Recirculation Ratio of Wastewater Solution

STEP 0: Pre-Calculation Summary
Formula Used
Recirculation Ratio = Recirculation Flow/Waste water flow
α = Qr/W
This formula uses 3 Variables
Variables Used
Recirculation Ratio - Recirculation Ratio is the ratio of the RAS pumping rate to influent flow rate.
Recirculation Flow - (Measured in Cubic Meter per Second) - Recirculation Flow is often due to a separation of a boundary layer, for example at sharp edge of a wall (flows in cavities or below a step).
Waste water flow - (Measured in Cubic Meter per Second) - Waste water flow are generated from domestic, industrial, and commercial uses.
STEP 1: Convert Input(s) to Base Unit
Recirculation Flow: 2.5 Cubic Meter per Second --> 2.5 Cubic Meter per Second No Conversion Required
Waste water flow: 1.5 Cubic Meter per Second --> 1.5 Cubic Meter per Second No Conversion Required
STEP 2: Evaluate Formula
Substituting Input Values in Formula
α = Qr/W --> 2.5/1.5
Evaluating ... ...
α = 1.66666666666667
STEP 3: Convert Result to Output's Unit
1.66666666666667 --> No Conversion Required
FINAL ANSWER
1.66666666666667 1.666667 <-- Recirculation Ratio
(Calculation completed in 00.004 seconds)

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
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2 Recirculation Ratio Calculators

Recirculation Ratio given Hydraulic Loading
Go Recirculation Ratio = ((Hydraulic loading*Area*1440)/Waste water flow)-1
Recirculation Ratio of Wastewater
Go Recirculation Ratio = Recirculation Flow/Waste water flow

Recirculation Ratio of Wastewater Formula

Recirculation Ratio = Recirculation Flow/Waste water flow
α = Qr/W

What is the criteria of recirculation ratio?

The recirculation ratio should be such that BOD entering filter (including recirculation) is not more than three times the BOD expected in the effluent.

How to Calculate Recirculation Ratio of Wastewater?

Recirculation Ratio of Wastewater calculator uses Recirculation Ratio = Recirculation Flow/Waste water flow to calculate the Recirculation Ratio, The Recirculation ratio of wastewater is the amount of wastewater that flows through the advanced pretreatment component divided by the amount of wastewater that is sent to the final treatment and dispersal component. Recirculation Ratio is denoted by α symbol.

How to calculate Recirculation Ratio of Wastewater using this online calculator? To use this online calculator for Recirculation Ratio of Wastewater, enter Recirculation Flow (Qr) & Waste water flow (W) and hit the calculate button. Here is how the Recirculation Ratio of Wastewater calculation can be explained with given input values -> 26.66667 = 2.5/1.5.

FAQ

What is Recirculation Ratio of Wastewater?
The Recirculation ratio of wastewater is the amount of wastewater that flows through the advanced pretreatment component divided by the amount of wastewater that is sent to the final treatment and dispersal component and is represented as α = Qr/W or Recirculation Ratio = Recirculation Flow/Waste water flow. Recirculation Flow is often due to a separation of a boundary layer, for example at sharp edge of a wall (flows in cavities or below a step) & Waste water flow are generated from domestic, industrial, and commercial uses.
How to calculate Recirculation Ratio of Wastewater?
The Recirculation ratio of wastewater is the amount of wastewater that flows through the advanced pretreatment component divided by the amount of wastewater that is sent to the final treatment and dispersal component is calculated using Recirculation Ratio = Recirculation Flow/Waste water flow. To calculate Recirculation Ratio of Wastewater, you need Recirculation Flow (Qr) & Waste water flow (W). With our tool, you need to enter the respective value for Recirculation Flow & Waste water flow 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 Ratio?
In this formula, Recirculation Ratio uses Recirculation Flow & Waste water flow. We can use 1 other way(s) to calculate the same, which is/are as follows -
  • Recirculation Ratio = ((Hydraulic loading*Area*1440)/Waste water flow)-1
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