Influent Substrate Concentration given Theoretical Oxygen Requirement Solution

STEP 0: Pre-Calculation Summary
Formula Used
Influent Substrate Concentration = (Theoretical Oxygen Requirement+(1.42*Net Waste Activated Sludge))*(BOD Conversion Factor/(8.34*Average Daily Influent Flow Rate))+Effluent Substrate Concentration
So = (O2+(1.42*Px))*(f/(8.34*Qa))+S
This formula uses 6 Variables
Variables Used
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.
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.
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.
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
Average Daily Influent Flow Rate: 1.2 Cubic Meter per Day --> 1.38888888888889E-05 Cubic Meter per Second (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
So = (O2+(1.42*Px))*(f/(8.34*Qa))+S --> (2.89351851851852E-11+(1.42*2.31481481481481E-10))*(0.68/(8.34*1.38888888888889E-05))+0.015
Evaluating ... ...
So = 0.0150020995203837
STEP 3: Convert Result to Output's Unit
0.0150020995203837 Kilogram per Cubic Meter -->15.0020995203837 Milligram per Liter (Check conversion ​here)
FINAL ANSWER
15.0020995203837 15.0021 Milligram per Liter <-- Influent Substrate Concentration
(Calculation completed in 00.004 seconds)

Credits

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Created by Ishita Goyal
Meerut Institute of Engineering and Technology (MIET), Meerut
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NSS College of Engineering (NSSCE), Palakkad
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Influent Substrate Concentration Calculators

Influent Substrate Concentration given Theoretical Oxygen Requirement
​ LaTeX ​ Go Influent Substrate Concentration = (Theoretical Oxygen Requirement+(1.42*Net Waste Activated Sludge))*(BOD Conversion Factor/(8.34*Average Daily Influent Flow Rate))+Effluent Substrate Concentration
Influent Substrate Concentration given Net Waste Activated Sludge
​ LaTeX ​ Go Influent Substrate Concentration = (Net Waste Activated Sludge/(8.34*Observed Cell Yield*Average Daily Influent Flow Rate))+Effluent Substrate Concentration
Influent Substrate Concentration given Organic Loading
​ LaTeX ​ Go Influent Substrate Concentration = Organic Loading*Reactor Volume/Influent Average Flow Rate
Influent Substrate Concentration for Organic Loading using Hydraulic Retention Time
​ LaTeX ​ Go Influent Substrate Concentration = Organic Loading*Hydraulic Retention Time in Seconds

Influent Substrate Concentration given Theoretical Oxygen Requirement Formula

​LaTeX ​Go
Influent Substrate Concentration = (Theoretical Oxygen Requirement+(1.42*Net Waste Activated Sludge))*(BOD Conversion Factor/(8.34*Average Daily Influent Flow Rate))+Effluent Substrate Concentration
So = (O2+(1.42*Px))*(f/(8.34*Qa))+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 Influent Substrate Concentration given Theoretical Oxygen Requirement?

Influent Substrate Concentration given Theoretical Oxygen Requirement calculator uses Influent Substrate Concentration = (Theoretical Oxygen Requirement+(1.42*Net Waste Activated Sludge))*(BOD Conversion Factor/(8.34*Average Daily Influent Flow Rate))+Effluent Substrate Concentration to calculate the Influent Substrate Concentration, The Influent substrate concentration given theoretical oxygen requirement is the total BOD which is present in the incoming sewage. Influent Substrate Concentration is denoted by So symbol.

How to calculate Influent Substrate Concentration given Theoretical Oxygen Requirement using this online calculator? To use this online calculator for Influent Substrate Concentration given Theoretical Oxygen Requirement, enter Theoretical Oxygen Requirement (O2), Net Waste Activated Sludge (Px), BOD Conversion Factor (f), Average Daily Influent Flow Rate (Qa) & Effluent Substrate Concentration (S) and hit the calculate button. Here is how the Influent Substrate Concentration given Theoretical Oxygen Requirement calculation can be explained with given input values -> 15002.1 = (2.89351851851852E-11+(1.42*2.31481481481481E-10))*(0.68/(8.34*1.38888888888889E-05))+0.015.

FAQ

What is Influent Substrate Concentration given Theoretical Oxygen Requirement?
The Influent substrate concentration given theoretical oxygen requirement is the total BOD which is present in the incoming sewage and is represented as So = (O2+(1.42*Px))*(f/(8.34*Qa))+S or Influent Substrate Concentration = (Theoretical Oxygen Requirement+(1.42*Net Waste Activated Sludge))*(BOD Conversion Factor/(8.34*Average Daily Influent Flow Rate))+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, Average Daily Influent Flow Rate is the total discharge that comes in the reactor & 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 Influent Substrate Concentration given Theoretical Oxygen Requirement?
The Influent substrate concentration given theoretical oxygen requirement is the total BOD which is present in the incoming sewage is calculated using Influent Substrate Concentration = (Theoretical Oxygen Requirement+(1.42*Net Waste Activated Sludge))*(BOD Conversion Factor/(8.34*Average Daily Influent Flow Rate))+Effluent Substrate Concentration. To calculate Influent Substrate Concentration given Theoretical Oxygen Requirement, you need Theoretical Oxygen Requirement (O2), Net Waste Activated Sludge (Px), BOD Conversion Factor (f), Average Daily Influent Flow Rate (Qa) & 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, Average Daily Influent Flow Rate & 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 Influent Substrate Concentration?
In this formula, Influent Substrate Concentration uses Theoretical Oxygen Requirement, Net Waste Activated Sludge, BOD Conversion Factor, Average Daily Influent Flow Rate & Effluent Substrate Concentration. We can use 3 other way(s) to calculate the same, which is/are as follows -
  • Influent Substrate Concentration = (Net Waste Activated Sludge/(8.34*Observed Cell Yield*Average Daily Influent Flow Rate))+Effluent Substrate Concentration
  • Influent Substrate Concentration = Organic Loading*Reactor Volume/Influent Average Flow Rate
  • Influent Substrate Concentration = Organic Loading*Hydraulic Retention Time in Seconds
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