Convert a daily water treatment product-water target into the continuous feed flow required during available operating hours, then apply recovery and a design peak factor.
The main result is a planning estimate for design feed flow. 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/day over 20 hours at 85% recovery with a 1.15 peak factor, design feed flow is 33.82 m³/h.
It is the continuous feed flow needed during the entered operating hours, with the peak factor applied for design allowance.
Lower recovery means more feed must enter the process to deliver the same product-water volume.
Yes. Use 24 for a continuously operating plant, provided downtime is already reflected in the daily product target or peak factor.
It appears as reject or residual flow, calculated as feed flow minus product flow.
No. Pump head, velocity, redundancy, backwash, transient flow, and hydraulic losses require separate engineering checks.
| Variable | Unit | Use |
|---|---|---|
| Required product water | m³/day | Net daily water delivery target. |
| Operating time | hours/day | Available production time. |
| Recovery rate | % | Product flow divided by feed flow. |
| Design peak factor | × | Allowance above average flow. |