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

✖MLSS is the sum of volatile suspended solids (organics) and fixed suspended solids (inorganics).ⓘ MLSS [X]			+10% -10%
✖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.ⓘ Sludge Concentration in Return Line [X_r]			+10% -10%
✖Average Daily Influent Flow Rate is the total discharge that comes in the reactor.ⓘ Average Daily Influent Flow Rate [Q_a]			+10% -10%
✖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.ⓘ Return Activated Sludge [RAS]			+10% -10%

✖WAS Pumping Rate from Reactor is the total amount of waste activated sludge that comes out from the reactor.ⓘ WAS Pumping Rate from Return Line given RAS Pumping Rate from Aeration Tank [Q_w]

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

STEP 0: Pre-Calculation Summary

Formula Used

WAS Pumping Rate from Reactor = ((MLSS/Sludge Concentration in Return Line)*(Average Daily Influent Flow Rate+Return Activated Sludge))-Return Activated Sludge
Q_w = ((X/X_r)*(Q_a+RAS))-RAS
This formula uses 5 Variables

Variables Used

WAS Pumping Rate from Reactor - (Measured in Cubic Meter per Second) - WAS Pumping Rate from Reactor is the total amount of waste activated sludge that comes out from the reactor.
MLSS - (Measured in Kilogram per Cubic Meter) - MLSS is the sum of volatile suspended solids (organics) and fixed suspended solids (inorganics).
Sludge Concentration in Return Line - (Measured in Kilogram per Cubic Meter) - 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.
Average Daily Influent Flow Rate - (Measured in Cubic Meter per Second) - Average Daily Influent Flow Rate is the total discharge that comes in the reactor.
Return Activated Sludge - (Measured in Cubic Meter per Second) - 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.

STEP 1: Convert Input(s) to Base Unit

MLSS: 1200 Milligram per Liter --> 1.2 Kilogram per Cubic Meter (Check conversion here)
Sludge Concentration in Return Line: 200 Milligram per Liter --> 0.2 Kilogram per Cubic Meter (Check conversion here)
Average Daily Influent Flow Rate: 1.2 Cubic Meter per Day --> 1.38888888888889E-05 Cubic Meter per Second (Check conversion here)
Return Activated Sludge: 10 Cubic Meter per Day --> 0.000115740740740741 Cubic Meter per Second (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

Q_w = ((X/X_r)*(Q_a+RAS))-RAS --> ((1.2/0.2)*(1.38888888888889E-05+0.000115740740740741))-0.000115740740740741

Evaluating ... ...

Q_w = 0.000662037037037038

STEP 3: Convert Result to Output's Unit

0.000662037037037038 Cubic Meter per Second -->57.2000000000001 Cubic Meter per Day (Check conversion here)

FINAL ANSWER

57.2000000000001 ≈ 57.2 Cubic Meter per Day <-- WAS Pumping Rate from Reactor

(Calculation completed in 00.004 seconds)

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< WAS Pumping Rate Calculators

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

LaTeX Go 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 Return Line given RAS Pumping Rate from Aeration Tank

LaTeX Go WAS Pumping Rate from Reactor = ((MLSS/Sludge Concentration in Return Line)*(Average Daily Influent Flow Rate+Return Activated Sludge))-Return Activated Sludge

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

LaTeX Go WAS Pumping Rate from Reactor = Reactor Volume*MLSS/(Mean Cell Residence Time*Sludge Concentration in Return Line)

WAS Pumping Rate from Aeration Tank

LaTeX Go WAS Pumping Rate from Reactor = Reactor Volume/Mean Cell Residence Time

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

LaTeX Go

WAS Pumping Rate from Reactor = ((MLSS/Sludge Concentration in Return Line)*(Average Daily Influent Flow Rate+Return Activated Sludge))-Return Activated Sludge
Q_w = ((X/X_r)*(Q_a+RAS))-RAS

What is Aeration Tank?

An Aeration Tank is a critical component in wastewater treatment plants, particularly in the activated sludge process. It is a large, often rectangular or circular, tank where wastewater is mixed with air (or oxygen) to support the growth of aerobic microorganisms. These microorganisms break down organic matter in the wastewater through biological processes.

How to Calculate 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 calculator uses WAS Pumping Rate from Reactor = ((MLSS/Sludge Concentration in Return Line)*(Average Daily Influent Flow Rate+Return Activated Sludge))-Return Activated Sludge to calculate 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 calculate WAS Pumping Rate from Return Line given RAS Pumping Rate from Aeration Tank using this online calculator? To use this online calculator 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. Here is how the WAS Pumping Rate from Return Line given RAS Pumping Rate from Aeration Tank calculation can be explained with given input values -> 4.9E+6 = ((1.2/0.2)*(1.38888888888889E-05+0.000115740740740741))-0.000115740740740741.

FAQ

What is WAS Pumping Rate from Return Line given RAS Pumping Rate from Aeration Tank?

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 and is represented as Q_w = ((X/X_r)*(Q_a+RAS))-RAS or WAS Pumping Rate from Reactor = ((MLSS/Sludge Concentration in Return Line)*(Average Daily Influent Flow Rate+Return Activated Sludge))-Return Activated Sludge. MLSS is the sum of volatile suspended solids (organics) and fixed suspended solids (inorganics), 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, Average Daily Influent Flow Rate is the total discharge that comes in the reactor & 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.

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

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 is calculated using WAS Pumping Rate from Reactor = ((MLSS/Sludge Concentration in Return Line)*(Average Daily Influent Flow Rate+Return Activated Sludge))-Return Activated Sludge. To calculate WAS Pumping Rate from Return Line given RAS Pumping Rate from Aeration Tank, you need MLSS (X), Sludge Concentration in Return Line (X_r), Average Daily Influent Flow Rate (Q_a) & Return Activated Sludge (RAS). With our tool, you need to enter the respective value for MLSS, Sludge Concentration in Return Line, Average Daily Influent Flow Rate & Return Activated Sludge and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

How many ways are there to calculate WAS Pumping Rate from Reactor?

In this formula, WAS Pumping Rate from Reactor uses MLSS, Sludge Concentration in Return Line, Average Daily Influent Flow Rate & Return Activated Sludge. We can use 3 other way(s) to calculate the same, which is/are as follows -

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

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