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Sludge volume index

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This is an old revision of this page, as edited by Fabrictramp (talk | contribs) at 18:35, 19 November 2016 (Dead-end pages clean up project; you can help!). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

Sludge Volume Index (SVI) is used to describe the settling characteristics of sludge in the aeration tank in Activated Sludge Process.[1] It is a process control parameter to determine the recycle rate of sludge. It was introduced by Mohlman in 1934, and has become the standard measure of the physical characteristics of activated sludge processes. It is defined as 'the volume (in ml) occupied by 1 gram of activated sludge after settling the aerated liquor for 30 minutes'.[2]

SVI (ml/gm) = settled sludge volume/sample volume (ml/l) * 1000 (mg/g)/ suspended solid concentration (mg/l)

References

  1. ^ http://www.tpomag.com/editorial/2010/03/what-the-heck-is-svi
  2. ^ "SLUDGE VOLUME INDEX (SVI)". Retrieved 19 November 2016.
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