Effluent BOD given Oxygen Required in Aeration Tank Solution

STEP 0: Pre-Calculation Summary
Formula Used
Effluent BOD given Oxygen Required = Influent BOD-((Ratio of BOD to Ultimate BOD*(Theoretical Oxygen Requirement+(1.42*Volume of Wasted Sludge per day*MLSS in Returned or Wasted Sludge)))/Sewage Flowrate)
Qo = Qi-((f*(O2+(1.42*Qw*XR)))/SF)
This formula uses 7 Variables
Variables Used
Effluent BOD given Oxygen Required - (Measured in Kilogram per Cubic Meter) - Effluent BOD given Oxygen Required in Aeration Tank is the amount of biodegradable organic matter in the treated wastewater.
Influent BOD - (Measured in Kilogram per Cubic Meter) - Influent BOD is the total amount of BOD which is present in the incoming sewage.
Ratio of BOD to Ultimate BOD - Ratio of BOD to Ultimate BOD is the ratio of 5 days bod to ultimate bod.
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.
Volume of Wasted Sludge per day - (Measured in Cubic Meter per Second) - Volume of Wasted Sludge per day is the amount of sludge that is removed or wasted from a wastewater treatment process on a daily basis.
MLSS in Returned or Wasted Sludge - (Measured in Kilogram per Cubic Meter) - MLSS in Returned or Wasted Sludge is the mixed liquor suspended solids in returned sludge in terms of mg per liter.
Sewage Flowrate - (Measured in Cubic Meter per Second) - Sewage Flowrate is the flow rate of sewage when it is being discharged in the river.
STEP 1: Convert Input(s) to Base Unit
Influent BOD: 13.2 Milligram per Liter --> 0.0132 Kilogram per Cubic Meter (Check conversion ​here)
Ratio of BOD to Ultimate BOD: 3 --> No Conversion Required
Theoretical Oxygen Requirement: 2.5 Milligram per Day --> 2.89351851851852E-11 Kilogram per Second (Check conversion ​here)
Volume of Wasted Sludge per day: 9.5 Cubic Meter per Second --> 9.5 Cubic Meter per Second No Conversion Required
MLSS in Returned or Wasted Sludge: 1.4 Milligram per Liter --> 0.0014 Kilogram per Cubic Meter (Check conversion ​here)
Sewage Flowrate: 15 Cubic Meter per Second --> 15 Cubic Meter per Second No Conversion Required
STEP 2: Evaluate Formula
Substituting Input Values in Formula
Qo = Qi-((f*(O2+(1.42*Qw*XR)))/SF) --> 0.0132-((3*(2.89351851851852E-11+(1.42*9.5*0.0014)))/15)
Evaluating ... ...
Qo = 0.00942279999421296
STEP 3: Convert Result to Output's Unit
0.00942279999421296 Kilogram per Cubic Meter -->9.42279999421296 Milligram per Liter (Check conversion ​here)
FINAL ANSWER
9.42279999421296 9.4228 Milligram per Liter <-- Effluent BOD given Oxygen Required
(Calculation completed in 00.020 seconds)

Credits

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Created by Suraj Kumar
Birsa Institute of Technology (BIT), Sindri
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Verified by Ishita Goyal
Meerut Institute of Engineering and Technology (MIET), Meerut
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Effluent BOD Calculators

Effluent BOD given Oxygen Demand and Ultimate BOD Both
​ Go Effluent BOD given Oxygen Demand and Ultimate BOD = Influent BOD-(((5 Days BOD/Ultimate BOD)*(Theoretical Oxygen Requirement+(Oxygen Demand of Biomass*Volume of Wasted Sludge per day*MLSS in Returned or Wasted Sludge)))/Sewage Flowrate)
Effluent BOD given Oxygen Demand of Biomass
​ Go Effluent BOD given Oxygen Demand of Biomass = Influent BOD-((Ratio of BOD to Ultimate BOD*(Theoretical Oxygen Requirement+(Oxygen Demand of Biomass*Volume of Wasted Sludge per day*MLSS in Returned or Wasted Sludge)))/Sewage Flowrate)
Effluent BOD given Ultimate BOD
​ Go Effluent BOD given Ultimate BOD = Influent BOD-(((5 Days BOD/Ultimate BOD)*(Theoretical Oxygen Requirement+(1.42*Volume of Wasted Sludge per day*MLSS in Returned or Wasted Sludge)))/Sewage Flowrate)
Effluent BOD given Oxygen Required in Aeration Tank
​ Go Effluent BOD given Oxygen Required = Influent BOD-((Ratio of BOD to Ultimate BOD*(Theoretical Oxygen Requirement+(1.42*Volume of Wasted Sludge per day*MLSS in Returned or Wasted Sludge)))/Sewage Flowrate)

Effluent BOD given Oxygen Required in Aeration Tank Formula

Effluent BOD given Oxygen Required = Influent BOD-((Ratio of BOD to Ultimate BOD*(Theoretical Oxygen Requirement+(1.42*Volume of Wasted Sludge per day*MLSS in Returned or Wasted Sludge)))/Sewage Flowrate)
Qo = Qi-((f*(O2+(1.42*Qw*XR)))/SF)

What is BOD?

