Return Activated Sludge Flow Rate Calculator

Return Activated Sludge - (Measured in Cubic Meter per Second) - Return activated sludge flow rate will vary with each installation and with different load factors.
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.

STEP 1: Convert Input(s) to Base Unit

Average Daily Influent Flow Rate: 8 Cubic Meter per Day --> 9.25925925925926E-05 Cubic Meter per Second (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

Q_r = 1.25*Q --> 1.25*9.25925925925926E-05

Evaluating ... ...

Q_r = 0.000115740740740741

STEP 3: Convert Result to Output's Unit

0.000115740740740741 Cubic Meter per Second -->10 Cubic Meter per Day (Check conversion here)

FINAL ANSWER

10 Cubic Meter per Day <-- Return Activated Sludge

(Calculation completed in 00.004 seconds)

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Credits

Created by Suraj Kumar

Birsa Institute of Technology (BIT), Sindri

Suraj Kumar has created this Calculator and 2200+ more calculators!

Verified by Ishita Goyal

Meerut Institute of Engineering and Technology (MIET), Meerut

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< 15 Design of a Circular Settling Tank Calculators

Mixed Liquor Suspended Solids in Aeration Tank using Maximum Solids

Go MLSS = (Maximum Solids in Aeriation Tank/((Peak Discharge+Return Activated Sludge)*8.34))

Design Surface Loading Rate given Surface Area of Circular Settling Tank

Go Surface Loading Rate = (Peak Discharge/Surface Area)

Average Daily Load using Peak Discharge in Circular Settling Tanks

Go Average Daily Load = (Peak Discharge/Peaking factor)

Peaking Factor using Peak Discharge in Circular Settling Tanks

Go Peaking factor = (Peak Discharge/Average Daily Load)

Peak Discharge given Surface Area of Circular Settling Tank

Go Peak Discharge = (Surface Area*Surface Loading Rate)

Surface Area of Circular Settling Tank

Go Surface Area = (Peak Discharge/Surface Loading Rate)

Solids Processed given Actual Solid Loading Rate

Go Solid Processed = (Solid Loading Rate*Surface Area)

Assumed Solid Loading Rate of Circular Settling Tanks

Go Solid Loading Rate = (Maximum Solids/Surface Area)

Peak Discharge in Circular Settling Tanks

Go Peak Discharge = Average Daily Load*Peaking factor

Total Settling Tank Surface Area given Actual Solid Loading Rate

Go Surface Area = Solid Processed/Solid Loading Rate

Actual Solid Loading Rate of Circular Settling Tanks

Go Solid Loading Rate = Solid Processed/Surface Area

Maximum Solids given Solid Loading Rate

Go Maximum Solids = Surface Area*Solid Loading Rate

Surface Area given Solid Loading Rate

Go Surface Area = Maximum Solids/Solid Loading Rate

Influent Flow Rate given Return Activated Sludge Flow Rate

Go Average Daily Influent Flow Rate = (Return Activated Sludge/1.25)

Return Activated Sludge Flow Rate

Go Return Activated Sludge = 1.25*Average Daily Influent Flow Rate

Return Activated Sludge Flow Rate Formula

Return Activated Sludge = 1.25*Average Daily Influent Flow Rate
Q_r = 1.25*Q

What is return activated sludge flow rate ?

Returning activated sludge will vary with each installation and with different load factors. In general, it will range from 20 to 40 percent of the influent wastewater flow for diffused air and 10 to 40 percent for mechanical aeration units.

How to Calculate Return Activated Sludge Flow Rate?

Return Activated Sludge Flow Rate calculator uses Return Activated Sludge = 1.25*Average Daily Influent Flow Rate to calculate the Return Activated Sludge, The Return Activated Sludge Flow Rate will vary with each installation and with different load factors.It is calculated when we have prior knowledge of daily influent flow rate. Return Activated Sludge is denoted by Q_r symbol.

How to calculate Return Activated Sludge Flow Rate using this online calculator? To use this online calculator for Return Activated Sludge Flow Rate, enter Average Daily Influent Flow Rate (Q) and hit the calculate button. Here is how the Return Activated Sludge Flow Rate calculation can be explained with given input values -> 129600 = 1.25*9.25925925925926E-05.

FAQ

What is Return Activated Sludge Flow Rate?

The Return Activated Sludge Flow Rate will vary with each installation and with different load factors.It is calculated when we have prior knowledge of daily influent flow rate and is represented as Q_r = 1.25*Q or Return Activated Sludge = 1.25*Average Daily Influent Flow Rate. Average Daily Influent Flow Rate is the total discharge that comes in the reactor.

How to calculate Return Activated Sludge Flow Rate?

The Return Activated Sludge Flow Rate will vary with each installation and with different load factors.It is calculated when we have prior knowledge of daily influent flow rate is calculated using Return Activated Sludge = 1.25*Average Daily Influent Flow Rate. To calculate Return Activated Sludge Flow Rate, you need Average Daily Influent Flow Rate (Q). With our tool, you need to enter the respective value for Average Daily Influent Flow Rate and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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