for HP pump motors are available from leading manufacturers, enabling efficient operation across the full plant capacity range.
Yes — HP pumps rated for high TDS feed (up to 45,000 ppm) and the associated pressures required for Red Sea SWRO are available.
If you have any questions, get a consultation from our manager.