Detention Time
Calculates the theoretical detention (residence) time of liquid in a tank or basin at a given flow. Operators use it for chlorine contact basins (CT verification), aeration basins, anaerobic digesters, and equalization basins.
Detention Time
Calculate how long liquid theoretically stays in a tank or basin at a given flow rate.
Enter all values above to calculate.
When you'd use this
Calculates the theoretical detention (residence) time of liquid in a tank or basin at a given flow. Operators use it for chlorine contact basins (CT verification), aeration basins, anaerobic digesters, and equalization basins.
Category
Hydraulics & FlowUsable volume of the basin (length × width × depth × 7.48 gal/ft³, or design volume).
Flow rate through the basin in million gallons per day.
Run the math behind this reference.
Each calculator opens onto its own page with the formula, variable definitions, a worked example, and related operator math.
Sacramento Manual, Vol. I (Hydraulics and Process Control) — Detention Time in Basins.
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