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WAS Pumping Rate from Return Line given RAS Pumping Rate from Aeration Tank Formula

GoWAS Pumping Rate from Return Line given Wasting Rate from Return Line Formula

GoWAS Pumping Rate using Wasting Rate from Return Line when Concentration of Solid in Effluent is Low Formula

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WAS Pumping Rate from Reactor is the total amount of waste activated sludge that comes out from the reactor. Check FAQs

Q w = ((\frac{X}{X r}) \cdot (Q a + RAS)) - RAS

Q_w - WAS Pumping Rate from Reactor?X - MLSS?X_r - Sludge Concentration in Return Line?Q_a - Average Daily Influent Flow Rate?RAS - Return Activated Sludge?

WAS Pumping Rate from Return Line given RAS Pumping Rate from Aeration Tank Example

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Here is how the WAS Pumping Rate from Return Line given RAS Pumping Rate from Aeration Tank equation looks like with Values.

Here is how the WAS Pumping Rate from Return Line given RAS Pumping Rate from Aeration Tank equation looks like with Units.

Here is how the WAS Pumping Rate from Return Line given RAS Pumping Rate from Aeration Tank equation looks like.

57.2 = ((\frac{1200}{200}) \cdot (1.2 + 10)) - 10

57.2m³/d = ((\frac{1200mg/L}{200mg/L}) \cdot (1.2m³/d + 10m³/d)) - 10m³/d

57.2 = ((\frac{1200}{200}) \cdot (1.2 + 10)) - 10

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WAS Pumping Rate from Return Line given RAS Pumping Rate from Aeration Tank Solution

Follow our step by step solution on how to calculate WAS Pumping Rate from Return Line given RAS Pumping Rate from Aeration Tank?

FIRST Step Consider the formula

Q w = ((\frac{X}{X r}) \cdot (Q a + RAS)) - RAS

Next Step Substitute values of Variables

∴

Q w = ((\frac{1200mg/L}{200mg/L}) \cdot (1.2m³/d + 10m³/d)) - 10m³/d

Next Step Convert Units

∴

Q w = ((\frac{1.2kg/m³}{0.2kg/m³}) \cdot (1.4E-5m³/s + 0.0001m³/s)) - 0.0001m³/s

Next Step Prepare to Evaluate

∴

Q w = ((\frac{1.2}{0.2}) \cdot (1.4E-5 + 0.0001)) - 0.0001

Next Step Evaluate

∴

Q w = 0.000662037037037038m³/s

Next Step Convert to Output's Unit

∴

Q w = 57.2000000000001m³/d

LAST Step Rounding Answer

∴

Q w = 57.2m³/d

WAS Pumping Rate from Return Line given RAS Pumping Rate from Aeration Tank Formula Elements

Variables

WAS Pumping Rate from Reactor

WAS Pumping Rate from Reactor is the total amount of waste activated sludge that comes out from the reactor.

Symbol: Q_w

Measurement: Volumetric Flow RateUnit: m³/d

Note: Value should be greater than 0.

Formulas to find WAS Pumping Rate from Reactor

MLSS

MLSS is the sum of volatile suspended solids (organics) and fixed suspended solids (inorganics).

Symbol: X

Measurement: DensityUnit: mg/L

Note: Value should be between 1000 to 6500.

Formulas to find MLSS

Sludge Concentration in Return Line

Sludge Concentration in Return Line refers to the concentration of suspended solids in the sludge that is being pumped back from the secondary clarifier to the aeration tank.

Symbol: X_r

Measurement: DensityUnit: mg/L

Note: Value should be greater than 0.

Formulas to find Sludge Concentration in Return Line

Average Daily Influent Flow Rate

Average Daily Influent Flow Rate is the total discharge that comes in the reactor.

Symbol: Q_a

Measurement: Volumetric Flow RateUnit: m³/d

Note: Value should be greater than 0.

Formulas to find Average Daily Influent Flow Rate

Return Activated Sludge

Return Activated Sludge is the portion of settled biomass that is recycled from the secondary clarifier back to the aeration tank in a wastewater treatment process.

Symbol: RAS

Measurement: Volumetric Flow RateUnit: m³/d

Note: Value should be greater than 0.

Formulas to find Return Activated Sludge

Other Formulas to find WAS Pumping Rate from Reactor

Go WAS Pumping Rate from Return Line given Wasting Rate from Return Line

Q w = (V \cdot \frac{X}{θ c \cdot X r}) - (Q e \cdot \frac{X e}{X r})

Go WAS Pumping Rate using Wasting Rate from Return Line when Concentration of Solid in Effluent is Low

Q w = V \cdot \frac{X}{θ c \cdot X r}

Go WAS Pumping Rate from Aeration Tank

Q w = \frac{V}{θ c}

How to Evaluate WAS Pumping Rate from Return Line given RAS Pumping Rate from Aeration Tank?

