Description
Return share = dryMass/wetMass and waterMass = wetMass-dryMass.
Mass-based environmental quantities depend on their basis: gross versus tare-corrected mass, wet versus dry solids, or material versus void volume. A ratio or density conversion is meaningful only when those bases and units agree.
Return share = dryMass/wetMass and waterMass = wetMass-dryMass.
When to use this tool
Use Sludge Dry Solids Share when reconciling supplied environmental masses, solids fractions or material volumes.
How to use the tool and how it works
- Enter dryMass, wetMass. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read share, waterMass. Use the output convention below.
Require positive wetMass and dryMass between zero and wetMass. Return share = dryMass/wetMass and waterMass = wetMass-dryMass. Use one mass unit; share is the dry-solids fraction of wet mass, not dry-basis moisture content.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| dryMass | Dry Mass | Required. Finite number; minimum 0. |
| wetMass | Wet Mass | Required. Finite number; strictly above 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| share | Dimensionless selected contribution divided by the stated total; not a percentage. | Required. Finite number. |
| waterMass | Water Mass | Required. Finite number. |
{
"input": {
"dryMass": 2,
"wetMass": 10
},
"output": {
"share": 0.2,
"waterMass": 8
}
}Limitations and assumptions
- Drying method, volatile material loss and bound water are not distinguished. This mass ratio does not determine sludge treatment, handling safety or disposal suitability.
- 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 density, method-specific moisture procedures and uncertainty analysis where simple homogeneous-material assumptions are insufficient.
References
Similar or alternative tools
- Soil Moisture Wet Dry Basis Pair
Return waterMass = wetMass-dryMass, dryBasis = waterMass/dryMass and wetBasis = waterMass/wetMass.
- Activated Sludge Solids Inventory Term
Return inventory = aerationVolume*aerationSolids+clarifierVolume*clarifierSolids and solidsRetentionDays = inventory/(wastedMassPerDay+effluentMassPerDay).