HCF of three numbers

Oxygen Required in Aeration Tank given Oxygen Demand and Ultimate BOD Calculator

Engineering Chemistry Financial Health More >>

↳

Civil Chemical Engineering Electrical Electronics More >>

⤿

Environmental Engineering Bridge and Suspension Cable Coastal and Ocean Engineering Columns More >>

⤿

Treatment of Sewage Conveyance of Water Design of a Chlorination System for Wastewater Disinfection Design of a Circular Settling Tank More >>

⤿

Oxygen Requirement of the Aeration Tanks Constant Velocity Horizontal Flow Grit Channels Design of Conical Humus Tank Design of Continuous Flow Type of Sedimentation Tank More >>

⤿

Oxygen Required in Aeration Tank Important Formulas of Oxygen Requirement of the Aeration Tank BOD to Ultimate BOD BOD5 More >>

✖Sewage Discharge is the flow rate of sewage when it is being discharged in the river.ⓘ Sewage Discharge [Q_s]			+10% -10%
✖Influent BOD is the total amount of BOD which is present in the incoming sewage.ⓘ Influent BOD [Q_i]			+10% -10%
✖Effluent BOD is the amount of BOD present in the outing sewage.ⓘ Effluent BOD [Q]			+10% -10%
✖5 Days BOD is an indicator of how much oxygen is utilized by a natural water sample in five days at 20 degrees C.ⓘ 5 Days BOD [BOD5]			+10% -10%
✖Ultimate BOD is the amount of oxygen required to decompose all of the organic material after infinite time.ⓘ Ultimate BOD [BOD^u]			+10% -10%
✖Oxygen Demand of Biomass is the amount of oxygen required by the microorganisms to decompose organic matter present in biomass.ⓘ Oxygen Demand of Biomass [D^O2]			+10% -10%
✖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.ⓘ Volume of Wasted Sludge per day [Q_w]			+10% -10%
✖MLSS in Returned or Wasted Sludge is the mixed liquor suspended solids in returned sludge in terms of mg per liter.ⓘ MLSS in Returned or Wasted Sludge [X^R]			+10% -10%

✖Oxygen Required is the amount of oxygen needed to sustain biological processes in an aeration tank, which is a critical component of wastewater treatment systems.ⓘ Oxygen Required in Aeration Tank given Oxygen Demand and Ultimate BOD [O_r]

⎘ Copy

👎

Formula

LaTeX

Reset

👍

Download Environmental Engineering Formula PDF PDF Image

Oxygen Required in Aeration Tank given Oxygen Demand and Ultimate BOD Solution

STEP 0: Pre-Calculation Summary

Formula Used

Oxygen Required = ((Sewage Discharge*(Influent BOD-Effluent BOD))/(5 Days BOD/Ultimate BOD))-(Oxygen Demand of Biomass*Volume of Wasted Sludge per day*MLSS in Returned or Wasted Sludge)
O_r = ((Q_s*(Q_i-Q))/(BOD5/BOD^u))-(D^O2*Q_w*X^R)
This formula uses 9 Variables

Variables Used

Oxygen Required - (Measured in Milligram per Day) - Oxygen Required is the amount of oxygen needed to sustain biological processes in an aeration tank, which is a critical component of wastewater treatment systems.
Sewage Discharge - (Measured in Cubic Meter per Second) - Sewage Discharge is the flow rate of sewage when it is being discharged in the river.
Influent BOD - (Measured in Kilogram per Cubic Meter) - Influent BOD is the total amount of BOD which is present in the incoming sewage.
Effluent BOD - (Measured in Kilogram per Cubic Meter) - Effluent BOD is the amount of BOD present in the outing sewage.
5 Days BOD - (Measured in Kilogram per Cubic Meter) - 5 Days BOD is an indicator of how much oxygen is utilized by a natural water sample in five days at 20 degrees C.
Ultimate BOD - (Measured in Kilogram per Cubic Meter) - Ultimate BOD is the amount of oxygen required to decompose all of the organic material after infinite time.
Oxygen Demand of Biomass - Oxygen Demand of Biomass is the amount of oxygen required by the microorganisms to decompose organic matter present in biomass.
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.

