Mixed Liquor Suspended Solid Calculator

✖Sewage Flow into the aeration tank is the sewage flow into the aeration tank when we have prior information of other parameters used.ⓘ Sewage Flow [Q]			+10% -10%
✖Influent BOD is the total amount of BOD which is present in the incoming sewage.ⓘ Influent BOD [Q_i]			+10% -10%
✖Food to Microorganism Ratio is actually a measurement of the amount of incoming food divided by the Lbs of Microorganisms in your system.ⓘ Food to Microorganism Ratio [FM]			+10% -10%
✖Volume of Tank is defined as the capacity of flocculation and mixing tank.ⓘ Volume of Tank [V]			+10% -10%

✖MLSS is the concentration of suspended solids in the mixed liquor within an aeration tank during the activated sludge process.ⓘ Mixed Liquor Suspended Solid [X]

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Mixed Liquor Suspended Solid Solution

STEP 0: Pre-Calculation Summary

Formula Used

MLSS = (Sewage Flow*Influent BOD)/(Food to Microorganism Ratio*Volume of Tank)
X = (Q*Q_i)/(FM*V)
This formula uses 5 Variables

Variables Used

MLSS - (Measured in Kilogram per Cubic Meter) - MLSS is the concentration of suspended solids in the mixed liquor within an aeration tank during the activated sludge process.
Sewage Flow - (Measured in Cubic Meter) - Sewage Flow into the aeration tank is the sewage flow into the aeration tank when we have prior information of other parameters used.
Influent BOD - (Measured in Kilogram per Cubic Meter) - Influent BOD is the total amount of BOD which is present in the incoming sewage.
Food to Microorganism Ratio - Food to Microorganism Ratio is actually a measurement of the amount of incoming food divided by the Lbs of Microorganisms in your system.
Volume of Tank - (Measured in Cubic Meter) - Volume of Tank is defined as the capacity of flocculation and mixing tank.

STEP 1: Convert Input(s) to Base Unit

Sewage Flow: 3.33 Cubic Meter --> 3.33 Cubic Meter No Conversion Required
Influent BOD: 0.0009 Milligram per Liter --> 9E-07 Kilogram per Cubic Meter (Check conversion here)
Food to Microorganism Ratio: 0.001 --> No Conversion Required
Volume of Tank: 1.5 Cubic Meter --> 1.5 Cubic Meter No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

X = (Q*Q_i)/(FM*V) --> (3.33*9E-07)/(0.001*1.5)

Evaluating ... ...

X = 0.001998

STEP 3: Convert Result to Output's Unit

0.001998 Kilogram per Cubic Meter -->1.998 Milligram per Liter (Check conversion here)

FINAL ANSWER

1.998 Milligram per Liter <-- MLSS

(Calculation completed in 00.020 seconds)

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Created by Suraj Kumar

Birsa Institute of Technology (BIT), Sindri

Suraj Kumar has created this Calculator and 2100+ more calculators!

Verified by Ishita Goyal

Meerut Institute of Engineering and Technology (MIET), Meerut

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< Food is to Microorganism Ratio or F is to M Ratio Calculators

BOD Load applied to Aeration System

LaTeX Go BOD Load applied to Aeration System = Sewage Flow*Influent BOD

Total Microbial Mass given Food to Microorganism Ratio

LaTeX Go Total Microbial Mass = Daily BOD/Food to Microorganism Ratio

Daily BOD Load given Food to Microorganism Ratio

LaTeX Go Daily BOD = Food to Microorganism Ratio*Total Microbial Mass

Food to Microorganism Ratio

LaTeX Go Food to Microorganism Ratio = Daily BOD/Total Microbial Mass

Mixed Liquor Suspended Solid Formula

LaTeX Go

MLSS = (Sewage Flow*Influent BOD)/(Food to Microorganism Ratio*Volume of Tank)
X = (Q*Q_i)/(FM*V)

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 Mixed Liquor Suspended Solid?

Mixed Liquor Suspended Solid calculator uses MLSS = (Sewage Flow*Influent BOD)/(Food to Microorganism Ratio*Volume of Tank) to calculate the MLSS, The Mixed Liquor Suspended Solid formula is defined as the concentration of suspended solids in the mixed liquor of an aeration tank during the activated sludge process in wastewater treatment. MLSS is denoted by X symbol.

How to calculate Mixed Liquor Suspended Solid using this online calculator? To use this online calculator for Mixed Liquor Suspended Solid, enter Sewage Flow (Q), Influent BOD (Q_i), Food to Microorganism Ratio (FM) & Volume of Tank (V) and hit the calculate button. Here is how the Mixed Liquor Suspended Solid calculation can be explained with given input values -> 333 = (3.33*9E-07)/(0.001*1.5).

FAQ

What is Mixed Liquor Suspended Solid?

The Mixed Liquor Suspended Solid formula is defined as the concentration of suspended solids in the mixed liquor of an aeration tank during the activated sludge process in wastewater treatment and is represented as X = (Q*Q_i)/(FM*V) or MLSS = (Sewage Flow*Influent BOD)/(Food to Microorganism Ratio*Volume of Tank). Sewage Flow into the aeration tank is the sewage flow into the aeration tank when we have prior information of other parameters used, Influent BOD is the total amount of BOD which is present in the incoming sewage, Food to Microorganism Ratio is actually a measurement of the amount of incoming food divided by the Lbs of Microorganisms in your system & Volume of Tank is defined as the capacity of flocculation and mixing tank.

How to calculate Mixed Liquor Suspended Solid?

The Mixed Liquor Suspended Solid formula is defined as the concentration of suspended solids in the mixed liquor of an aeration tank during the activated sludge process in wastewater treatment is calculated using MLSS = (Sewage Flow*Influent BOD)/(Food to Microorganism Ratio*Volume of Tank). To calculate Mixed Liquor Suspended Solid, you need Sewage Flow (Q), Influent BOD (Q_i), Food to Microorganism Ratio (FM) & Volume of Tank (V). With our tool, you need to enter the respective value for Sewage Flow, Influent BOD, Food to Microorganism Ratio & Volume of Tank 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 Sewage Flow, Influent BOD, Food to Microorganism Ratio & Volume of Tank. We can use 2 other way(s) to calculate the same, which is/are as follows -

MLSS = (Total Microbial Mass/Volume of Tank)
MLSS = (Total Microbial Mass*Sewage Flow*Influent BOD)/(Volume of Tank*Daily BOD)

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