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Critical Oxygen Deficit is referred as the condition where the deoxygenation rate exceeds the reoxygenation rate. Check FAQs
Dc=KDLt10-KDtcKR
Dc - Critical Oxygen Deficit?KD - Deoxygenation Constant?Lt - Oxygen Equivalent?tc - Critical Time?KR - Reoxygenation Coefficient?

Critical Oxygen Deficit Example

With values
With units
Only example

Here is how the Critical Oxygen Deficit equation looks like with Values.

Here is how the Critical Oxygen Deficit equation looks like with Units.

Here is how the Critical Oxygen Deficit equation looks like.

0.0002Edit=0.23Edit0.21Edit10-0.23Edit0.5Edit0.22Edit
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Critical Oxygen Deficit Solution

Follow our step by step solution on how to calculate Critical Oxygen Deficit?

FIRST Step Consider the formula
Dc=KDLt10-KDtcKR
Next Step Substitute values of Variables
Dc=0.23d⁻¹0.21mg/L10-0.23d⁻¹0.5d0.22d⁻¹
Next Step Convert Units
Dc=2.7E-6s⁻¹0.0002kg/m³10-2.7E-6s⁻¹43200s2.5E-6s⁻¹
Next Step Prepare to Evaluate
Dc=2.7E-60.000210-2.7E-6432002.5E-6
Next Step Evaluate
Dc=0.000168470726982617
LAST Step Rounding Answer
Dc=0.0002

Critical Oxygen Deficit Formula Elements

Variables
Critical Oxygen Deficit
Critical Oxygen Deficit is referred as the condition where the deoxygenation rate exceeds the reoxygenation rate.
Symbol: Dc
Measurement: NAUnit: Unitless
Note: Value should be greater than 0.
Deoxygenation Constant
Deoxygenation Constant is referred as the value obtained after decomposing of oxygen in sewage.
Symbol: KD
Measurement: First Order Reaction Rate ConstantUnit: d⁻¹
Note: Value should be greater than 0.
Oxygen Equivalent
The Oxygen Equivalent is referred as the oxidizable organic matter present in sewage.
Symbol: Lt
Measurement: DensityUnit: mg/L
Note: Value should be greater than 0.
Critical Time
Critical Time refers to the minimum dissolved oxygen concentration occurs, found by differentiating the dissolved oxygen equation with respect to time.
Symbol: tc
Measurement: TimeUnit: d
Note: Value should be greater than 0.
Reoxygenation Coefficient
Reoxygenation Coefficient is referred as the parameter used in water quality modeling to describe the rate at which oxygen is transferred from the atmosphere to the water body.
Symbol: KR
Measurement: First Order Reaction Rate ConstantUnit: d⁻¹
Note: Value should be greater than 0.

Other Formulas to find Critical Oxygen Deficit

​Go Critical Oxygen Deficit given Self Purification Constant
Dc=Lt10-KDtcf
​Go Critical Oxygen Deficit in First Stage Equation
Dc=(Ltf)f1-(f-1)Do

How to Evaluate Critical Oxygen Deficit?

Critical Oxygen Deficit evaluator uses Critical Oxygen Deficit = Deoxygenation Constant*Oxygen Equivalent*(10^(-Deoxygenation Constant*Critical Time))/Reoxygenation Coefficient to evaluate the Critical Oxygen Deficit, The Critical Oxygen Deficit formula is defined as the condition where the deoxygenation rate exceeds the reoxygenation rate. Critical Oxygen Deficit is denoted by Dc symbol.

How to evaluate Critical Oxygen Deficit using this online evaluator? To use this online evaluator for Critical Oxygen Deficit, enter Deoxygenation Constant (KD), Oxygen Equivalent (Lt), Critical Time (tc) & Reoxygenation Coefficient (KR) and hit the calculate button.

FAQs on Critical Oxygen Deficit

What is the formula to find Critical Oxygen Deficit?
The formula of Critical Oxygen Deficit is expressed as Critical Oxygen Deficit = Deoxygenation Constant*Oxygen Equivalent*(10^(-Deoxygenation Constant*Critical Time))/Reoxygenation Coefficient. Here is an example- 0.000185 = 2.66203703703704E-06*0.00021*(10^(-2.66203703703704E-06*43200))/2.5462962962963E-06.
How to calculate Critical Oxygen Deficit?
With Deoxygenation Constant (KD), Oxygen Equivalent (Lt), Critical Time (tc) & Reoxygenation Coefficient (KR) we can find Critical Oxygen Deficit using the formula - Critical Oxygen Deficit = Deoxygenation Constant*Oxygen Equivalent*(10^(-Deoxygenation Constant*Critical Time))/Reoxygenation Coefficient.
What are the other ways to Calculate Critical Oxygen Deficit?
Here are the different ways to Calculate Critical Oxygen Deficit-
  • Critical Oxygen Deficit=Oxygen Equivalent*(10^(-Deoxygenation Constant*Critical Time))/Self-Purification ConstantOpenImg
  • Critical Oxygen Deficit=((Oxygen Equivalent/Self-Purification Constant)^Self-Purification Constant)/(1-(Self-Purification Constant-1)*Initial Oxygen Deficit)OpenImg
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