Description
Return load = concentration*flow and ratio = load/referenceLoad.
A pollutant load combines concentration with a compatible flow, volume or activity factor. A load rate has amount-per-time units, whereas an integrated load also includes duration; concentration differences alone do not describe removal when flows differ.
Return load = concentration*flow and ratio = load/referenceLoad.
When to use this tool
Use Effluent Load Reference Ratio when checking one supplied emission, transport or treatment mass-balance contribution.
How to use the tool and how it works
- Enter concentration, flow, referenceLoad. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read load, ratio. Use the output convention below.
Require nonnegative concentration and flow and positive referenceLoad. Return load = concentration*flow and ratio = load/referenceLoad. concentration and flow must produce the same mass/time or amount/time unit as referenceLoad.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| concentration | Amount per volume, in a unit compatible with the supplied flow or volume. | Required. Finite number; minimum 0. |
| flow | Volume per time, on the concentration and duration unit basis used in the formula. | Required. Finite number; minimum 0. |
| referenceLoad | Reference Load | Required. Finite number; strictly above 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| load | Load | Required. Finite number. |
| ratio | Dimensionless comparison using the stated reference denominator. | Required. Finite number. |
{
"input": {
"concentration": 2,
"flow": 3,
"referenceLoad": 12
},
"output": {
"load": 6,
"ratio": 0.5
}
}Limitations and assumptions
- The reference is supplied and is not automatically a discharge limit. No duration integration, temporal averaging rule, treatment assessment or compliance conclusion is included.
- 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
Integrate changing measurements over time and reconcile storage and reactions when a constant-condition product is insufficient.
References
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