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Net Waste Activated Sludge is the amount of waste product that can be treated using the activated sludge process. Check FAQs
Px=Yobs⋅Qa⋅(So-S)⋅8.34
Px - Net Waste Activated Sludge?Yobs - Observed Cell Yield?Qa - Average Daily Influent Flow Rate?So - Influent Substrate Concentration?S - Effluent Substrate Concentration?

Net Waste Activated Sludge Example

With values
With units
Only example

Here is how the Net Waste Activated Sludge equation looks like with Values.

Here is how the Net Waste Activated Sludge equation looks like with Units.

Here is how the Net Waste Activated Sludge equation looks like.

80064Edit=0.8Edit⋅1.2Edit⋅(25Edit-15Edit)⋅8.34
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Net Waste Activated Sludge Solution

Follow our step by step solution on how to calculate Net Waste Activated Sludge?

FIRST Step Consider the formula
Px=Yobs⋅Qa⋅(So-S)⋅8.34
Next Step Substitute values of Variables
∴ Px=0.8⋅1.2m³/d⋅(25mg/L-15mg/L)⋅8.34
Next Step Convert Units
∴ Px=0.8⋅1.4E-5m³/s⋅(0.025kg/m³-0.015kg/m³)⋅8.34
Next Step Prepare to Evaluate
∴ Px=0.8⋅1.4E-5⋅(0.025-0.015)⋅8.34
Next Step Evaluate
∴Px=9.26666666666668E-07kg/s
Next Step Convert to Output's Unit
∴Px=80064.0000000001mg/d
LAST Step Rounding Answer
∴Px=80064mg/d

Net Waste Activated Sludge Formula Elements

Variables
Net Waste Activated Sludge
Net Waste Activated Sludge is the amount of waste product that can be treated using the activated sludge process.
Symbol: Px
Measurement: Mass Flow RateUnit: mg/d
Note: Value should be greater than 0.
Formulas to find Net Waste Activated SludgeOpen Variable
Observed Cell Yield
Observed Cell Yield refers to the observed mg of cells produced per mg organic matter removed.
Symbol: Yobs
Measurement: NAUnit: Unitless
Note: Value should be greater than 0.
Formulas to find Observed Cell YieldOpen Variable
Average Daily Influent Flow Rate
Average Daily Influent Flow Rate is the total discharge that comes in the reactor.
Symbol: Qa
Measurement: Volumetric Flow RateUnit: m³/d
Note: Value should be greater than 0.
Formulas to find Average Daily Influent Flow RateOpen Variable
Influent Substrate Concentration
Influent Substrate Concentration refers to the concentration of organic matter or nutrients in the raw wastewater entering a treatment plant.
Symbol: So
Measurement: DensityUnit: mg/L
Note: Value should be greater than 0.
Formulas to find Influent Substrate ConcentrationOpen Variable
Effluent Substrate Concentration
Effluent Substrate Concentration refers to the concentration of organic matter or nutrients present in the treated wastewater (effluent) that is discharged from a wastewater treatment plant.
Symbol: S
Measurement: DensityUnit: mg/L
Note: Value should be greater than 0.
Formulas to find Effluent Substrate ConcentrationOpen Variable

Other Formulas to find Net Waste Activated Sludge

​Go Net Waste Activated Sludge given Theoretical Oxygen Requirement
Px=(Qa⋅8.34⋅(So-S)f⋅1.42)-(O21.42)

How to Evaluate Net Waste Activated Sludge?

Net Waste Activated Sludge evaluator uses Net Waste Activated Sludge = Observed Cell Yield*Average Daily Influent Flow Rate*(Influent Substrate Concentration-Effluent Substrate Concentration)*8.34 to evaluate the Net Waste Activated Sludge, The Net waste activated sludge is the concentrated waste product that can be treated using the activated sludge process. Net Waste Activated Sludge is denoted by Px symbol.

How to evaluate Net Waste Activated Sludge using this online evaluator? To use this online evaluator for Net Waste Activated Sludge, enter Observed Cell Yield (Yobs), Average Daily Influent Flow Rate (Qa), Influent Substrate Concentration (So) & Effluent Substrate Concentration (S) and hit the calculate button.

FAQs on Net Waste Activated Sludge

What is the formula to find Net Waste Activated Sludge?
The formula of Net Waste Activated Sludge is expressed as Net Waste Activated Sludge = Observed Cell Yield*Average Daily Influent Flow Rate*(Influent Substrate Concentration-Effluent Substrate Concentration)*8.34. Here is an example- 6.9E+15 = 0.8*1.38888888888889E-05*(0.025-0.015)*8.34.
How to calculate Net Waste Activated Sludge?
With Observed Cell Yield (Yobs), Average Daily Influent Flow Rate (Qa), Influent Substrate Concentration (So) & Effluent Substrate Concentration (S) we can find Net Waste Activated Sludge using the formula - Net Waste Activated Sludge = Observed Cell Yield*Average Daily Influent Flow Rate*(Influent Substrate Concentration-Effluent Substrate Concentration)*8.34.
What are the other ways to Calculate Net Waste Activated Sludge?
Here are the different ways to Calculate Net Waste Activated Sludge-
  • Net Waste Activated Sludge=((Average Daily Influent Flow Rate*8.34*(Influent Substrate Concentration-Effluent Substrate Concentration))/(BOD Conversion Factor*1.42))-(Theoretical Oxygen Requirement/1.42)OpenImg
Can the Net Waste Activated Sludge be negative?
No, the Net Waste Activated Sludge, measured in Mass Flow Rate cannot be negative.
Which unit is used to measure Net Waste Activated Sludge?
Net Waste Activated Sludge is usually measured using the Milligram per Day[mg/d] for Mass Flow Rate. Kilogram per Second[mg/d], Gram per Second[mg/d], Gram per Hour[mg/d] are the few other units in which Net Waste Activated Sludge can be measured.
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