Calculating the Hydraulic Retention Time (HRT) or t (tau)
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Calculate the Hydraulic Retention Time
Below you can find the typical formulas, coefficients and empirical data used to establish the basic design of a complete mix suspended growth biological sewage wastewater process.
To use this calculator please fill in the input value data of your sewer wastewater and as a result some basic plant design and effluent BOD data will follow out of the calculations. If the normal sewer water characteristics are unknown, please press the "typical data" button for an auto fill of the input fields.