Recirculation Flow in Sludge Recycle and Rate of Returned Sludge Formulas

Recirculation Flow is the flow generated in recirculation tank collecting the primary treated effluent from a pretreatment component. And is denoted by Q_r. Recirculation Flow is usually measured using the Cubic Meter per Second for Volumetric Flow Rate. Note that the value of Recirculation Flow is always positive.

Sludge Recycle and Rate of Returned Sludge formulas that make use of Recirculation Flow

fxSludge Recirculation RatioGo

fxSewage Discharge given Sludge Recirculation RatioGo

fxSludge Volume Index given Sewage Discharge and MLSSGo

FAQ

What is the Recirculation Flow?

Recirculation Flow is the flow generated in recirculation tank collecting the primary treated effluent from a pretreatment component. Recirculation Flow is usually measured using the Cubic Meter per Second for Volumetric Flow Rate. Note that the value of Recirculation Flow is always positive.

Can the Recirculation Flow be negative?

No, the Recirculation Flow, measured in Volumetric Flow Rate cannot be negative.

What unit is used to measure Recirculation Flow?

Recirculation Flow is usually measured using the Cubic Meter per Second[m³/s] for Volumetric Flow Rate. Cubic Meter per Day[m³/s], Cubic Meter per Hour[m³/s], Cubic Meter per Minute[m³/s] are the few other units in which Recirculation Flow can be measured.

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