Enter the wet volume of settled sludge (mL/L) and the dry weight concentration (grams/L) into the Calculator. The calculator will evaluate the Sludge Volume Index.

## Sludge Volume Index Formula

SVI = WV / DWC

Variables:

• SVI is the Sludge Volume Index ()
• WV is the wet volume of settled sludge (mL/L)
• DWC is the dry weight concentration (grams/L)

To calculate Sludge Volume Index, divide the wet volume of settled sludge by the dry weight concentration.

## How to Calculate Sludge Volume Index?

The following steps outline how to calculate the Sludge Volume Index.

1. First, determine the wet volume of settled sludge (mL/L).
2. Next, determine the dry weight concentration (grams/L).
3. Next, gather the formula from above = SVI = WV / DWC.
4. Finally, calculate the Sludge Volume Index.
5. After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem :

Use the following variables as an example problem to test your knowledge.

wet volume of settled sludge (mL/L) = 75

dry weight concentration (grams/L) = 100