Suraj Kumar
Birsa Institute of Technology (BIT), Sindri
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Ishita Goyal
Meerut Institute of Engineering and Technology (MIET), Meerut
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11 Other formulas that you can solve using the same Inputs

Drainage Area when Peak Discharge given in Field Application
Drainage Area=Peak Discharge/(1/3.6)*Coefficient of Runoff*Mean Intensity of Precipitation GO
Peak Discharge when Maximum Solids Entering the Clarifier is Given
Peak Discharge=(Maximum solids/(mlss*8.34))-Return activated sludge GO
Maximum Solids Entering the Clarifier
Maximum solids=(Peak Discharge+Return activated sludge)*mlss*8.34 GO
Influent Flow Rate when Return Activated Sludge Flow Rate is Given
average daily influent flow rate=(Return activated sludge/1.25) GO
Catchment Area when maximum Flood Discharge is known in Ryve’s formula
Catchment Area=(Peak Discharge/Ryves Coefficient)^1/0.66 GO
Catchment Area when maximum Flood Discharge is known in Dickens Formula
Catchment Area=(Peak Discharge/Dickens Constant)^1/0.75 GO
Design Surface Loading Rate when Surface Area of Circular Settling Tank is Given
Surface loading rate=(Peak Discharge/Surface Area) GO
Average Daily Load when Peak Discharge in Circular Settling Tanks is Given
Average daily load=(Peak Discharge/Peaking factor) GO
Peaking Factor when Peak Discharge in Circular Settling Tanks is Given
Peaking factor=(Peak Discharge/Average daily load) GO
Surface Area of Circular Settling Tank
Surface Area=(Peak Discharge/Surface loading rate) GO
Catchment Area when Peak Discharge is given in Jarvis formula
Catchment Area=(Peak Discharge/Coefficient)^2 GO

3 Other formulas that calculate the same Output

Mixed liquor suspended solids when wasting rate from return line is given
mlss=mean cell residence time*((WAS pumping rate from return line*sludge concentration in return line)+(effluent flow rate*solid concentration in effluent))/Volume of the reactor GO
MLSS when RAS Pumping Rate from Aeration Tank is Given
mlss=sludge concentration in return line*(Return activated sludge+WAS pumping rate from return line)/(average daily influent flow rate+Return activated sludge) GO
MLSS Using Wasting rate From Return Line when Concentration of Solid in Effluent is Low
mlss=mean cell residence time*WAS pumping rate from return line*sludge concentration in return line/Volume of the reactor GO

Mixed Liquor Suspended Solids in Aeration Tank when Maximum Solids is Given Formula

mlss=(Maximum solids/((Peak Discharge+Return activated sludge)*8.34))
X=(S/((Q<sub>p</sub>+Q<sub>r</sub>)*8.34))
More formulas
Peak Discharge in Circular Settling Tanks GO
Average Daily Load when Peak Discharge in Circular Settling Tanks is Given GO
Peaking Factor when Peak Discharge in Circular Settling Tanks is Given GO
Surface Area of Circular Settling Tank GO
Peak Discharge when Surface Area of Circular Settling Tank is Given GO
Design Surface Loading Rate when Surface Area of Circular Settling Tank is Given GO
Return Activated Sludge Flow Rate GO
Influent Flow Rate when Return Activated Sludge Flow Rate is Given GO
Maximum Solids Entering the Clarifier GO
Peak Discharge when Maximum Solids Entering the Clarifier is Given GO
Return Activated Sludge Flow Rate when Maximum Solids Entering the Clarifier is Given GO
Assumed Solid Loading Rate of Circular Settling Tanks GO
Maximum Solids when Solid Loading Rate is Given GO
Surface Area when Solid Loading Rate is Given GO
Actual Solid Loading Rate of Circular Settling Tanks GO
Solids Processed when Actual Solid Loading Rate is Given GO
Total Settling Tank Surface Area when Actual Solid Loading Rate is Given GO

What is mlss ?

Mixed liquor suspended solids is the concentration of suspended solids, in an aeration tank during the activated sludge process, which occurs during the treatment of waste water.

How to Calculate Mixed Liquor Suspended Solids in Aeration Tank when Maximum Solids is Given?

Mixed Liquor Suspended Solids in Aeration Tank when Maximum Solids is Given calculator uses mlss=(Maximum solids/((Peak Discharge+Return activated sludge)*8.34)) to calculate the mlss, The Mixed Liquor Suspended Solids in Aeration Tank when Maximum Solids is Given is defined as the concentration of suspended solids, in an aeration tank. mlss and is denoted by X symbol.

How to calculate Mixed Liquor Suspended Solids in Aeration Tank when Maximum Solids is Given using this online calculator? To use this online calculator for Mixed Liquor Suspended Solids in Aeration Tank when Maximum Solids is Given, enter Maximum solids (S), Peak Discharge (Qp) and Return activated sludge (Qr) and hit the calculate button. Here is how the Mixed Liquor Suspended Solids in Aeration Tank when Maximum Solids is Given calculation can be explained with given input values -> 0.000208 = (3.47222222222222E-05/((10+10)*8.34)).

FAQ

What is Mixed Liquor Suspended Solids in Aeration Tank when Maximum Solids is Given?
The Mixed Liquor Suspended Solids in Aeration Tank when Maximum Solids is Given is defined as the concentration of suspended solids, in an aeration tank and is represented as X=(S/((Qp+Qr)*8.34)) or mlss=(Maximum solids/((Peak Discharge+Return activated sludge)*8.34)). Maximum solids entering the clarifier in circular settling tank, Peak Discharge is the maximum volume flow rate passing a particular location during a storm event and Return activated sludge flow rate will vary with each installation and with different load factors.
How to calculate Mixed Liquor Suspended Solids in Aeration Tank when Maximum Solids is Given?
The Mixed Liquor Suspended Solids in Aeration Tank when Maximum Solids is Given is defined as the concentration of suspended solids, in an aeration tank is calculated using mlss=(Maximum solids/((Peak Discharge+Return activated sludge)*8.34)). To calculate Mixed Liquor Suspended Solids in Aeration Tank when Maximum Solids is Given, you need Maximum solids (S), Peak Discharge (Qp) and Return activated sludge (Qr). With our tool, you need to enter the respective value for Maximum solids, Peak Discharge and Return activated sludge and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.
How many ways are there to calculate mlss?
In this formula, mlss uses Maximum solids, Peak Discharge and Return activated sludge. We can use 3 other way(s) to calculate the same, which is/are as follows -
  • mlss=mean cell residence time*((WAS pumping rate from return line*sludge concentration in return line)+(effluent flow rate*solid concentration in effluent))/Volume of the reactor
  • mlss=mean cell residence time*WAS pumping rate from return line*sludge concentration in return line/Volume of the reactor
  • mlss=sludge concentration in return line*(Return activated sludge+WAS pumping rate from return line)/(average daily influent flow rate+Return activated sludge)
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