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Average Daily Influent Flow Rate is the total discharge that comes in the reactor. Check FAQs
Qa=RASα
Qa - Average Daily Influent Flow Rate?RAS - Return Activated Sludge?α - Recirculation Ratio?

Average Daily Influent Flow Rate using Recirculation Ratio Example

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With units
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Here is how the Average Daily Influent Flow Rate using Recirculation Ratio equation looks like with Values.

Here is how the Average Daily Influent Flow Rate using Recirculation Ratio equation looks like with Units.

Here is how the Average Daily Influent Flow Rate using Recirculation Ratio equation looks like.

1.2048Edit=10Edit8.3Edit
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Average Daily Influent Flow Rate using Recirculation Ratio Solution

Follow our step by step solution on how to calculate Average Daily Influent Flow Rate using Recirculation Ratio?

FIRST Step Consider the formula
Qa=RASα
Next Step Substitute values of Variables
∴ Qa=10m³/d8.3
Next Step Convert Units
∴ Qa=0.0001m³/s8.3
Next Step Prepare to Evaluate
∴ Qa=0.00018.3
Next Step Evaluate
∴Qa=1.39446675591254E-05m³/s
Next Step Convert to Output's Unit
∴Qa=1.20481927710844m³/d
LAST Step Rounding Answer
∴Qa=1.2048m³/d

Average Daily Influent Flow Rate using Recirculation Ratio Formula Elements

Variables
Average Daily Influent Flow Rate
Average Daily Influent Flow Rate is the total discharge that comes in the reactor.
Symbol: Qa
Measurement: Volumetric Flow RateUnit: m³/d
Note: Value should be greater than 0.
Formulas to find Average Daily Influent Flow RateOpen Variable
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 SludgeOpen Variable
Recirculation Ratio
Recirculation Ratio refers to the ratio of the RAS pumping rate to influent flow rate.
Symbol: α
Measurement: NAUnit: Unitless
Note: Value should be greater than 0.
Formulas to find Recirculation RatioOpen Variable

Other Formulas to find Average Daily Influent Flow Rate

​Go Average Daily Influent Flow Rate given Net Waste Activated Sludge
Qa=Px8.34⋅Yobs⋅(So-S)
​Go Average Daily Influent Flow Rate given Theoretical Oxygen Requirement
Qa=(O2+(1.42⋅Px))⋅(f8.34⋅(So-S))

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

Average Daily Influent Flow Rate using Recirculation Ratio evaluator uses Average Daily Influent Flow Rate = Return Activated Sludge/Recirculation Ratio to evaluate 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 Qa symbol.

How to evaluate Average Daily Influent Flow Rate using Recirculation Ratio using this online evaluator? To use this online evaluator for Average Daily Influent Flow Rate using Recirculation Ratio, enter Return Activated Sludge (RAS) & Recirculation Ratio (α) and hit the calculate button.

FAQs on Average Daily Influent Flow Rate using Recirculation Ratio

What is the formula to find Average Daily Influent Flow Rate using Recirculation Ratio?
The formula of Average Daily Influent Flow Rate using Recirculation Ratio is expressed as Average Daily Influent Flow Rate = Return Activated Sludge/Recirculation Ratio. Here is an example- 576000 = 0.000115740740740741/8.3.
How to calculate Average Daily Influent Flow Rate using Recirculation Ratio?
With Return Activated Sludge (RAS) & Recirculation Ratio (α) we can find Average Daily Influent Flow Rate using Recirculation Ratio using the formula - Average Daily Influent Flow Rate = Return Activated Sludge/Recirculation Ratio.
What are the other ways to Calculate Average Daily Influent Flow Rate?
Here are the different ways to Calculate Average Daily Influent Flow Rate-
  • Average Daily Influent Flow Rate=Net Waste Activated Sludge/(8.34*Observed Cell Yield*(Influent Substrate Concentration-Effluent Substrate Concentration))OpenImg
  • 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)))OpenImg
Can the Average Daily Influent Flow Rate using Recirculation Ratio be negative?
No, the Average Daily Influent Flow Rate using Recirculation Ratio, measured in Volumetric Flow Rate cannot be negative.
Which unit is used to measure Average Daily Influent Flow Rate using Recirculation Ratio?
Average Daily Influent Flow Rate using Recirculation Ratio 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 Average Daily Influent Flow Rate using Recirculation Ratio can be measured.
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