Biological Oxygen Demand Influent Calculator

✖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.ⓘ MLSS [X]			+10% -10%
✖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%

✖Biological Oxygen Demand is applied to determine the aerobic destructibility of organic substances.ⓘ Biological Oxygen Demand Influent [BOD_i]

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Formula

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Biological Oxygen Demand Influent

Formula

BOD i = \frac{FM \cdot V \cdot X}{Q}

Example

0.000901 mg/L = \frac{0.001 \cdot 1.5 m³ \cdot 2.0 mg/L}{3.33 m³}

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Biological Oxygen Demand Influent Solution

STEP 0: Pre-Calculation Summary

Formula Used

Biological Oxygen Demand = (Food to Microorganism Ratio*Volume of Tank*MLSS)/Sewage Flow
BOD_i = (FM*V*X)/Q
This formula uses 5 Variables

Variables Used

Biological Oxygen Demand - (Measured in Kilogram per Cubic Meter) - Biological Oxygen Demand is applied to determine the aerobic destructibility of organic substances.
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.
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.

STEP 1: Convert Input(s) to Base Unit

Food to Microorganism Ratio: 0.001 --> No Conversion Required
Volume of Tank: 1.5 Cubic Meter --> 1.5 Cubic Meter No Conversion Required
MLSS: 2 Milligram per Liter --> 0.002 Kilogram per Cubic Meter (Check conversion here)
Sewage Flow: 3.33 Cubic Meter --> 3.33 Cubic Meter No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

BOD_i = (FM*V*X)/Q --> (0.001*1.5*0.002)/3.33

Evaluating ... ...

BOD_i = 9.00900900900901E-07

STEP 3: Convert Result to Output's Unit

9.00900900900901E-07 Kilogram per Cubic Meter -->0.000900900900900901 Milligram per Liter (Check conversion here)

FINAL ANSWER

0.000900900900900901 ≈ 0.000901 Milligram per Liter <-- Biological Oxygen Demand

(Calculation completed in 00.004 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 to Microorganism Ratio or F to M Ratio Calculators

BOD Load applied to Aeration System

Go BOD Load applied to Aeration System = Sewage Flow*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

Biological Oxygen Demand Influent Formula

Biological Oxygen Demand = (Food to Microorganism Ratio*Volume of Tank*MLSS)/Sewage Flow
BOD_i = (FM*V*X)/Q

What is BOD?

Biochemical oxygen demand is the amount of dissolved oxygen needed by aerobic biological organisms to break down organic material present in a given water sample at certain temperature over a specific time period.

How to Calculate Biological Oxygen Demand Influent?

Biological Oxygen Demand Influent calculator uses Biological Oxygen Demand = (Food to Microorganism Ratio*Volume of Tank*MLSS)/Sewage Flow to calculate the Biological Oxygen Demand, The Biological Oxygen Demand Influent formula is defined as the amount of dissolved oxygen needed by aerobic biological organisms in a body of water to break down organic material present in a given water sample at a certain temperature over a specific time period. Biological Oxygen Demand is denoted by BOD_i symbol.

How to calculate Biological Oxygen Demand Influent using this online calculator? To use this online calculator for Biological Oxygen Demand Influent, enter Food to Microorganism Ratio (FM), Volume of Tank (V), MLSS (X) & Sewage Flow (Q) and hit the calculate button. Here is how the Biological Oxygen Demand Influent calculation can be explained with given input values -> 5.405405 = (0.001*1.5*0.002)/3.33.

FAQ

What is Biological Oxygen Demand Influent?

The Biological Oxygen Demand Influent formula is defined as the amount of dissolved oxygen needed by aerobic biological organisms in a body of water to break down organic material present in a given water sample at a certain temperature over a specific time period and is represented as BOD_i = (FM*V*X)/Q or Biological Oxygen Demand = (Food to Microorganism Ratio*Volume of Tank*MLSS)/Sewage Flow. 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, MLSS is the concentration of suspended solids in the mixed liquor within an aeration tank during the activated sludge process & Sewage Flow into the aeration tank is the sewage flow into the aeration tank when we have prior information of other parameters used.

How to calculate Biological Oxygen Demand Influent?

The Biological Oxygen Demand Influent formula is defined as the amount of dissolved oxygen needed by aerobic biological organisms in a body of water to break down organic material present in a given water sample at a certain temperature over a specific time period is calculated using Biological Oxygen Demand = (Food to Microorganism Ratio*Volume of Tank*MLSS)/Sewage Flow. To calculate Biological Oxygen Demand Influent, you need Food to Microorganism Ratio (FM), Volume of Tank (V), MLSS (X) & Sewage Flow (Q). With our tool, you need to enter the respective value for Food to Microorganism Ratio, Volume of Tank, MLSS & Sewage Flow 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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