Average Daily Influent Flow Rate given Theoretical Oxygen Requirement Solution

STEP 0: Pre-Calculation Summary
Formula Used
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)))
Qa = (O2+(1.42*Px))*(f/(8.34*(So-S)))
This formula uses 6 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.
Theoretical Oxygen Requirement - (Measured in Kilogram per Second) - Theoretical Oxygen Requirement is the calculated amount of oxygen required to oxidize a compound to its final oxidation products.
Net Waste Activated Sludge - (Measured in Kilogram per Second) - Net Waste Activated Sludge is the amount of waste product that can be treated using the activated sludge process.
BOD Conversion Factor - BOD Conversion Factor is the value that is multiplied in the 5 days BOD to get the value of ultimate BOD.
Influent Substrate Concentration - (Measured in Kilogram per Cubic Meter) - Influent Substrate Concentration refers to the concentration of organic matter or nutrients in the raw wastewater entering a treatment plant.
Effluent Substrate Concentration - (Measured in Kilogram per Cubic Meter) - Effluent Substrate Concentration refers to the concentration of organic matter or nutrients present in the treated wastewater (effluent) that is discharged from a wastewater treatment plant.
STEP 1: Convert Input(s) to Base Unit
Theoretical Oxygen Requirement: 2.5 Milligram per Day --> 2.89351851851852E-11 Kilogram per Second (Check conversion ​here)
Net Waste Activated Sludge: 20 Milligram per Day --> 2.31481481481481E-10 Kilogram per Second (Check conversion ​here)
BOD Conversion Factor: 0.68 --> No Conversion Required
Influent Substrate Concentration: 25 Milligram per Liter --> 0.025 Kilogram per Cubic Meter (Check conversion ​here)
Effluent Substrate Concentration: 15 Milligram per Liter --> 0.015 Kilogram per Cubic Meter (Check conversion ​here)
STEP 2: Evaluate Formula
Substituting Input Values in Formula
Qa = (O2+(1.42*Px))*(f/(8.34*(So-S))) --> (2.89351851851852E-11+(1.42*2.31481481481481E-10))*(0.68/(8.34*(0.025-0.015)))
Evaluating ... ...
Qa = 2.916000532907E-09
STEP 3: Convert Result to Output's Unit
2.916000532907E-09 Cubic Meter per Second -->0.000251942446043165 Cubic Meter per Day (Check conversion ​here)
FINAL ANSWER
0.000251942446043165 0.000252 Cubic Meter per Day <-- Average Daily Influent Flow Rate
(Calculation completed in 00.020 seconds)

Credits

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Created by Ishita Goyal
Meerut Institute of Engineering and Technology (MIET), Meerut
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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 given Theoretical Oxygen Requirement Formula

​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)))
Qa = (O2+(1.42*Px))*(f/(8.34*(So-S)))

What is theoretical oxygen requirement?

The Theoretical oxygen requirement for the removal of the carbonaceous organic matter is the calculated amount of oxygen required to oxidize a compound to its final oxidation products.

How to Calculate Average Daily Influent Flow Rate given Theoretical Oxygen Requirement?

Average Daily Influent Flow Rate given Theoretical Oxygen Requirement calculator uses 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))) to calculate the Average Daily Influent Flow Rate, The Average Daily Influent Flow Rate given Theoretical Oxygen Requirement is the total quantity of incoming sewage that enters the activated sludge process. Average Daily Influent Flow Rate is denoted by Qa symbol.

How to calculate Average Daily Influent Flow Rate given Theoretical Oxygen Requirement using this online calculator? To use this online calculator for Average Daily Influent Flow Rate given Theoretical Oxygen Requirement, enter Theoretical Oxygen Requirement (O2), Net Waste Activated Sludge (Px), BOD Conversion Factor (f), Influent Substrate Concentration (So) & Effluent Substrate Concentration (S) and hit the calculate button. Here is how the Average Daily Influent Flow Rate given Theoretical Oxygen Requirement calculation can be explained with given input values -> 21.76783 = (2.89351851851852E-11+(1.42*2.31481481481481E-10))*(0.68/(8.34*(0.025-0.015))).

FAQ

What is Average Daily Influent Flow Rate given Theoretical Oxygen Requirement?
The Average Daily Influent Flow Rate given Theoretical Oxygen Requirement is the total quantity of incoming sewage that enters the activated sludge process and is represented as Qa = (O2+(1.42*Px))*(f/(8.34*(So-S))) or 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))). Theoretical Oxygen Requirement is the calculated amount of oxygen required to oxidize a compound to its final oxidation products, Net Waste Activated Sludge is the amount of waste product that can be treated using the activated sludge process, BOD Conversion Factor is the value that is multiplied in the 5 days BOD to get the value of ultimate BOD, Influent Substrate Concentration refers to the concentration of organic matter or nutrients in the raw wastewater entering a treatment plant & Effluent Substrate Concentration refers to the concentration of organic matter or nutrients present in the treated wastewater (effluent) that is discharged from a wastewater treatment plant.
How to calculate Average Daily Influent Flow Rate given Theoretical Oxygen Requirement?
The Average Daily Influent Flow Rate given Theoretical Oxygen Requirement is the total quantity of incoming sewage that enters the activated sludge process is calculated using 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))). To calculate Average Daily Influent Flow Rate given Theoretical Oxygen Requirement, you need Theoretical Oxygen Requirement (O2), Net Waste Activated Sludge (Px), BOD Conversion Factor (f), Influent Substrate Concentration (So) & Effluent Substrate Concentration (S). With our tool, you need to enter the respective value for Theoretical Oxygen Requirement, Net Waste Activated Sludge, BOD Conversion Factor, Influent Substrate Concentration & Effluent Substrate Concentration 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 Theoretical Oxygen Requirement, Net Waste Activated Sludge, BOD Conversion Factor, Influent Substrate Concentration & Effluent Substrate Concentration. 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 = Return Activated Sludge/Recirculation Ratio
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