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MLSS Returned given Oxygen Required in Aeration Tank Calculator

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MLSS Returned Important Formulas of Oxygen Requirement of the Aeration Tank BOD to Ultimate BOD BOD5 More >>

✖Sewage Discharge is the flow rate of sewage when it is being discharged in the river.ⓘ Sewage Discharge [Q_s]			+10% -10%
✖Influent BOD is the total amount of BOD which is present in the incoming sewage.ⓘ Influent BOD [Q_i]			+10% -10%
✖Effluent BOD given Oxygen Required in Aeration Tank is the amount of biodegradable organic matter in the treated wastewater.ⓘ Effluent BOD given Oxygen Required [Q_o]			+10% -10%
✖Ratio of BOD to Ultimate BOD is the ratio of 5 days bod to ultimate bod.ⓘ Ratio of BOD to Ultimate BOD [f]			+10% -10%
✖Theoretical Oxygen Requirement is the calculated amount of oxygen required to oxidize a compound to its final oxidation products.ⓘ Theoretical Oxygen Requirement [O₂]			+10% -10%
✖Volume of Wasted Sludge per day is the amount of sludge that is removed or wasted from a wastewater treatment process on a daily basis.ⓘ Volume of Wasted Sludge per day [Q_w]			+10% -10%

✖MLSS in Returned or Wasted Sludge is the mixed liquor suspended solids in returned sludge in terms of mg per liter.ⓘ MLSS Returned given Oxygen Required in Aeration Tank [X^R]

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MLSS Returned given Oxygen Required in Aeration Tank Solution

STEP 0: Pre-Calculation Summary

Formula Used

MLSS in Returned or Wasted Sludge = (((Sewage Discharge*(Influent BOD-Effluent BOD given Oxygen Required))/Ratio of BOD to Ultimate BOD)-Theoretical Oxygen Requirement)/(1.42*Volume of Wasted Sludge per day)
X^R = (((Q_s*(Q_i-Q_o))/f)-O₂)/(1.42*Q_w)
This formula uses 7 Variables

Variables Used

MLSS in Returned or Wasted Sludge - (Measured in Kilogram per Cubic Meter) - MLSS in Returned or Wasted Sludge is the mixed liquor suspended solids in returned sludge in terms of mg per liter.
Sewage Discharge - (Measured in Cubic Meter per Second) - Sewage Discharge is the flow rate of sewage when it is being discharged in the river.
Influent BOD - (Measured in Kilogram per Cubic Meter) - Influent BOD is the total amount of BOD which is present in the incoming sewage.
Effluent BOD given Oxygen Required - (Measured in Kilogram per Cubic Meter) - Effluent BOD given Oxygen Required in Aeration Tank is the amount of biodegradable organic matter in the treated wastewater.
Ratio of BOD to Ultimate BOD - Ratio of BOD to Ultimate BOD is the ratio of 5 days bod to ultimate bod.
Theoretical Oxygen Requirement - (Measured in Kilogram per Second) - Theoretical Oxygen Requirement is the calculated amount of oxygen required to oxidize a compound to its final oxidation products.
Volume of Wasted Sludge per day - (Measured in Cubic Meter per Second) - Volume of Wasted Sludge per day is the amount of sludge that is removed or wasted from a wastewater treatment process on a daily basis.

STEP 1: Convert Input(s) to Base Unit

Sewage Discharge: 10 Cubic Meter per Second --> 10 Cubic Meter per Second No Conversion Required
Influent BOD: 13.2 Milligram per Liter --> 0.0132 Kilogram per Cubic Meter (Check conversion here)
Effluent BOD given Oxygen Required: 9.44 Milligram per Liter --> 0.00944 Kilogram per Cubic Meter (Check conversion here)
Ratio of BOD to Ultimate BOD: 3 --> No Conversion Required
Theoretical Oxygen Requirement: 2.5 Milligram per Day --> 2.89351851851852E-11 Kilogram per Second (Check conversion here)
Volume of Wasted Sludge per day: 9.5 Cubic Meter per Second --> 9.5 Cubic Meter per Second No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

X^R = (((Q_s*(Q_i-Q_o))/f)-O₂)/(1.42*Q_w) --> (((10*(0.0132-0.00944))/3)-2.89351851851852E-11)/(1.42*9.5)

Evaluating ... ...

