=mL/g       Hope this ...

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=mL/g  

 

 

Hope this explains the difference.  SV is volume of settled solids in one-liter graduated transparent measuring cylinder after 30 minutes settling period.

mL/L – MLSS – Mixed Liquor Suspended Solids

ppm SVI is a key factor when it comes to the clarifier design so that clear water discharge can be obtained without significant carryover of sludge