Description
Express bed hydraulic surface loading in metres and millimetres per day.
Environmental engineering quantities depend on compatible mass/volume units, reference levels, usable geometry and complete flow boundaries. Nominal bed volume differs from pore-water volume, and hydraulic surface loading differs from pore velocity. A supplied removal or recovery fraction does not establish actual treatment performance or safe operation.
Express bed hydraulic surface loading in metres and millimetres per day.
When to use this tool
Use Treatment BED Hydraulic Loading Unit when checking the stated benign engineering mass, volume, reference or throughput term.
How to use the tool and how it works
- Enter flowCubicMetersPerDay, bedAreaSquareMeters. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read loadingMetersPerDay, loadingMillimetersPerDay. Use the output convention below.
Require flow>=0 in m³/day and bedArea>0 in m². Return flow/area as m/day and multiply by 1000 for mm/day.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| flowCubicMetersPerDay | Flow Cubic Meters Per Day | Required. Finite number; minimum 0. |
| bedAreaSquareMeters | Bed Area Square Meters | Required. Finite number; strictly above 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| loadingMetersPerDay | Volumetric flow per bed surface area, not interstitial/pore-water speed. | Required. Finite number. |
| loadingMillimetersPerDay | Loading Millimeters Per Day | Required. Finite number. |
{
"input": {
"flowCubicMetersPerDay": 20,
"bedAreaSquareMeters": 100
},
"output": {
"loadingMetersPerDay": 0.2,
"loadingMillimetersPerDay": 200
}
}Limitations and assumptions
- This is nominal hydraulic surface loading, not pore-water velocity, contact time or a recommended bed-operating limit.
- Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
- Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.
Alternative or Complementary methods
Use measured operating conditions, verified equipment properties and a complete suitable process model with qualified engineering/environmental review for actual design and operation.
References
Similar or alternative tools
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