STEP 1: Convert Input(s) to Base Unit

Sewage Discharge: 10 Cubic Meter per Second --> 10 Cubic Meter per Second No Conversion Required
Influent BOD: 13.2 Milligram per Liter --> 0.0132 Kilogram per Cubic Meter (Check conversion here)
Effluent BOD: 0.4 Milligram per Liter --> 0.0004 Kilogram per Cubic Meter (Check conversion here)
5 Days BOD: 1.36 Milligram per Liter --> 0.00136 Kilogram per Cubic Meter (Check conversion here)
Ultimate BOD: 2 Milligram per Liter --> 0.002 Kilogram per Cubic Meter (Check conversion here)
Oxygen Demand of Biomass: 2.02 --> No Conversion Required
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)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

O_r = ((Q_s*(Q_i-Q))/(BOD5/BOD^u))-(D^O2*Q_w*X^R) --> ((10*(0.0132-0.0004))/(0.00136/0.002))-(2.02*9.5*0.0014)

Evaluating ... ...

O_r = 0.161369294117647

STEP 3: Convert Result to Output's Unit

1.86770016339869E-12 Kilogram per Second -->0.161369294117647 Milligram per Day (Check conversion here)

FINAL ANSWER

0.161369294117647 ≈ 0.161369 Milligram per Day <-- Oxygen Required

(Calculation completed in 00.004 seconds)

You are here -

Home » Engineering » Civil » Environmental Engineering » Treatment of Sewage » Oxygen Requirement of the Aeration Tanks » Oxygen Required in Aeration Tank » Oxygen Required in Aeration Tank given Oxygen Demand and Ultimate BOD

Credits

Created by Suraj Kumar

Birsa Institute of Technology (BIT), Sindri

Suraj Kumar has created this Calculator and 2100+ more calculators!

Verified by Ishita Goyal

Meerut Institute of Engineering and Technology (MIET), Meerut

Ishita Goyal has verified this Calculator and 2600+ more calculators!

< Oxygen Required in Aeration Tank Calculators

Oxygen Required in Aeration Tank given Oxygen Demand and Ultimate BOD

LaTeX Go Oxygen Required = ((Sewage Discharge*(Influent BOD-Effluent BOD))/(5 Days BOD/Ultimate BOD))-(Oxygen Demand of Biomass*Volume of Wasted Sludge per day*MLSS in Returned or Wasted Sludge)

Oxygen Required in Aeration Tank given Oxygen Demand of Biomass

LaTeX Go Oxygen Required in Aeration Tank = ((Sewage Discharge*(Influent BOD-Effluent BOD))/Ratio of BOD to Ultimate BOD)-(Oxygen Demand of Biomass*Volume of Wasted Sludge per day*MLSS in Returned or Wasted Sludge)

Oxygen Required in Aeration Tank given Ultimate BOD

LaTeX Go Oxygen Required = ((Sewage Discharge*(Influent BOD-Effluent BOD))/(5 Days BOD/Ultimate BOD))-(1.42*Volume of Wasted Sludge per day*MLSS in Returned or Wasted Sludge)

Oxygen Required in Aeration Tank

LaTeX Go Oxygen Required in Aeration Tank = ((Sewage Discharge*(Influent BOD-Effluent BOD))/Ratio of BOD to Ultimate BOD)-(1.42*Volume of Wasted Sludge per day*MLSS in Returned or Wasted Sludge)

< Important Formulas of Oxygen Requirement of the Aeration Tank Calculators

BOD5 given Oxygen Required in Aeration Tank

LaTeX Go BOD5 given Oxygen Required in Aeration Tank = Ultimate BOD*(Sewage Discharge*(Influent BOD-Effluent BOD))/(Theoretical Oxygen Requirement+(1.42*Volume of Wasted Sludge per day*MLSS in Returned or Wasted Sludge))

BOD5 given Ratio of BOD to Ultimate BOD

LaTeX Go BOD5 given Ratio of BOD to Ultimate BOD = Ratio of BOD to Ultimate BOD*Ultimate BOD

Ratio of BOD to Ultimate BOD

LaTeX Go Ratio of BOD to Ultimate BOD = BOD of 5 days at 20° C/Ultimate BOD

BOD5 when Ratio of BOD to Ultimate BOD is 0.68

LaTeX Go 5 Days BOD = Ultimate BOD*0.68

Oxygen Required in Aeration Tank given Oxygen Demand and Ultimate BOD Formula

LaTeX Go

What is Aeration?

Aeration in an activated sludge process is based on pumping air into a tank, which promotes the microbial growth in the wastewater. The microbes feed on the organic material, forming flocks which can easily settle out.

How to Calculate Oxygen Required in Aeration Tank given Oxygen Demand and Ultimate BOD?

