Hydraulic Retention Time in Environmental Engineering Formulas

Hydraulic Retention Time referred as the ratio between the reactor volume and the feed flow rate, represents the average time the cells and substrates stay inside the reactor. And is denoted by θ. Hydraulic Retention Time is usually measured using the Hour for Time. Note that the value of Hydraulic Retention Time is always positive. Typically, the value of Hydraulic Retention Time lies in the range from 3 to 5.

Environmental Engineering formulas that make use of Hydraulic Retention Time

fxVolume Required for Anaerobic DigesterGo

fxInfluent Sludge Flow Rate given Volume Required for Anaerobic DigesterGo

FAQ

What is the Hydraulic Retention Time?

Hydraulic Retention Time referred as the ratio between the reactor volume and the feed flow rate, represents the average time the cells and substrates stay inside the reactor. Hydraulic Retention Time is usually measured using the Hour for Time. Note that the value of Hydraulic Retention Time is always positive. Typically, the value of Hydraulic Retention Time lies in the range from 3 to 5.

Can the Hydraulic Retention Time be negative?

No, the Hydraulic Retention Time, measured in Time cannot be negative.

What unit is used to measure Hydraulic Retention Time?

Hydraulic Retention Time is usually measured using the Hour[h] for Time. Second[h], Millisecond[h], Microsecond[h] are the few other units in which Hydraulic Retention Time can be measured.

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