The SV30 is possibly the easiest test done by wastewater treatment system operators. Fill a wide cylinder or settleometer with aeration basin MLSS and allow to settle for 30 minutes. This test is designed to give you settling rates for the MLSS and an estimate of how well secondary clarification will work. If all things are in good shape, just reading the 30 minute number is enough. However if you have problems with filamentous or non-filamentous bulking, secondary clarifiers have become undersized (either by hydraulic or solids carrying rate), denitrification, or have problems with pin-floc, fines, or turbidity - you should do more than just read the number after 30 minutes. Here is how to take advantage of settling tests using SV30 equipment.
Erik Rumbaugh has been involved in biological waste treatment for over 20 years. He has worked with industrial and municipal wastewater facilities to ensure optimal performance of their treatment systems. He is a founder of Aster Bio (www.asterbio.com) specializing in biological waste treatment.
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