Return Activated Sludge Flow Rate Calculator

✖The Average Daily Influent Flow Rate is the total volume of wastewater entering a treatment facility per day, averaged over a specified period, typically measured in cubic meters per day (m³/day).ⓘ Average Daily Influent Flow Rate [Q]

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✖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 Flow Rate [RAS]

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Return Activated Sludge Flow Rate Solution

STEP 0: Pre-Calculation Summary

Formula Used

Return Activated Sludge = 1.25*Average Daily Influent Flow Rate
RAS = 1.25*Q
This formula uses 2 Variables

Variables Used

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.
Average Daily Influent Flow Rate - (Measured in Cubic Meter per Second) - The Average Daily Influent Flow Rate is the total volume of wastewater entering a treatment facility per day, averaged over a specified period, typically measured in cubic meters per day (m³/day).

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

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

Evaluating ... ...

RAS = 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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Created by Suraj Kumar

Birsa Institute of Technology (BIT), Sindri

Suraj Kumar has created this Calculator and 2100+ more calculators!

Verified by Ishita Goyal

Meerut Institute of Engineering and Technology (MIET), Meerut

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Return Activated Sludge Flow Rate Formula

LaTeX Go

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

What is Return Activated Sludge Flow Rate?

Return Activated Sludge Flow Rate 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 is defined as rate at which activated sludge from the secondary clarifier is returned to the biological treatment process, typically measured in cubic meters per day (m³/day). Return Activated Sludge is denoted by RAS 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 -> 864000 = 1.25*9.25925925925926E-05.

FAQ

What is Return Activated Sludge Flow Rate?

The Return Activated Sludge Flow Rate is defined as rate at which activated sludge from the secondary clarifier is returned to the biological treatment process, typically measured in cubic meters per day (m³/day) and is represented as RAS = 1.25*Q or Return Activated Sludge = 1.25*Average Daily Influent Flow Rate. The Average Daily Influent Flow Rate is the total volume of wastewater entering a treatment facility per day, averaged over a specified period, typically measured in cubic meters per day (m³/day).

How to calculate Return Activated Sludge Flow Rate?

The Return Activated Sludge Flow Rate is defined as rate at which activated sludge from the secondary clarifier is returned to the biological treatment process, typically measured in cubic meters per day (m³/day) 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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