Why you don't want "old" sludge - how operating in endogenous respiration can hurt activated sludge effluent quality
Extended aeration biological treatment systems operate at a lower F/M than the original activated sludge designs. Why did we move to extended aeration over other aerobic treatment systems?
While operating in extended aeration mode has a lot of upside, running a system at too low an F/M ratio can be counter productive and effluent quality can decline. As you move further into endogenous respiration (very low F/M) the following things happen:
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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