Influent BOD given Mass of Wasted Activated Sludge Formula

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Influent BOD is the total amount of BOD which is present in the incoming sewage. Check FAQs
Qi=(Mws+(KeVX')YQs)+Qo
Qi - Influent BOD?Mws - Mass of Wasted Activated Sludge?Ke - Endogenous Respiration Rate Constant?V - Volume of Tank?X' - Mixed Liquor Suspended Solids?Y - Maximum Yield Coefficient?Qs - Sewage Discharge?Qo - Effluent BOD?

Influent BOD given Mass of Wasted Activated Sludge Example

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With units
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Here is how the Influent BOD given Mass of Wasted Activated Sludge equation looks like with Values.

Here is how the Influent BOD given Mass of Wasted Activated Sludge equation looks like with Units.

Here is how the Influent BOD given Mass of Wasted Activated Sludge equation looks like.

11.1999Edit=(53626Edit+(2.99Edit9Edit1200Edit)0.5Edit10Edit)+0.4Edit
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Influent BOD given Mass of Wasted Activated Sludge Solution

Follow our step by step solution on how to calculate Influent BOD given Mass of Wasted Activated Sludge?

FIRST Step Consider the formula
Qi=(Mws+(KeVX')YQs)+Qo
Next Step Substitute values of Variables
Qi=(53626mg+(2.99d⁻¹91200mg/L)0.510m³/s)+0.4mg/L
Next Step Convert Units
Qi=(0.0536kg+(3.5E-5s⁻¹91.2kg/m³)0.510m³/s)+0.0004kg/m³
Next Step Prepare to Evaluate
Qi=(0.0536+(3.5E-591.2)0.510)+0.0004
Next Step Evaluate
Qi=0.01119995kg/m³
Next Step Convert to Output's Unit
Qi=11.19995mg/L
LAST Step Rounding Answer
Qi=11.1999mg/L

Influent BOD given Mass of Wasted Activated Sludge Formula Elements

Variables
Influent BOD
Influent BOD is the total amount of BOD which is present in the incoming sewage.
Symbol: Qi
Measurement: DensityUnit: mg/L
Note: Value should be greater than 0.
Mass of Wasted Activated Sludge
Mass of Wasted Activated Sludge is the total mass of sludge that is removed from the wastewater treatment process, specifically from the activated sludge system.
Symbol: Mws
Measurement: WeightUnit: mg
Note: Value should be greater than 0.
Endogenous Respiration Rate Constant
Endogenous Respiration Rate Constant is used for designing a complete-mix activated-sludge system.
Symbol: Ke
Measurement: First Order Reaction Rate ConstantUnit: d⁻¹
Note: Value should be greater than 0.
Volume of Tank
Volume of Tank is defined as the capacity of flocculation and mixing tank.
Symbol: V
Measurement: VolumeUnit:
Note: Value should be greater than 0.
Mixed Liquor Suspended Solids
Mixed Liquor Suspended Solids is the concentration of suspended solids in the mixed liquor of an aeration tank during the activated sludge process.
Symbol: X'
Measurement: DensityUnit: mg/L
Note: Value should be between 1000 to 6500.
Maximum Yield Coefficient
Maximum Yield Coefficient is the maximum mg of cells produced per mg organic matter removed.
Symbol: Y
Measurement: NAUnit: Unitless
Note: Value should be between 0.4 to 0.8.
Sewage Discharge
Sewage Discharge is the flow rate of sewage when it is being discharged in the river.
Symbol: Qs
Measurement: Volumetric Flow RateUnit: m³/s
Note: Value should be greater than 0.
Effluent BOD
Effluent BOD is the amount of BOD present in the outing sewage.
Symbol: Qo
Measurement: DensityUnit: mg/L
Note: Value should be greater than 0.

Other formulas in Influent and Effluent BOD category

​Go Influent BOD given Specific Substrate Utilization Rate Per Day
Qi'=(UVX'Qs)+Qo
​Go Effluent BOD given Mass of Wasted Activated Sludge
Qo=Qi-(Mws+(KeVX')YQs)

How to Evaluate Influent BOD given Mass of Wasted Activated Sludge?

Influent BOD given Mass of Wasted Activated Sludge evaluator uses Influent BOD = ((Mass of Wasted Activated Sludge+(Endogenous Respiration Rate Constant*Volume of Tank*Mixed Liquor Suspended Solids))/(Maximum Yield Coefficient*Sewage Discharge))+Effluent BOD to evaluate the Influent BOD, The Influent BOD given Mass of Wasted Activated Sludge formula is defined as the calculation of influent BOD when we have prior information of mass of wasted activated sludge. Influent BOD is denoted by Qi symbol.

How to evaluate Influent BOD given Mass of Wasted Activated Sludge using this online evaluator? To use this online evaluator for Influent BOD given Mass of Wasted Activated Sludge, enter Mass of Wasted Activated Sludge (Mws), Endogenous Respiration Rate Constant (Ke), Volume of Tank (V), Mixed Liquor Suspended Solids (X'), Maximum Yield Coefficient (Y), Sewage Discharge (Qs) & Effluent BOD (Qo) and hit the calculate button.

FAQs on Influent BOD given Mass of Wasted Activated Sludge

What is the formula to find Influent BOD given Mass of Wasted Activated Sludge?
The formula of Influent BOD given Mass of Wasted Activated Sludge is expressed as Influent BOD = ((Mass of Wasted Activated Sludge+(Endogenous Respiration Rate Constant*Volume of Tank*Mixed Liquor Suspended Solids))/(Maximum Yield Coefficient*Sewage Discharge))+Effluent BOD. Here is an example- 11199.95 = ((0.053626+(3.46064814814815E-05*9*1.2))/(0.5*10))+0.0004.
How to calculate Influent BOD given Mass of Wasted Activated Sludge?
With Mass of Wasted Activated Sludge (Mws), Endogenous Respiration Rate Constant (Ke), Volume of Tank (V), Mixed Liquor Suspended Solids (X'), Maximum Yield Coefficient (Y), Sewage Discharge (Qs) & Effluent BOD (Qo) we can find Influent BOD given Mass of Wasted Activated Sludge using the formula - Influent BOD = ((Mass of Wasted Activated Sludge+(Endogenous Respiration Rate Constant*Volume of Tank*Mixed Liquor Suspended Solids))/(Maximum Yield Coefficient*Sewage Discharge))+Effluent BOD.
Can the Influent BOD given Mass of Wasted Activated Sludge be negative?
No, the Influent BOD given Mass of Wasted Activated Sludge, measured in Density cannot be negative.
Which unit is used to measure Influent BOD given Mass of Wasted Activated Sludge?
Influent BOD given Mass of Wasted Activated Sludge 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 Mass of Wasted Activated Sludge can be measured.
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