Food to Microorganism Ratio given MLSS 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%
✖MLSS is the sum of volatile suspended solids (organics) and fixed suspended solids (inorganics).ⓘ MLSS [X]			+10% -10%
✖Volume of tank is defined as the capacity of flocculation and mixing tank.ⓘ Volume of Tank [V]			+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 given MLSS [FM]

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Formula

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Food to Microorganism Ratio given MLSS

Formula

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

Example

`"0.020741"=("20m³"*"11.2mg/L")/("1200mg/L"*"9m³")`

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Food to Microorganism Ratio given MLSS Solution

STEP 0: Pre-Calculation Summary

Formula Used

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

Variables Used

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.
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.
MLSS - (Measured in Kilogram per Cubic Meter) - MLSS is the sum of volatile suspended solids (organics) and fixed suspended solids (inorganics).
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)
MLSS: 1200 Milligram per Liter --> 1.2 Kilogram per Cubic Meter (Check conversion here)
Volume of Tank: 9 Cubic Meter --> 9 Cubic Meter No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

FM = (Q*Q_i)/(X*V) --> (20*0.0112)/(1.2*9)

Evaluating ... ...

FM = 0.0207407407407407

STEP 3: Convert Result to Output's Unit

0.0207407407407407 --> No Conversion Required

FINAL ANSWER

0.0207407407407407 ≈ 0.020741 <-- Food to microorganism ratio

(Calculation completed in 00.004 seconds)

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Home » Engineering » Civil » Environmental Engineering » Treatment of Sewage » Food to Microorganism Ratio or F/M Ratio » Food to Microorganism Ratio given MLSS

Credits

Created by Suraj Kumar

Birsa Institute of Technology (BIT), Sindri

Suraj Kumar has created this Calculator and 2200+ more calculators!

Verified by Ishita Goyal

Meerut Institute of Engineering and Technology (MIET), Meerut

Ishita Goyal has verified this Calculator and 2600+ more calculators!

< 20 Food to Microorganism Ratio or F/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)

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)

Mixed Liquor Suspended Solid

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

Food to Microorganism Ratio given MLSS Formula

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

What is food to microorganism ratio ?

The term Food to Microorganism Ratio (F/M) is actually a measurement of the amount of incoming food ( Lbs of Influent BOD) divided by the Lbs of Microorganisms in your system.

How to Calculate Food to Microorganism Ratio given MLSS?

Food to Microorganism Ratio given MLSS calculator uses Food to microorganism ratio = (Sewage Flow*Influent BOD)/(MLSS*Volume of Tank) to calculate the Food to microorganism ratio, The Food to Microorganism Ratio given MLSS calculates the ratio of food to mass of microorganism when we have prior information of other parameters used. Food to microorganism ratio is denoted by FM symbol.

How to calculate Food to Microorganism Ratio given MLSS using this online calculator? To use this online calculator for Food to Microorganism Ratio given MLSS, enter Sewage Flow (Q), Influent BOD (Q_i), MLSS (X) & Volume of Tank (V) and hit the calculate button. Here is how the Food to Microorganism Ratio given MLSS calculation can be explained with given input values -> 0.020741 = (20*0.0112)/(1.2*9).

FAQ

What is Food to Microorganism Ratio given MLSS?

The Food to Microorganism Ratio given MLSS calculates the ratio of food to mass of microorganism when we have prior information of other parameters used and is represented as FM = (Q*Q_i)/(X*V) or Food to microorganism ratio = (Sewage Flow*Influent BOD)/(MLSS*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, MLSS is the sum of volatile suspended solids (organics) and fixed suspended solids (inorganics) & Volume of tank is defined as the capacity of flocculation and mixing tank.

How to calculate Food to Microorganism Ratio given MLSS?

The Food to Microorganism Ratio given MLSS calculates the ratio of food to mass of microorganism when we have prior information of other parameters used is calculated using Food to microorganism ratio = (Sewage Flow*Influent BOD)/(MLSS*Volume of Tank). To calculate Food to Microorganism Ratio given MLSS, you need Sewage Flow (Q), Influent BOD (Q_i), MLSS (X) & Volume of Tank (V). With our tool, you need to enter the respective value for Sewage Flow, Influent BOD, MLSS & 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 Food to microorganism ratio?

In this formula, Food to microorganism ratio uses Sewage Flow, Influent BOD, MLSS & Volume of Tank. We can use 1 other way(s) to calculate the same, which is/are as follows -

Food to microorganism ratio = Daily bod/Total Microbial Mass

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