Monday, July 25, 2011

What is Hydraulic Retention Time

The Hydraulic retention time (HRT) also known as Hydraulic residence time or t (tau), is a measure of the average length of time that a compound remains in a constructed reactor.

Hyraulic retention time is the volume of the aeration tank divided by the influent flowrate:
HRT represent differently according to type of bioreactor. HRT is usually expressed in hours (or sometimes days).


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