Calculate net desalination recovery from matched feed and product-water meter totals, with reject volume and runtime production rate for operational context.
The main result is a planning estimate for net water recovery. Review the secondary values to verify that the implied flow, volume, or cost basis matches the intended operating case.
Planning estimate only. Site conditions, feedwater quality, permits, equipment curves, redundancy, and applicable engineering standards may change the final design.
For 500 m³ of feed and 425 m³ of net product over 24 hours with 4 hours of downtime, recovery is 85%, reject volume is 75 m³, and runtime output is 21.25 m³/h.
Recovery is product-water volume divided by feed volume. Removal efficiency describes contaminant reduction and is a different measure.
Yes. Use net product and total feed over the same reporting period so routine process losses are reflected.
No. A result above 100% indicates inconsistent meters, periods, units, or a data-entry error.
Reject volume equals feed volume minus net product-water volume for the same period.
No. Higher recovery may increase scaling, fouling, energy use, or product-quality risk depending on the process and feedwater.
| Variable | Unit | Use |
|---|---|---|
| Total feed water | m³ | Metered feed volume for one period. |
| Net product water | m³ | Usable product from the same period. |
| Downtime | hours | Optional operating context. |
| Reporting period | hours | Length of the measurement period. |