X^R = 0.000929083269414244

STEP 3: Convert Result to Output's Unit

0.000929083269414244 Kilogram per Cubic Meter -->0.929083269414244 Milligram per Liter (Check conversion here)

FINAL ANSWER

0.929083269414244 ≈ 0.929083 Milligram per Liter <-- MLSS in Returned or Wasted Sludge

(Calculation completed in 00.020 seconds)

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< MLSS Returned Calculators

MLSS Returned given Oxygen Demand and Ultimate BOD Both

LaTeX Go MLSS in Returned or Wasted Sludge = (((Sewage Discharge*(Influent BOD-Effluent BOD given Oxygen Demand and Ultimate BOD))/(5 Days BOD/Ultimate BOD))-Theoretical Oxygen Requirement)/(Oxygen Demand of Biomass*Volume of Wasted Sludge per day)

MLSS Returned given Oxygen Demand of Biomass

LaTeX Go MLSS in Returned or Wasted Sludge = (((Sewage Discharge*(Influent BOD-Effluent BOD given Oxygen Demand of Biomass))/Ratio of BOD to Ultimate BOD)-Theoretical Oxygen Requirement)/(Oxygen Demand of Biomass*Volume of Wasted Sludge per day)

MLSS Returned given Ultimate BOD

LaTeX Go MLSS in Returned or Wasted Sludge = (((Sewage Discharge*(Influent BOD-Effluent BOD given Ultimate BOD))/(5 Days BOD/Ultimate BOD))-Theoretical Oxygen Requirement)/(1.42*Volume of Wasted Sludge per day)

MLSS Returned given Oxygen Required in Aeration Tank

LaTeX Go MLSS in Returned or Wasted Sludge = (((Sewage Discharge*(Influent BOD-Effluent BOD given Oxygen Required))/Ratio of BOD to Ultimate BOD)-Theoretical Oxygen Requirement)/(1.42*Volume of Wasted Sludge per day)

< Important Formulas of Oxygen Requirement of the Aeration Tank Calculators

BOD5 given Oxygen Required in Aeration Tank

LaTeX Go BOD5 given Oxygen Required in Aeration Tank = Ultimate BOD*(Sewage Discharge*(Influent BOD-Effluent BOD))/(Theoretical Oxygen Requirement+(1.42*Volume of Wasted Sludge per day*MLSS in Returned or Wasted Sludge))

BOD5 given Ratio of BOD to Ultimate BOD

LaTeX Go BOD5 given Ratio of BOD to Ultimate BOD = Ratio of BOD to Ultimate BOD*Ultimate BOD

Ratio of BOD to Ultimate BOD

LaTeX Go Ratio of BOD to Ultimate BOD = BOD of 5 days at 20° C/Ultimate BOD

BOD5 when Ratio of BOD to Ultimate BOD is 0.68

LaTeX Go 5 Days BOD = Ultimate BOD*0.68

MLSS Returned given Oxygen Required in Aeration Tank Formula

LaTeX Go

What is MLSS?

Mixed liquor suspended solids (MLSS) 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 MLSS Returned given Oxygen Required in Aeration Tank?

MLSS Returned given Oxygen Required in Aeration Tank calculator uses MLSS in Returned or Wasted Sludge = (((Sewage Discharge*(Influent BOD-Effluent BOD given Oxygen Required))/Ratio of BOD to Ultimate BOD)-Theoretical Oxygen Requirement)/(1.42*Volume of Wasted Sludge per day) to calculate the MLSS in Returned or Wasted Sludge, MLSS Returned given Oxygen Required in Aeration Tank formula is defined as a measure of the mass of suspended solids in a mixture of wastewater and activated sludge, which is essential in determining the oxygen requirement for the aeration tank in wastewater treatment processes. MLSS in Returned or Wasted Sludge is denoted by X^R symbol.

