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Hydraulic Retention Time

The average amount of time that liquid and soluble compounds stay in a reactor or tank. It is calculated by dividing the volume of a reactor (e.g. m3) by the influent flow rate (e.t. m3/day). In wastewater treatment systems the HRT influence the treatment efficiency and is therefore an important design parameter.

Synonyms and Abbreviation
Liquid Retention Time
HRT
Detention Time

Hydraulic Retention Time

The average amount of time that liquid and soluble compounds stay in a reactor or tank. It is calculated by dividing the volume of a reactor (e.g. m3) by the influent flow rate (e.t. m3/day). In wastewater treatment systems the HRT influence the treatment efficiency and is therefore an important design parameter.

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