MLSS given Sludge Volume Index and Recirculation Ratio Solution

STEP 0: Pre-Calculation Summary
Formula Used
MLSS = ((Recirculation Ratio*(10^6))/Sludge Volume Index)/(1+Recirculation Ratio)
X = ((α*(10^6))/SVI)/(1+α)
This formula uses 3 Variables
Variables Used
MLSS - (Measured in Milligram per Liter) - MLSS is the sum of volatile suspended solids (organics) and fixed suspended solids (inorganics).
Recirculation Ratio - Recirculation Ratio is the ratio of the RAS pumping rate to influent flow rate.
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
Recirculation Ratio: 1.5 --> No Conversion Required
Sludge Volume Index: 2 Liter per Gram --> 2 Cubic Meter per Kilogram (Check conversion here)
STEP 2: Evaluate Formula
Substituting Input Values in Formula
X = ((α*(10^6))/SVI)/(1+α) --> ((1.5*(10^6))/2)/(1+1.5)
Evaluating ... ...
X = 300000
STEP 3: Convert Result to Output's Unit
300 Kilogram per Cubic Meter -->300000 Milligram per Liter (Check conversion here)
FINAL ANSWER
300000 Milligram per Liter <-- MLSS
(Calculation completed in 00.004 seconds)

Credits

Created by Suraj Kumar
Birsa Institute of Technology (BIT), Sindri
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3 Mixed Liquor Suspended Solid MLSS Calculators

MLSS given SVI and Sewage Discharge
Go MLSS = (((Recirculation flow/Sewage Discharge)*(10^6))/Sludge Volume Index)/(1+(Recirculation flow/Sewage Discharge))
MLSS given Sludge Recirculation Ratio
Go MLSS = (Recirculation Ratio*MLSS in returned or wasted sludge)/(1+Recirculation Ratio)
MLSS given Sludge Volume Index and Recirculation Ratio
Go MLSS = ((Recirculation Ratio*(10^6))/Sludge Volume Index)/(1+Recirculation Ratio)

MLSS given Sludge Volume Index and Recirculation Ratio Formula

MLSS = ((Recirculation Ratio*(10^6))/Sludge Volume Index)/(1+Recirculation Ratio)
X = ((α*(10^6))/SVI)/(1+α)

What is mlss ?

Mixed liquor suspended solids (MLSS) is the concentration of suspended solids, in an aeration tank during the activated sludge process, which occurs during the treatment of waste water.

How to Calculate MLSS given Sludge Volume Index and Recirculation Ratio?

MLSS given Sludge Volume Index and Recirculation Ratio calculator uses MLSS = ((Recirculation Ratio*(10^6))/Sludge Volume Index)/(1+Recirculation Ratio) to calculate the MLSS, MLSS given Sludge Volume Index and Recirculation Ratio calculates mixed liquor suspended solids when we have prior information of other parameters used. MLSS is denoted by X symbol.

How to calculate MLSS given Sludge Volume Index and Recirculation Ratio using this online calculator? To use this online calculator for MLSS given Sludge Volume Index and Recirculation Ratio, enter Recirculation Ratio (α) & Sludge Volume Index (SVI) and hit the calculate button. Here is how the MLSS given Sludge Volume Index and Recirculation Ratio calculation can be explained with given input values -> 3.9E+8 = ((1.5*(10^6))/2)/(1+1.5).

FAQ

What is MLSS given Sludge Volume Index and Recirculation Ratio?
MLSS given Sludge Volume Index and Recirculation Ratio calculates mixed liquor suspended solids when we have prior information of other parameters used and is represented as X = ((α*(10^6))/SVI)/(1+α) or MLSS = ((Recirculation Ratio*(10^6))/Sludge Volume Index)/(1+Recirculation Ratio). Recirculation Ratio is the ratio of the RAS pumping rate to influent flow rate & Sludge Volume Index is the ratio of volume to MLSS.
How to calculate MLSS given Sludge Volume Index and Recirculation Ratio?
MLSS given Sludge Volume Index and Recirculation Ratio calculates mixed liquor suspended solids when we have prior information of other parameters used is calculated using MLSS = ((Recirculation Ratio*(10^6))/Sludge Volume Index)/(1+Recirculation Ratio). To calculate MLSS given Sludge Volume Index and Recirculation Ratio, you need Recirculation Ratio (α) & Sludge Volume Index (SVI). With our tool, you need to enter the respective value for Recirculation Ratio & 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 MLSS?
In this formula, MLSS uses Recirculation Ratio & Sludge Volume Index. We can use 2 other way(s) to calculate the same, which is/are as follows -
  • MLSS = (Recirculation Ratio*MLSS in returned or wasted sludge)/(1+Recirculation Ratio)
  • MLSS = (((Recirculation flow/Sewage Discharge)*(10^6))/Sludge Volume Index)/(1+(Recirculation flow/Sewage Discharge))
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