Process CSTR dilution rate calculator

Calculate dilution rate and nominal hydraulic retention with your own figures.

Your numbers

Use the units shown. Results update as you change valid inputs.

Use dilution rate and nominal hydraulic retention to compare changes to your inputs. The method and limits below explain the scope.

Examples

Examples

Try the starting example

CSTR working volume (L)
100
Inlet flow (L/hour)
20
Dilution rate (1/hour)
0.2
Nominal hydraulic retention (hours)
5

Try another scenario

CSTR working volume (L)
110.00000000000001
Inlet flow (L/hour)
20
Dilution rate (1/hour)
0.181818
Nominal hydraulic retention (hours)
5.5
Calculation method

Calculation method

Dilution rate (1/hour)

Inlet flow/working volume.

Nominal hydraulic retention (hours)

Working volume/inlet flow; no biological growth kinetics inferred.

Symbols and units
a
CSTR working volume (L)
b
Inlet flow (L/hour)

Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.

Assumptions & limits

Assumptions & limits

  • Working volume, inlet flow. Returns Dilution rate and nominal retention. All coefficients and observations are user supplied; results describe only the stated mathematical model. Quantities are deterministic calculations from supplied observations and assumptions; no external data is fetched. Supported limits: Finite inputs only; numeric fields bounded as labelled. Lists and JSON records are limited to 256 entries unless a stricter tool bound is stated. No automatic design approval, legal conclusion, treatment recommendation or safety certification. CSTR working volume (L): minimum 1e-12, maximum 1000000000000.0. Inlet flow (L/hour): minimum 1e-12, maximum 1000000000000.0.
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