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Influent BOD given Oxygen Demand of Biomass Formula

GoInfluent BOD given Oxygen Required in Aeration Tank Formula

GoInfluent BOD given Ultimate BOD Formula

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Influent BOD is the total amount of BOD which is present in the incoming sewage. Check FAQs

Q i = Q b + (\frac{f \cdot (O 2 + (D O2 \cdot Q w \cdot X R))}{Q s})

Q_i - Influent BOD?Q_b - Effluent BOD given Oxygen Demand of Biomass?f - Ratio of BOD to Ultimate BOD?O₂ - Theoretical Oxygen Requirement?D^O2 - Oxygen Demand of Biomass?Q_w - Volume of Wasted Sludge per day?X^R - MLSS in Returned or Wasted Sludge?Q_s - Sewage Discharge?

Influent BOD given Oxygen Demand of Biomass Example

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Here is how the Influent BOD given Oxygen Demand of Biomass equation looks like with Values.

Here is how the Influent BOD given Oxygen Demand of Biomass equation looks like with Units.

Here is how the Influent BOD given Oxygen Demand of Biomass equation looks like.

15.2 = 7.1402 + (\frac{3 \cdot (2.5 + (2.02 \cdot 9.5 \cdot 1.4))}{10})

15.2mg/L = 7.1402mg/L + (\frac{3 \cdot (2.5mg/d + (2.02 \cdot 9.5m³/s \cdot 1.4mg/L))}{10m³/s})

15.2 = 7.1402 + (\frac{3 \cdot (2.5 + (2.02 \cdot 9.5 \cdot 1.4))}{10})

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Influent BOD given Oxygen Demand of Biomass Solution

Follow our step by step solution on how to calculate Influent BOD given Oxygen Demand of Biomass?

FIRST Step Consider the formula

Q i = Q b + (\frac{f \cdot (O 2 + (D O2 \cdot Q w \cdot X R))}{Q s})

Next Step Substitute values of Variables

∴

Q i = 7.1402mg/L + (\frac{3 \cdot (2.5mg/d + (2.02 \cdot 9.5m³/s \cdot 1.4mg/L))}{10m³/s})

Next Step Convert Units

∴

Q i = 0.0071kg/m³ + (\frac{3 \cdot (2.9E-11kg/s + (2.02 \cdot 9.5m³/s \cdot 0.0014kg/m³))}{10m³/s})

Next Step Prepare to Evaluate

∴

Q i = 0.0071 + (\frac{3 \cdot (2.9E-11 + (2.02 \cdot 9.5 \cdot 0.0014))}{10})

Next Step Evaluate

∴

Q i = 0.0152000000086806kg/m³

Next Step Convert to Output's Unit

∴

Q i = 15.2000000086806mg/L

LAST Step Rounding Answer

∴

Q i = 15.2mg/L

Influent BOD given Oxygen Demand of Biomass Formula Elements

Variables

Influent BOD

Influent BOD is the total amount of BOD which is present in the incoming sewage.

Symbol: Q_i

Measurement: DensityUnit: mg/L

Note: Value should be greater than 0.

Formulas to find Influent BOD

Effluent BOD given Oxygen Demand of Biomass

Effluent BOD given Oxygen Demand of Biomass is the amount of oxygen that is consumed by the microbial population in the effluent to decompose organic matter present.

Symbol: Q_b

Measurement: DensityUnit: mg/L

Note: Value should be greater than 0.

Formulas to find Effluent BOD given Oxygen Demand of Biomass

Ratio of BOD to Ultimate BOD

Ratio of BOD to Ultimate BOD is the ratio of 5 days bod to ultimate bod.

Symbol: f

Measurement: NAUnit: Unitless

Note: Value should be greater than 0.

Formulas to find Ratio of BOD to Ultimate BOD

Theoretical Oxygen Requirement

Theoretical Oxygen Requirement is the calculated amount of oxygen required to oxidize a compound to its final oxidation products.

Symbol: O₂

Measurement: Mass Flow RateUnit: mg/d

Note: Value should be greater than 0.

Formulas to find Theoretical Oxygen Requirement

Oxygen Demand of Biomass

Oxygen Demand of Biomass is the amount of oxygen required by the microorganisms to decompose organic matter present in biomass.

Symbol: D^O2

Measurement: NAUnit: Unitless

Note: Value should be greater than 0.

Formulas to find Oxygen Demand of Biomass

Volume of Wasted Sludge per day

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.

Symbol: Q_w

Measurement: Volumetric Flow RateUnit: m³/s

Note: Value should be greater than 0.

Formulas to find Volume of Wasted Sludge per day

MLSS in Returned or Wasted Sludge

MLSS in Returned or Wasted Sludge is the mixed liquor suspended solids in returned sludge in terms of mg per liter.

Symbol: X^R

Measurement: DensityUnit: mg/L

Note: Value should be greater than 0.