Oxygen Required in Aeration Tank given Oxygen Demand and Ultimate BOD calculator uses Oxygen Required = ((Sewage Discharge*(Influent BOD-Effluent BOD))/(5 Days BOD/Ultimate BOD))-(Oxygen Demand of Biomass*Volume of Wasted Sludge per day*MLSS in Returned or Wasted Sludge) to calculate the Oxygen Required, Oxygen Required in Aeration Tank given Oxygen Demand and Ultimate BOD formula is defined as the amount of oxygen required to remove organic matter in wastewater, taking into account the oxygen demand, ultimate BOD, and other factors that affect the aeration process in wastewater treatment. Oxygen Required is denoted by O_r symbol.

How to calculate Oxygen Required in Aeration Tank given Oxygen Demand and Ultimate BOD using this online calculator? To use this online calculator for Oxygen Required in Aeration Tank given Oxygen Demand and Ultimate BOD, enter Sewage Discharge (Q_s), Influent BOD (Q_i), Effluent BOD (Q), 5 Days BOD (BOD5), Ultimate BOD (BOD^u), Oxygen Demand of Biomass (D^O2), Volume of Wasted Sludge per day (Q_w) & MLSS in Returned or Wasted Sludge (X^R) and hit the calculate button. Here is how the Oxygen Required in Aeration Tank given Oxygen Demand and Ultimate BOD calculation can be explained with given input values -> 1.4E+10 = ((10*(0.0132-0.0004))/(0.00136/0.002))-(2.02*9.5*0.0014).

FAQ

What is Oxygen Required in Aeration Tank given Oxygen Demand and Ultimate BOD?

Oxygen Required in Aeration Tank given Oxygen Demand and Ultimate BOD formula is defined as the amount of oxygen required to remove organic matter in wastewater, taking into account the oxygen demand, ultimate BOD, and other factors that affect the aeration process in wastewater treatment and is represented as O_r = ((Q_s*(Q_i-Q))/(BOD5/BOD^u))-(D^O2*Q_w*X^R) or Oxygen Required = ((Sewage Discharge*(Influent BOD-Effluent BOD))/(5 Days BOD/Ultimate BOD))-(Oxygen Demand of Biomass*Volume of Wasted Sludge per day*MLSS in Returned or Wasted Sludge). Sewage Discharge is the flow rate of sewage when it is being discharged in the river, Influent BOD is the total amount of BOD which is present in the incoming sewage, Effluent BOD is the amount of BOD present in the outing sewage, 5 Days BOD is an indicator of how much oxygen is utilized by a natural water sample in five days at 20 degrees C, Ultimate BOD is the amount of oxygen required to decompose all of the organic material after infinite time, Oxygen Demand of Biomass is the amount of oxygen required by the microorganisms to decompose organic matter present in biomass, 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.

How to calculate Oxygen Required in Aeration Tank given Oxygen Demand and Ultimate BOD?

Oxygen Required in Aeration Tank given Oxygen Demand and Ultimate BOD formula is defined as the amount of oxygen required to remove organic matter in wastewater, taking into account the oxygen demand, ultimate BOD, and other factors that affect the aeration process in wastewater treatment is calculated using Oxygen Required = ((Sewage Discharge*(Influent BOD-Effluent BOD))/(5 Days BOD/Ultimate BOD))-(Oxygen Demand of Biomass*Volume of Wasted Sludge per day*MLSS in Returned or Wasted Sludge). To calculate Oxygen Required in Aeration Tank given Oxygen Demand and Ultimate BOD, you need Sewage Discharge (Q_s), Influent BOD (Q_i), Effluent BOD (Q), 5 Days BOD (BOD5), Ultimate BOD (BOD^u), Oxygen Demand of Biomass (D^O2), Volume of Wasted Sludge per day (Q_w) & MLSS in Returned or Wasted Sludge (X^R). With our tool, you need to enter the respective value for Sewage Discharge, Influent BOD, Effluent BOD, 5 Days BOD, Ultimate BOD, Oxygen Demand of Biomass, Volume of Wasted Sludge per day & MLSS in Returned or Wasted Sludge 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 Oxygen Required?

In this formula, Oxygen Required uses Sewage Discharge, Influent BOD, Effluent BOD, 5 Days BOD, Ultimate BOD, Oxygen Demand of Biomass, Volume of Wasted Sludge per day & MLSS in Returned or Wasted Sludge. We can use 1 other way(s) to calculate the same, which is/are as follows -

Oxygen Required = ((Sewage Discharge*(Influent BOD-Effluent BOD))/(5 Days BOD/Ultimate BOD))-(1.42*Volume of Wasted Sludge per day*MLSS in Returned or Wasted Sludge)

Home

FREE PDFs

🔍 Search