Recovery rate is the fraction of feed water that becomes permeate, expressed as a percentage. A 40% recovery means 40 m³ of every 100 m³ of feed exits as product water; the other 60 m³ exits as concentrate. Recovery is set by the system designer through array geometry and pump/valve control. Higher recovery shrinks feed pump and pretreatment size but raises brine TDS, osmotic backpressure, and scaling risk. Recovery is the single most important design variable in RO. It drives pump sizing, energy consumption, antiscalant dosing, and the choice of energy-recovery device. Practical SWRO recovery tops out near 50%. Beyond that, brine osmotic pressure approaches pump shutoff and scaling/biofouling risks dominate. Brackish feed has lower osmotic pressure, so even at 80% recovery the concentrate remains well below membrane pressure limits. Higher recovery cuts feed-pump flow proportionally, reducing energy/m³ permeate. But beyond ~45% on SWRO, osmotic backpressure cancels the savings. ForeverPure has supplied desalination, high-pressure pumps, and energy-recovery devices to commercial and industrial customers since 2003. Contact our engineers for sizing, quotes, or technical support.Recovery Rate
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Frequently Asked Questions
What's the maximum recovery for SWRO?
Why do brackish systems run at higher recovery than seawater?
How does recovery affect energy use?
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