Water and Wastewater.com Help Forum - DSVI (Diluted Sludge Volume Index)
QuestionMy question is about DSVI(diluted sludge volume index), what is it and how the test is carried out I really hope you can provide me with some information about this.
replies
You can find good explanation of the diluted SVI test procedure in "Manual on the Causes and Control of Activated Sludge Bulking, Foaming, and Other Solids Separation Problems" by Jenkins, Richard & Daigger.
Sewer_Doc
Diluted Sludge Volume Index is used, when determination of the sludge volume index (undiluted) results in values above a certain limit. This means that above these values determination will give huge scattering, normaly one can observe water channels or layers inside the bulk sludge. Sludge volume is used as a rough prediction of sludge quality.
If your intend is to obtain information about consolidation of sludges the function of packing density via excess pressure of sludge solids has to be investigated up-to high sludge concentrations. This can be done by investigations in a centrifugal field or in filtration cells under pressure. Diluted sludge volume index seems not to be very useful in this respect.
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