✖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%

✖Mixed Liquor Suspended Solids refers to the concentration of suspended solids in the mixed liquor of an aeration tank during the activated sludge process.ⓘ Mixed Liquor Suspended Solid [X^']

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Formula

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Mixed Liquor Suspended Solid

Formula

`"X"^{"'"} = ("Q"*"Q"_{"i"})/("FM"*"V")`

Example

`"31.11111mg/L"=("20m³"*"11.2mg/L")/("0.8"*"9m³")`

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Mixed Liquor Suspended Solid Solution

STEP 0: Pre-Calculation Summary

Formula Used

Mixed Liquor Suspended Solids = (Sewage Flow*Influent BOD)/(Food to microorganism ratio*Volume of Tank)
X^' = (Q*Q_i)/(FM*V)
This formula uses 5 Variables

Variables Used

Mixed Liquor Suspended Solids - (Measured in Kilogram per Cubic Meter) - Mixed Liquor Suspended Solids refers to the concentration of suspended solids in the mixed liquor of 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: 20 Cubic Meter --> 20 Cubic Meter No Conversion Required
Influent BOD: 11.2 Milligram per Liter --> 0.0112 Kilogram per Cubic Meter (Check conversion here)
Food to microorganism ratio: 0.8 --> No Conversion Required
Volume of Tank: 9 Cubic Meter --> 9 Cubic Meter No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

X^' = (Q*Q_i)/(FM*V) --> (20*0.0112)/(0.8*9)

Evaluating ... ...

X^' = 0.0311111111111111

STEP 3: Convert Result to Output's Unit

0.0311111111111111 Kilogram per Cubic Meter -->31.1111111111111 Milligram per Liter (Check conversion here)

FINAL ANSWER

31.1111111111111 ≈ 31.11111 Milligram per Liter <-- Mixed Liquor Suspended Solids

(Calculation completed in 00.004 seconds)

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Created by Suraj Kumar

Birsa Institute of Technology (BIT), Sindri

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< 20 Food to Microorganism Ratio or F to M Ratio Calculators

Microbial Mass in Aeration System given MLSS

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

BOD Load Applied given MLSS

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

MLSS given BOD Load Applied to Aeration System

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

Volume of Tank given MLSS

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

BOD Influent given MLSS

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

Sewage Flow given MLSS

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

Mixed Liquor Suspended Solid

Go Mixed Liquor Suspended Solids = (Sewage Flow*Influent BOD)/(Food to microorganism ratio*Volume of Tank)

Biological Oxygen Demand influent

Go Biological oxygen demand = (Food to microorganism ratio*Volume of Tank*MLSS)/Sewage Flow

Volume of Tank given Food to Microorganism Ratio

Go Volume of Tank = (Sewage Flow*Influent BOD)/(Food to microorganism ratio*MLSS)

Food to Microorganism Ratio given MLSS

Go Food to microorganism ratio = (Sewage Flow*Influent BOD)/(MLSS*Volume of Tank)

Sewage Flow given Food to Microorganism Ratio

Go Sewage Flow = (Food to microorganism ratio*Volume of Tank*MLSS)/Influent BOD

Total Microbial Mass given Food to Microorganism Ratio

Go Total Microbial Mass = Daily bod/Food to microorganism ratio

Daily BOD Load given Food to Microorganism Ratio

Go Daily bod = Food to microorganism ratio*Total Microbial Mass

Food to Microorganism Ratio

Go Food to microorganism ratio = Daily bod/Total Microbial Mass

MLSS given Microbial Mass in Aeration System

Go MLSS = (Total Microbial Mass/Volume of Tank)

Volume of Tank given Microbial Mass in Aeration System

Go Volume of Tank = Total Microbial Mass/MLSS

Microbial Mass in Aeration System

Go Total Microbial Mass = MLSS*Volume of Tank

Sewage Flow into Aeration System given BOD Load applied

Go Sewage Flow = Daily bod/Influent BOD

BOD of Influent Sewage given BOD Load applied

Go Influent BOD = Daily bod/Sewage Flow

BOD Load applied to Aeration System

Go Daily bod = Sewage Flow*Influent BOD

Mixed Liquor Suspended Solid Formula

Mixed Liquor Suspended Solids = (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 Mixed Liquor Suspended Solids = (Sewage Flow*Influent BOD)/(Food to microorganism ratio*Volume of Tank) to calculate the Mixed Liquor Suspended Solids, The Mixed Liquor Suspended Solid Formula is defined as, when F/M Ratio is Given is the concentration of suspended solids, in an aeration tank during the activated sludge process. Mixed Liquor Suspended Solids 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 -> 31111.11 = (20*0.0112)/(0.8*9).

FAQ

What is Mixed Liquor Suspended Solid?

The Mixed Liquor Suspended Solid Formula is defined as, when F/M Ratio is Given is the concentration of suspended solids, in an aeration tank during the activated sludge process and is represented as X^' = (Q*Q_i)/(FM*V) or Mixed Liquor Suspended Solids = (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, when F/M Ratio is Given is the concentration of suspended solids, in an aeration tank during the activated sludge process is calculated using Mixed Liquor Suspended Solids = (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.

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