Sludge Volume Index (SVI) Calculator

Formula

The formula to calculate the Sludge Volume Index (SVI) is:

\[ SVI = \frac{WV}{DWC} \]

Where:

\( SVI \) is the Sludge Volume Index (mL/g)
\( WV \) is the Wet Volume of Settled Sludge (mL/L)
\( DWC \) is the Dry Weight Concentration (grams/L)

What is the Sludge Volume Index (SVI)?

The Sludge Volume Index (SVI) is a measure used in wastewater treatment to evaluate the settleability of sludge. It is calculated by dividing the wet volume of settled sludge by the dry weight concentration. A lower SVI indicates better settling characteristics of the sludge.

Example Calculation

Let's consider an example:

Wet Volume of Settled Sludge (WV): 150 mL/L
Dry Weight Concentration (DWC): 3 grams/L

Using the formula to calculate the Sludge Volume Index:

\[ SVI = \frac{150}{3} = 50 \text{ mL/g} \]

This means that the sludge volume index for this sample is 50 mL/g.