How to calculate MLSS Returned given Oxygen Required in Aeration Tank using this online calculator? To use this online calculator for MLSS Returned given Oxygen Required in Aeration Tank, enter Sewage Discharge (Q_s), Influent BOD (Q_i), Effluent BOD given Oxygen Required (Q_o), Ratio of BOD to Ultimate BOD (f), Theoretical Oxygen Requirement (O₂) & Volume of Wasted Sludge per day (Q_w) and hit the calculate button. Here is how the MLSS Returned given Oxygen Required in Aeration Tank calculation can be explained with given input values -> 1400.049 = (((10*(0.0132-0.00944))/3)-2.89351851851852E-11)/(1.42*9.5).

FAQ

What is MLSS Returned given Oxygen Required in Aeration Tank?

MLSS Returned given Oxygen Required in Aeration Tank formula is defined as a measure of the mass of suspended solids in a mixture of wastewater and activated sludge, which is essential in determining the oxygen requirement for the aeration tank in wastewater treatment processes and is represented as X^R = (((Q_s*(Q_i-Q_o))/f)-O₂)/(1.42*Q_w) or MLSS in Returned or Wasted Sludge = (((Sewage Discharge*(Influent BOD-Effluent BOD given Oxygen Required))/Ratio of BOD to Ultimate BOD)-Theoretical Oxygen Requirement)/(1.42*Volume of Wasted Sludge per day). Sewage Discharge is the flow rate of sewage when it is being discharged in the river, Influent BOD is the total amount of BOD which is present in the incoming sewage, Effluent BOD given Oxygen Required in Aeration Tank is the amount of biodegradable organic matter in the treated wastewater, Ratio of BOD to Ultimate BOD is the ratio of 5 days bod to ultimate bod, Theoretical Oxygen Requirement is the calculated amount of oxygen required to oxidize a compound to its final oxidation products & Volume of Wasted Sludge per day is the amount of sludge that is removed or wasted from a wastewater treatment process on a daily basis.

How to calculate MLSS Returned given Oxygen Required in Aeration Tank?

MLSS Returned given Oxygen Required in Aeration Tank formula is defined as a measure of the mass of suspended solids in a mixture of wastewater and activated sludge, which is essential in determining the oxygen requirement for the aeration tank in wastewater treatment processes is calculated using MLSS in Returned or Wasted Sludge = (((Sewage Discharge*(Influent BOD-Effluent BOD given Oxygen Required))/Ratio of BOD to Ultimate BOD)-Theoretical Oxygen Requirement)/(1.42*Volume of Wasted Sludge per day). To calculate MLSS Returned given Oxygen Required in Aeration Tank, you need Sewage Discharge (Q_s), Influent BOD (Q_i), Effluent BOD given Oxygen Required (Q_o), Ratio of BOD to Ultimate BOD (f), Theoretical Oxygen Requirement (O₂) & Volume of Wasted Sludge per day (Q_w). With our tool, you need to enter the respective value for Sewage Discharge, Influent BOD, Effluent BOD given Oxygen Required, Ratio of BOD to Ultimate BOD, Theoretical Oxygen Requirement & Volume of Wasted Sludge per day 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 Returned or Wasted Sludge?

In this formula, MLSS in Returned or Wasted Sludge uses Sewage Discharge, Influent BOD, Effluent BOD given Oxygen Required, Ratio of BOD to Ultimate BOD, Theoretical Oxygen Requirement & Volume of Wasted Sludge per day. We can use 3 other way(s) to calculate the same, which is/are as follows -

MLSS in Returned or Wasted Sludge = (((Sewage Discharge*(Influent BOD-Effluent BOD given Oxygen Demand of Biomass))/Ratio of BOD to Ultimate BOD)-Theoretical Oxygen Requirement)/(Oxygen Demand of Biomass*Volume of Wasted Sludge per day)
MLSS in Returned or Wasted Sludge = (((Sewage Discharge*(Influent BOD-Effluent BOD given Ultimate BOD))/(5 Days BOD/Ultimate BOD))-Theoretical Oxygen Requirement)/(1.42*Volume of Wasted Sludge per day)
MLSS in Returned or Wasted Sludge = (((Sewage Discharge*(Influent BOD-Effluent BOD given Oxygen Demand and Ultimate BOD))/(5 Days BOD/Ultimate BOD))-Theoretical Oxygen Requirement)/(Oxygen Demand of Biomass*Volume of Wasted Sludge per day)

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