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.

- First, determine the wet volume of settled sludge (mL/L).
- Next, determine the dry weight concentration (grams/L).
- Next, gather the formula from above = SVI = WV / DWC.
- Finally, calculate the Sludge Volume Index.
- 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