Sludge Recirculation Rate given MLSS and SVI Calculator

✖Sewage discharge is the flow rate of sewage when it is being discharged in the river.ⓘ Sewage Discharge [Q_s]			+10% -10%
✖MLSS is the sum of volatile suspended solids (organics) and fixed suspended solids (inorganics).ⓘ MLSS [X]			+10% -10%
✖Sludge Volume Index is the ratio of volume to MLSS.ⓘ Sludge Volume Index [SVI]			+10% -10%

✖Recirculation flow is the flow generated in recirculation tank collecting the primary treated effluent from a pretreatment component.ⓘ Sludge Recirculation Rate given MLSS and SVI [Q_r]

⎘ Copy

👎

Formula

✖

Sludge Recirculation Rate given MLSS and SVI

Formula

`"Q"_{"r"} = "Q"_{"s"}*("X"/(((10^6)/"SVI")-"X"))`

Example

`"2.073605m³/d"="10m³/s"*("1200mg/L"/(((10^6)/"2L/g")-"1200mg/L"))`

Calculator

LaTeX

Reset

👍

Download Environmental Engineering Formula PDF PDF Image

Sludge Recirculation Rate given MLSS and SVI Solution

STEP 0: Pre-Calculation Summary

Formula Used

Recirculation flow = Sewage Discharge*(MLSS/(((10^6)/Sludge Volume Index)-MLSS))
Q_r = Q_s*(X/(((10^6)/SVI)-X))
This formula uses 4 Variables

Variables Used

Recirculation flow - (Measured in Cubic Meter per Second) - Recirculation flow is the flow generated in recirculation tank collecting the primary treated effluent from a pretreatment component.
Sewage Discharge - (Measured in Cubic Meter per Second) - Sewage discharge is the flow rate of sewage when it is being discharged in the river.
MLSS - (Measured in Kilogram per Cubic Meter) - MLSS is the sum of volatile suspended solids (organics) and fixed suspended solids (inorganics).
Sludge Volume Index - (Measured in Cubic Meter per Kilogram) - Sludge Volume Index is the ratio of volume to MLSS.

STEP 1: Convert Input(s) to Base Unit

Sewage Discharge: 10 Cubic Meter per Second --> 10 Cubic Meter per Second No Conversion Required
MLSS: 1200 Milligram per Liter --> 1.2 Kilogram per Cubic Meter (Check conversion here)
Sludge Volume Index: 2 Liter per Gram --> 2 Cubic Meter per Kilogram (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

Q_r = Q_s*(X/(((10^6)/SVI)-X)) --> 10*(1.2/(((10^6)/2)-1.2))

Evaluating ... ...

Q_r = 2.40000576001382E-05

STEP 3: Convert Result to Output's Unit

2.40000576001382E-05 Cubic Meter per Second -->2.07360497665194 Cubic Meter per Day (Check conversion here)

FINAL ANSWER

2.07360497665194 ≈ 2.073605 Cubic Meter per Day <-- Recirculation flow

(Calculation completed in 00.004 seconds)

You are here -

Home » Engineering » Civil » Environmental Engineering » Treatment of Sewage » Sludge Recycle and Rate of Returned Sludge » Sludge Recirculation Ratio » Sludge Recirculation Rate given MLSS and SVI

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!

< 4 Sludge Recirculation Ratio Calculators

Sludge Recirculation Rate given MLSS and SVI

Go Recirculation flow = Sewage Discharge*(MLSS/(((10^6)/Sludge Volume Index)-MLSS))

Sludge Recirculation Ratio given Sludge Volume Index

Go Recirculation Ratio = (MLSS/(((10^6)/Sludge Volume Index)-MLSS))

Sludge Recirculation Rate given Sludge Recirculation Ratio

Go Recirculation flow = Recirculation Ratio*Sewage Concentration

Sludge Recirculation Ratio

Go Recirculation Ratio = Recirculation flow/Sewage Discharge

Sludge Recirculation Rate given MLSS and SVI Formula

Recirculation flow = Sewage Discharge*(MLSS/(((10^6)/Sludge Volume Index)-MLSS))
Q_r = Q_s*(X/(((10^6)/SVI)-X))

What is sludge ?

Sludge is a semi-solid slurry that can be produced from a range of industrial processes, from water treatment, wastewater treatment or on-site sanitation systems.

How to Calculate Sludge Recirculation Rate given MLSS and SVI?

Sludge Recirculation Rate given MLSS and SVI calculator uses Recirculation flow = Sewage Discharge*(MLSS/(((10^6)/Sludge Volume Index)-MLSS)) to calculate the Recirculation flow, Sludge Recirculation Rate given MLSS and SVI calculates value of sludge recirculation rate when we have prior information of other parameters used. Recirculation flow is denoted by Q_r symbol.

How to calculate Sludge Recirculation Rate given MLSS and SVI using this online calculator? To use this online calculator for Sludge Recirculation Rate given MLSS and SVI, enter Sewage Discharge (Q_s), MLSS (X) & Sludge Volume Index (SVI) and hit the calculate button. Here is how the Sludge Recirculation Rate given MLSS and SVI calculation can be explained with given input values -> 179159.5 = 10*(1.2/(((10^6)/2)-1.2)).

FAQ

What is Sludge Recirculation Rate given MLSS and SVI?

Sludge Recirculation Rate given MLSS and SVI calculates value of sludge recirculation rate when we have prior information of other parameters used and is represented as Q_r = Q_s*(X/(((10^6)/SVI)-X)) or Recirculation flow = Sewage Discharge*(MLSS/(((10^6)/Sludge Volume Index)-MLSS)). Sewage discharge is the flow rate of sewage when it is being discharged in the river, MLSS is the sum of volatile suspended solids (organics) and fixed suspended solids (inorganics) & Sludge Volume Index is the ratio of volume to MLSS.

How to calculate Sludge Recirculation Rate given MLSS and SVI?

Sludge Recirculation Rate given MLSS and SVI calculates value of sludge recirculation rate when we have prior information of other parameters used is calculated using Recirculation flow = Sewage Discharge*(MLSS/(((10^6)/Sludge Volume Index)-MLSS)). To calculate Sludge Recirculation Rate given MLSS and SVI, you need Sewage Discharge (Q_s), MLSS (X) & Sludge Volume Index (SVI). With our tool, you need to enter the respective value for Sewage Discharge, MLSS & Sludge Volume Index 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 flow?

In this formula, Recirculation flow uses Sewage Discharge, MLSS & Sludge Volume Index. We can use 1 other way(s) to calculate the same, which is/are as follows -

Recirculation flow = Recirculation Ratio*Sewage Concentration

Home

FREE PDFs

🔍 Search