Biochemical oxygen demand is the amount of dissolved oxygen needed by aerobic biological organisms to break down organic material present in a given water sample at certain temperature over a specific time period.

How to Calculate Effluent BOD given Oxygen Required in Aeration Tank?

Effluent BOD given Oxygen Required in Aeration Tank calculator uses Effluent BOD given Oxygen Required = Influent BOD-((Ratio of BOD to Ultimate BOD*(Theoretical Oxygen Requirement+(1.42*Volume of Wasted Sludge per day*MLSS in Returned or Wasted Sludge)))/Sewage Flowrate) to calculate the Effluent BOD given Oxygen Required, The Effluent BOD given Oxygen Required in Aeration Tank formula is defined as the concentration of biodegradable organic matter in the treated wastewater that is discharged from an aeration tank in a wastewater treatment plant. The BOD value indicates the amount of oxygen required by microorganisms to decompose this organic matter. When given the oxygen required in an aeration tank, the effluent BOD can be determined as it reflects the efficiency of the biological treatment process. Effluent BOD given Oxygen Required is denoted by Qo symbol.

How to calculate Effluent BOD given Oxygen Required in Aeration Tank using this online calculator? To use this online calculator for Effluent BOD given Oxygen Required in Aeration Tank, enter Influent BOD (Qi), Ratio of BOD to Ultimate BOD (f), Theoretical Oxygen Requirement (O2), Volume of Wasted Sludge per day (Qw), MLSS in Returned or Wasted Sludge (XR) & Sewage Flowrate (SF) and hit the calculate button. Here is how the Effluent BOD given Oxygen Required in Aeration Tank calculation can be explained with given input values -> 9422.8 = 0.0132-((3*(2.89351851851852E-11+(1.42*9.5*0.0014)))/15).

FAQ

What is Effluent BOD given Oxygen Required in Aeration Tank?
The Effluent BOD given Oxygen Required in Aeration Tank formula is defined as the concentration of biodegradable organic matter in the treated wastewater that is discharged from an aeration tank in a wastewater treatment plant. The BOD value indicates the amount of oxygen required by microorganisms to decompose this organic matter. When given the oxygen required in an aeration tank, the effluent BOD can be determined as it reflects the efficiency of the biological treatment process and is represented as Qo = Qi-((f*(O2+(1.42*Qw*XR)))/SF) or Effluent BOD given Oxygen Required = Influent BOD-((Ratio of BOD to Ultimate BOD*(Theoretical Oxygen Requirement+(1.42*Volume of Wasted Sludge per day*MLSS in Returned or Wasted Sludge)))/Sewage Flowrate). Influent BOD is the total amount of BOD which is present in the incoming sewage, Ratio of BOD to Ultimate BOD is the ratio of 5 days bod to ultimate bod, Theoretical Oxygen Requirement is the calculated amount of oxygen required to oxidize a compound to its final oxidation products, Volume of Wasted Sludge per day is the amount of sludge that is removed or wasted from a wastewater treatment process on a daily basis, MLSS in Returned or Wasted Sludge is the mixed liquor suspended solids in returned sludge in terms of mg per liter & Sewage Flowrate is the flow rate of sewage when it is being discharged in the river.
How to calculate Effluent BOD given Oxygen Required in Aeration Tank?
The Effluent BOD given Oxygen Required in Aeration Tank formula is defined as the concentration of biodegradable organic matter in the treated wastewater that is discharged from an aeration tank in a wastewater treatment plant. The BOD value indicates the amount of oxygen required by microorganisms to decompose this organic matter. When given the oxygen required in an aeration tank, the effluent BOD can be determined as it reflects the efficiency of the biological treatment process is calculated using Effluent BOD given Oxygen Required = Influent BOD-((Ratio of BOD to Ultimate BOD*(Theoretical Oxygen Requirement+(1.42*Volume of Wasted Sludge per day*MLSS in Returned or Wasted Sludge)))/Sewage Flowrate). To calculate Effluent BOD given Oxygen Required in Aeration Tank, you need Influent BOD (Qi), Ratio of BOD to Ultimate BOD (f), Theoretical Oxygen Requirement (O2), Volume of Wasted Sludge per day (Qw), MLSS in Returned or Wasted Sludge (XR) & Sewage Flowrate (SF). With our tool, you need to enter the respective value for Influent BOD, Ratio of BOD to Ultimate BOD, Theoretical Oxygen Requirement, Volume of Wasted Sludge per day, MLSS in Returned or Wasted Sludge & Sewage Flowrate 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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