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Mean Cell Residence Time is the average time that the sludge remains in the reactor. Check FAQs
θc=VXQw'Xr
θc - Mean Cell Residence Time?V - Reactor Volume?X - MLSS?Qw' - WAS Pumping Rate from Return Line?Xr - Sludge Concentration in Return Line?

Wasting Rate from Return Line when Concentration of Solid in Effluent is Low Example

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Here is how the Wasting Rate from Return Line when Concentration of Solid in Effluent is Low equation looks like with Values.

Here is how the Wasting Rate from Return Line when Concentration of Solid in Effluent is Low equation looks like with Units.

Here is how the Wasting Rate from Return Line when Concentration of Solid in Effluent is Low equation looks like.

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Wasting Rate from Return Line when Concentration of Solid in Effluent is Low Solution

Follow our step by step solution on how to calculate Wasting Rate from Return Line when Concentration of Solid in Effluent is Low?

FIRST Step Consider the formula
θc=VXQw'Xr
Next Step Substitute values of Variables
θc=10001200mg/L400m³/d200mg/L
Next Step Convert Units
θc=10001.2kg/m³0.0046m³/s0.2kg/m³
Next Step Prepare to Evaluate
θc=10001.20.00460.2
Next Step Evaluate
θc=1296000s
LAST Step Convert to Output's Unit
θc=15d

Wasting Rate from Return Line when Concentration of Solid in Effluent is Low Formula Elements

Variables
Mean Cell Residence Time
Mean Cell Residence Time is the average time that the sludge remains in the reactor.
Symbol: θc
Measurement: TimeUnit: d
Note: Value should be between 5 to 15.
Reactor Volume
Reactor Volume refers to the physical volume of a reactor used in chemical processes.
Symbol: V
Measurement: VolumeUnit:
Note: Value should be greater than 0.
MLSS
MLSS is the sum of volatile suspended solids (organics) and fixed suspended solids (inorganics).
Symbol: X
Measurement: DensityUnit: mg/L
Note: Value should be between 1000 to 6500.
WAS Pumping Rate from Return Line
WAS Pumping Rate from Return Line is the flow rate of waste sludge from the return line.
Symbol: Qw'
Measurement: Volumetric Flow RateUnit: m³/d
Note: Value should be greater than 0.
Sludge Concentration in Return Line
Sludge Concentration in Return Line refers to the concentration of suspended solids in the sludge that is being pumped back from the secondary clarifier to the aeration tank.
Symbol: Xr
Measurement: DensityUnit: mg/L
Note: Value should be greater than 0.

Other Formulas to find Mean Cell Residence Time

​Go Wasting Rate from Return Line
θc=VX(Qw'Xr)+(QeXe)

How to Evaluate Wasting Rate from Return Line when Concentration of Solid in Effluent is Low?

Wasting Rate from Return Line when Concentration of Solid in Effluent is Low evaluator uses Mean Cell Residence Time = (Reactor Volume*MLSS)/(WAS Pumping Rate from Return Line*Sludge Concentration in Return Line) to evaluate the Mean Cell Residence Time, The Wasting Rate from Return Line when Concentration of Solid in Effluent is Low formula is defined as the rate at which biomass (microorganisms) is removed from a bioreactor to maintain a desired level of biomass concentration. This process is crucial for the efficient functioning of the treatment plant. Mean Cell Residence Time is denoted by θc symbol.

How to evaluate Wasting Rate from Return Line when Concentration of Solid in Effluent is Low using this online evaluator? To use this online evaluator for Wasting Rate from Return Line when Concentration of Solid in Effluent is Low, enter Reactor Volume (V), MLSS (X), WAS Pumping Rate from Return Line (Qw') & Sludge Concentration in Return Line (Xr) and hit the calculate button.

FAQs on Wasting Rate from Return Line when Concentration of Solid in Effluent is Low

What is the formula to find Wasting Rate from Return Line when Concentration of Solid in Effluent is Low?
The formula of Wasting Rate from Return Line when Concentration of Solid in Effluent is Low is expressed as Mean Cell Residence Time = (Reactor Volume*MLSS)/(WAS Pumping Rate from Return Line*Sludge Concentration in Return Line). Here is an example- 0.000174 = (1000*1.2)/(0.00462962962962963*0.2).
How to calculate Wasting Rate from Return Line when Concentration of Solid in Effluent is Low?
With Reactor Volume (V), MLSS (X), WAS Pumping Rate from Return Line (Qw') & Sludge Concentration in Return Line (Xr) we can find Wasting Rate from Return Line when Concentration of Solid in Effluent is Low using the formula - Mean Cell Residence Time = (Reactor Volume*MLSS)/(WAS Pumping Rate from Return Line*Sludge Concentration in Return Line).
What are the other ways to Calculate Mean Cell Residence Time?
Here are the different ways to Calculate Mean Cell Residence Time-
  • Mean Cell Residence Time=(Reactor Volume*MLSS)/((WAS Pumping Rate from Return Line*Sludge Concentration in Return Line)+(Effluent Flow Rate*Solid Concentration in Effluent))OpenImg
Can the Wasting Rate from Return Line when Concentration of Solid in Effluent is Low be negative?
No, the Wasting Rate from Return Line when Concentration of Solid in Effluent is Low, measured in Time cannot be negative.
Which unit is used to measure Wasting Rate from Return Line when Concentration of Solid in Effluent is Low?
Wasting Rate from Return Line when Concentration of Solid in Effluent is Low is usually measured using the Day[d] for Time. Second[d], Millisecond[d], Microsecond[d] are the few other units in which Wasting Rate from Return Line when Concentration of Solid in Effluent is Low can be measured.
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