We do F/M calculations with either MLSS or MLVSS standing in as "microbes". However, both MLSS & MLVSS contain more "other" than actual living microbes. Depending upon the system, the living microbe portion of MLVSS can have a range from <10 to over 20% with younger sludge ages having a greater percentage as living, active microbes.
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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