Formulas to find MLSS in Returned or Wasted Sludge

Sewage Discharge

Sewage Discharge is the flow rate of sewage when it is being discharged in the river.

Symbol: Q_s

Measurement: Volumetric Flow RateUnit: m³/s

Note: Value should be greater than 0.

Formulas to find Sewage Discharge

Other Formulas to find Influent BOD

Go Influent BOD given Oxygen Required in Aeration Tank

Q i = Q o + (\frac{f \cdot (O 2 + (1.42 \cdot Q w \cdot X R))}{Q s})

Go Influent BOD given Ultimate BOD

Q i = Q ub + (\frac{(\frac{BOD5}{BOD u}) \cdot (O 2 + (1.42 \cdot Q w \cdot X R))}{Q s})

How to Evaluate Influent BOD given Oxygen Demand of Biomass?

Influent BOD given Oxygen Demand of Biomass evaluator uses Influent BOD = Effluent BOD given Oxygen Demand of Biomass+((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 Discharge) to evaluate the Influent BOD, The Influent BOD given Oxygen Demand of Biomass formula is defined as the calculation of influent BOD when we have prior information of oxygen demand of biomass. Influent BOD is denoted by Q_i symbol.

How to evaluate Influent BOD given Oxygen Demand of Biomass using this online evaluator? To use this online evaluator for Influent BOD given Oxygen Demand of Biomass, enter Effluent BOD given Oxygen Demand of Biomass (Q_b), Ratio of BOD to Ultimate BOD (f), Theoretical Oxygen Requirement (O₂), Oxygen Demand of Biomass (D^O2), Volume of Wasted Sludge per day (Q_w), MLSS in Returned or Wasted Sludge (X^R) & Sewage Discharge (Q_s) and hit the calculate button.

FAQs on Influent BOD given Oxygen Demand of Biomass

What is the formula to find Influent BOD given Oxygen Demand of Biomass?

The formula of Influent BOD given Oxygen Demand of Biomass is expressed as Influent BOD = Effluent BOD given Oxygen Demand of Biomass+((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 Discharge). Here is an example- 13200 = 0.0071402+((3*(2.89351851851852E-11+(2.02*9.5*0.0014)))/10).

How to calculate Influent BOD given Oxygen Demand of Biomass?

With Effluent BOD given Oxygen Demand of Biomass (Q_b), Ratio of BOD to Ultimate BOD (f), Theoretical Oxygen Requirement (O₂), Oxygen Demand of Biomass (D^O2), Volume of Wasted Sludge per day (Q_w), MLSS in Returned or Wasted Sludge (X^R) & Sewage Discharge (Q_s) we can find Influent BOD given Oxygen Demand of Biomass using the formula - Influent BOD = Effluent BOD given Oxygen Demand of Biomass+((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 Discharge).

What are the other ways to Calculate Influent BOD?

Here are the different ways to Calculate Influent BOD-

Influent BOD=Effluent BOD given Oxygen Required+((Ratio of BOD to Ultimate BOD*(Theoretical Oxygen Requirement+(1.42*Volume of Wasted Sludge per day*MLSS in Returned or Wasted Sludge)))/Sewage Discharge)
Influent BOD=Effluent BOD given Ultimate BOD+(((5 Days BOD/Ultimate BOD)*(Theoretical Oxygen Requirement+(1.42*Volume of Wasted Sludge per day*MLSS in Returned or Wasted Sludge)))/Sewage Discharge)
Influent BOD=Effluent BOD given Oxygen Demand and Ultimate 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 Discharge)

Can the Influent BOD given Oxygen Demand of Biomass be negative?

No, the Influent BOD given Oxygen Demand of Biomass, measured in Density cannot be negative.

Which unit is used to measure Influent BOD given Oxygen Demand of Biomass?

Influent BOD given Oxygen Demand of Biomass is usually measured using the Milligram per Liter[mg/L] for Density. Kilogram per Cubic Meter[mg/L], Kilogram per Cubic Centimeter[mg/L], Gram per Cubic Meter[mg/L] are the few other units in which Influent BOD given Oxygen Demand of Biomass can be measured.

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Influent BOD given Oxygen Demand of Biomass Formula

​GoInfluent BOD given Oxygen Required in Aeration Tank Formula

​GoInfluent BOD given Ultimate BOD Formula

Influent BOD given Oxygen Demand of Biomass Example

Influent BOD given Oxygen Demand of Biomass Solution

Influent BOD given Oxygen Demand of Biomass Formula Elements

Other Formulas to find Influent BOD

How to Evaluate Influent BOD given Oxygen Demand of Biomass?

FAQs on Influent BOD given Oxygen Demand of Biomass

Variable Name

GoInfluent BOD given Oxygen Required in Aeration Tank Formula

GoInfluent BOD given Ultimate BOD Formula