Reference Library

Low Dissolved Oxygen (DO): The term “Low DO” is relative and specific to many factors, often most significantly the available oxygen and its relativity to the oxygen uptake rate of the bacteria. In most “traditional systems” >2 mg/L of DO at the front end of the aeration basin is adequate, however every system is different (for example in many HPO processes with very high F/M ratio/bacterial growth rates on the front end of the aeration basins DO concentrations of >8 mg/L or more may be needed to discourage Low DO filaments.