![Process control using Sludge Volume Index (SVI)](https://cole-tpomag.imgix.net/https%3A%2F%2Fwww.tpomag.com%2Fuploads%2Fimages%2Fsvi-figure1.jpg?crop=focalpoint&fit=crop&fp-x=0.5&fp-y=0.5&h=620&ixlib=php-1.1.0&q=75&w=1024&s=cb8a75910f24848ba405e9c44e00bfad)
In a previous article (“What the Heck is SVI?”), I discussed sludge volume index (SVI) and its value as a process control tool. In this installment, I want to answer a few questions I received from readers, clarify the formula result, and discuss SVI a little more in depth.
There...