Reference Library

Potential cause: Low DO

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.

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Sphaerotilus Filament Morphotype

Diameter:
1.2-2.6 µm
Dimensions
1.6 x 2.5 µm
Sphaerotilus with damaged cells cropped from 1000x phase contrast
Sphaerotilus with damaged cells cropped from 1000x phase contrast
Shape:
Sausage
Septa:
Yes - visible
Sulfur Granules:
No
Sheath:
Yes
Branching:
Yes

Description

Commonly has false branching

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