Recirculation Factor Calculator

✖Recirculation factor r represents the average number of passes of the influent organic matter through the trickling filter.ⓘ Recirculation Factor [F]

⎘ Copy

👎

Formula

✖

Recirculation Factor

Formula

`"F" = (1+"α")/((1+"α"/10)^2)`

Example

`"1.890359"=(1+"1.5")/((1+"1.5"/10)^2)`

Calculator

LaTeX

Reset

👍

Download Environmental Engineering Formula PDF

Recirculation Factor Solution

STEP 0: Pre-Calculation Summary

Formula Used

Recirculation factor = (1+Recirculation Ratio)/((1+Recirculation Ratio/10)^2)
F = (1+α)/((1+α/10)^2)
This formula uses 2 Variables

Variables Used

Recirculation factor - Recirculation factor r represents the average number of passes of the influent organic matter through the trickling filter.
Recirculation Ratio - Recirculation Ratio is the ratio of the RAS pumping rate to influent flow rate.

STEP 1: Convert Input(s) to Base Unit

Recirculation Ratio: 1.5 --> No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

F = (1+α)/((1+α/10)^2) --> (1+1.5)/((1+1.5/10)^2)

Evaluating ... ...

F = 1.89035916824197

STEP 3: Convert Result to Output's Unit

1.89035916824197 --> No Conversion Required

FINAL ANSWER

1.89035916824197 ≈ 1.890359 <-- Recirculation factor

(Calculation completed in 00.004 seconds)

You are here -

Home » Engineering » Civil » Environmental Engineering » Design of trickling filter using NRC equations » Recirculation Factor » Recirculation Factor

Credits

Created by Ishita Goyal

Meerut Institute of Engineering and Technology (MIET), Meerut

Ishita Goyal has created this Calculator and 500+ more calculators!

Verified by Chandana P Dev

NSS College of Engineering (NSSCE), Palakkad

Chandana P Dev has verified this Calculator and 1700+ more calculators!

< 2 Recirculation Factor Calculators

Recirculation Factor given Efficiency of Second Filter Stage

Go Recirculation factor = (BOD Loading to Filter 2/Volume)*1/(((1-Efficiency of First Filter Stage)/0.0561)*(100/Efficiency of Second Filter Stage-1))^2

Recirculation Factor

Go Recirculation factor = (1+Recirculation Ratio)/((1+Recirculation Ratio/10)^2)

Recirculation Factor Formula

Recirculation factor = (1+Recirculation Ratio)/((1+Recirculation Ratio/10)^2)
F = (1+α)/((1+α/10)^2)

What is the use of recirculation factor?

The capacity of the pumps doing the recirculation of sewage is determined with this. The increased load on the trickling filters is also determined by this.

How to Calculate Recirculation Factor?

Recirculation Factor calculator uses Recirculation factor = (1+Recirculation Ratio)/((1+Recirculation Ratio/10)^2) to calculate the Recirculation factor, The Recirculation factor represents the average number of passes of the influent organic matter through the trickling filter. Recirculation factor is denoted by F symbol.

How to calculate Recirculation Factor using this online calculator? To use this online calculator for Recirculation Factor, enter Recirculation Ratio (α) and hit the calculate button. Here is how the Recirculation Factor calculation can be explained with given input values -> 2.504129 = (1+1.5)/((1+1.5/10)^2).

FAQ

What is Recirculation Factor?

The Recirculation factor represents the average number of passes of the influent organic matter through the trickling filter and is represented as F = (1+α)/((1+α/10)^2) or Recirculation factor = (1+Recirculation Ratio)/((1+Recirculation Ratio/10)^2). Recirculation Ratio is the ratio of the RAS pumping rate to influent flow rate.

How to calculate Recirculation Factor?

The Recirculation factor represents the average number of passes of the influent organic matter through the trickling filter is calculated using Recirculation factor = (1+Recirculation Ratio)/((1+Recirculation Ratio/10)^2). To calculate Recirculation Factor, you need Recirculation Ratio (α). With our tool, you need to enter the respective value for Recirculation Ratio 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 Recirculation factor?

In this formula, Recirculation factor uses Recirculation Ratio. We can use 1 other way(s) to calculate the same, which is/are as follows -

Recirculation factor = (BOD Loading to Filter 2/Volume)*1/(((1-Efficiency of First Filter Stage)/0.0561)*(100/Efficiency of Second Filter Stage-1))^2

Home

FREE PDFs

🔍 Search