Average Daily Influent Flow Rate using Recirculation Ratio Calculator

✖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%
✖Recirculation Ratio refers to the ratio of the RAS pumping rate to influent flow rate.ⓘ Recirculation Ratio [α]			+10% -10%

✖Average Daily Influent Flow Rate is the total discharge that comes in the reactor.ⓘ Average Daily Influent Flow Rate using Recirculation Ratio [Q_a]

⎘ Copy

👎

Formula

LaTeX

Reset

👍

Download Pumping Rate Formulas PDF PDF Image

Average Daily Influent Flow Rate using Recirculation Ratio Solution

STEP 0: Pre-Calculation Summary

Formula Used

Average Daily Influent Flow Rate = Return Activated Sludge/Recirculation Ratio
Q_a = RAS/α
This formula uses 3 Variables

Variables Used

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.
Recirculation Ratio - Recirculation Ratio refers to the ratio of the RAS pumping rate to influent flow rate.

STEP 1: Convert Input(s) to Base Unit

Return Activated Sludge: 10 Cubic Meter per Day --> 0.000115740740740741 Cubic Meter per Second (Check conversion here)
Recirculation Ratio: 8.3 --> No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

Q_a = RAS/α --> 0.000115740740740741/8.3

Evaluating ... ...

Q_a = 1.39446675591254E-05

STEP 3: Convert Result to Output's Unit

1.39446675591254E-05 Cubic Meter per Second -->1.20481927710844 Cubic Meter per Day (Check conversion here)

FINAL ANSWER

1.20481927710844 ≈ 1.204819 Cubic Meter per Day <-- Average Daily Influent Flow Rate

(Calculation completed in 00.008 seconds)

You are here -

Home » Engineering » Civil » Environmental Engineering » Design of a Complete Mix Activated Sludge Reactor » Pumping Rate » Average Daily Influent Flow Rate » Average Daily Influent Flow Rate using Recirculation Ratio

Credits

Created by Ishita Goyal

Meerut Institute of Engineering and Technology (MIET), Meerut

Ishita Goyal has created this Calculator and 500+ more calculators!

Verified by Chandana P Dev

NSS College of Engineering (NSSCE), Palakkad

Chandana P Dev has verified this Calculator and 1700+ more calculators!

< Average Daily Influent Flow Rate Calculators

Average Daily Influent Flow Rate given Theoretical Oxygen Requirement

LaTeX Go Average Daily Influent Flow Rate = (Theoretical Oxygen Requirement+(1.42*Net Waste Activated Sludge))*(BOD Conversion Factor/(8.34*(Influent Substrate Concentration-Effluent Substrate Concentration)))

Average Daily Influent Flow Rate given Net Waste Activated Sludge

LaTeX Go Average Daily Influent Flow Rate = Net Waste Activated Sludge/(8.34*Observed Cell Yield*(Influent Substrate Concentration-Effluent Substrate Concentration))

Average Daily Influent Flow Rate using Recirculation Ratio

LaTeX Go Average Daily Influent Flow Rate = Return Activated Sludge/Recirculation Ratio

Average Daily Influent Flow Rate using Recirculation Ratio Formula

LaTeX Go

Average Daily Influent Flow Rate = Return Activated Sludge/Recirculation Ratio
Q_a = RAS/α

What is recirculation ratio?

The Recirculation ratio is the ratio of RAS pumping rate to influent flow rate. The recirculation ratio can vary from 0.25 to 1.50 depending upon the type of activated sludge process used.

How to Calculate Average Daily Influent Flow Rate using Recirculation Ratio?

Average Daily Influent Flow Rate using Recirculation Ratio calculator uses Average Daily Influent Flow Rate = Return Activated Sludge/Recirculation Ratio to calculate the Average Daily Influent Flow Rate, The Average daily influent flow rate using recirculation ratio is the total amount of incoming sewage which enters the reactor daily. Average Daily Influent Flow Rate is denoted by Q_a symbol.

How to calculate Average Daily Influent Flow Rate using Recirculation Ratio using this online calculator? To use this online calculator for Average Daily Influent Flow Rate using Recirculation Ratio, enter Return Activated Sludge (RAS) & Recirculation Ratio (α) and hit the calculate button. Here is how the Average Daily Influent Flow Rate using Recirculation Ratio calculation can be explained with given input values -> 576000 = 0.000115740740740741/8.3.

FAQ

What is Average Daily Influent Flow Rate using Recirculation Ratio?

The Average daily influent flow rate using recirculation ratio is the total amount of incoming sewage which enters the reactor daily and is represented as Q_a = RAS/α or Average Daily Influent Flow Rate = Return Activated Sludge/Recirculation Ratio. 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 & Recirculation Ratio refers to the ratio of the RAS pumping rate to influent flow rate.

How to calculate Average Daily Influent Flow Rate using Recirculation Ratio?

The Average daily influent flow rate using recirculation ratio is the total amount of incoming sewage which enters the reactor daily is calculated using Average Daily Influent Flow Rate = Return Activated Sludge/Recirculation Ratio. To calculate Average Daily Influent Flow Rate using Recirculation Ratio, you need Return Activated Sludge (RAS) & Recirculation Ratio (α). With our tool, you need to enter the respective value for Return Activated Sludge & Recirculation Ratio 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 Average Daily Influent Flow Rate?

In this formula, Average Daily Influent Flow Rate uses Return Activated Sludge & Recirculation Ratio. We can use 2 other way(s) to calculate the same, which is/are as follows -

Average Daily Influent Flow Rate = Net Waste Activated Sludge/(8.34*Observed Cell Yield*(Influent Substrate Concentration-Effluent Substrate Concentration))
Average Daily Influent Flow Rate = (Theoretical Oxygen Requirement+(1.42*Net Waste Activated Sludge))*(BOD Conversion Factor/(8.34*(Influent Substrate Concentration-Effluent Substrate Concentration)))

Home

FREE PDFs

🔍 Search