WAS Pumping Rate from Return Line given RAS Pumping Rate from Aeration Tank evaluator uses WAS Pumping Rate from Reactor = ((MLSS/Sludge Concentration in Return Line)*(Average Daily Influent Flow Rate+Return Activated Sludge))-Return Activated Sludge to evaluate the WAS Pumping Rate from Reactor, The WAS Pumping Rate from Return Line given RAS Pumping Rate from Aeration Tank formula is defined as the total amount of waste activated sludge which is produced from the return line. WAS Pumping Rate from Reactor is denoted by Q_w symbol.

How to evaluate WAS Pumping Rate from Return Line given RAS Pumping Rate from Aeration Tank using this online evaluator? To use this online evaluator for WAS Pumping Rate from Return Line given RAS Pumping Rate from Aeration Tank, enter MLSS (X), Sludge Concentration in Return Line (X_r), Average Daily Influent Flow Rate (Q_a) & Return Activated Sludge (RAS) and hit the calculate button.

FAQs on WAS Pumping Rate from Return Line given RAS Pumping Rate from Aeration Tank

What is the formula to find WAS Pumping Rate from Return Line given RAS Pumping Rate from Aeration Tank?

The formula of WAS Pumping Rate from Return Line given RAS Pumping Rate from Aeration Tank is expressed as WAS Pumping Rate from Reactor = ((MLSS/Sludge Concentration in Return Line)*(Average Daily Influent Flow Rate+Return Activated Sludge))-Return Activated Sludge. Here is an example- 4.9E+6 = ((1.2/0.2)*(1.38888888888889E-05+0.000115740740740741))-0.000115740740740741.

How to calculate WAS Pumping Rate from Return Line given RAS Pumping Rate from Aeration Tank?

With MLSS (X), Sludge Concentration in Return Line (X_r), Average Daily Influent Flow Rate (Q_a) & Return Activated Sludge (RAS) we can find WAS Pumping Rate from Return Line given RAS Pumping Rate from Aeration Tank using the formula - WAS Pumping Rate from Reactor = ((MLSS/Sludge Concentration in Return Line)*(Average Daily Influent Flow Rate+Return Activated Sludge))-Return Activated Sludge.

What are the other ways to Calculate WAS Pumping Rate from Reactor?

Here are the different ways to Calculate WAS Pumping Rate from Reactor-

WAS Pumping Rate from Reactor=(Reactor Volume*MLSS/(Mean Cell Residence Time*Sludge Concentration in Return Line))-(Effluent Flow Rate*Solid Concentration in Effluent/Sludge Concentration in Return Line)
WAS Pumping Rate from Reactor=Reactor Volume*MLSS/(Mean Cell Residence Time*Sludge Concentration in Return Line)
WAS Pumping Rate from Reactor=Reactor Volume/Mean Cell Residence Time

Can the WAS Pumping Rate from Return Line given RAS Pumping Rate from Aeration Tank be negative?

No, the WAS Pumping Rate from Return Line given RAS Pumping Rate from Aeration Tank, measured in Volumetric Flow Rate cannot be negative.

Which unit is used to measure WAS Pumping Rate from Return Line given RAS Pumping Rate from Aeration Tank?

WAS Pumping Rate from Return Line given RAS Pumping Rate from Aeration Tank is usually measured using the Cubic Meter per Day[m³/d] for Volumetric Flow Rate. Cubic Meter per Second[m³/d], Cubic Meter per Hour[m³/d], Cubic Meter per Minute[m³/d] are the few other units in which WAS Pumping Rate from Return Line given RAS Pumping Rate from Aeration Tank can be measured.

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WAS Pumping Rate from Return Line given RAS Pumping Rate from Aeration Tank Formula

​GoWAS Pumping Rate from Return Line given Wasting Rate from Return Line Formula

​GoWAS Pumping Rate using Wasting Rate from Return Line when Concentration of Solid in Effluent is Low Formula

WAS Pumping Rate from Return Line given RAS Pumping Rate from Aeration Tank Example

WAS Pumping Rate from Return Line given RAS Pumping Rate from Aeration Tank Solution

WAS Pumping Rate from Return Line given RAS Pumping Rate from Aeration Tank Formula Elements

Other Formulas to find WAS Pumping Rate from Reactor

How to Evaluate WAS Pumping Rate from Return Line given RAS Pumping Rate from Aeration Tank?

FAQs on WAS Pumping Rate from Return Line given RAS Pumping Rate from Aeration Tank

Variable Name

GoWAS Pumping Rate from Return Line given Wasting Rate from Return Line Formula

GoWAS Pumping Rate using Wasting Rate from Return Line when Concentration of Solid in Effluent is Low Formula