Reference Library

Potential cause: FOG

Fats, Oils, Grease (FOG): There are 3 recognized filamentous bacteria morphotypes that may be correlated to the presence of FOG. Generally, when FOG is exposed to septicity, long chain fatty acids may be formed, which are often additionally advantageous for these filaments.

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Actinomycetes-Mycolata

Diameter:
.8-1.2 µm
Dimensions
1.0 x 1.0-2.0 µm
Actinomycetes-Mycolata cropped from 1000x Neisser (1)
Actinomycetes-Mycolata cropped from 1000x Neisser (1)
Shape:
Variable
Septa:
Yes - most species Septa is visible
Sulfur Granules:
No
Sheath:
No
Branching:
No

Description

“True branching”. Almost all species in wastewater stain gram positive when healthy.

Microthrix filament morphotype

Diameter:
.5-.8 µm
Dimensions
N/A
Shape:
Individual cell not visible
Septa:
Yes- but very rarely seen septa.
Sulfur Granules:
No
Sheath:
No
Branching:
No

Description

Gram positive. Often has Neisser positive granules.

Filament Type 1863 Morphotype

Diameter:
.8-1.0 µm
Dimensions
.8-1.0 x 1.0-1.5 µm
Shape:
OvalsRods
Septa:
Yes - visible
Sulfur Granules:
No
Sheath:
No
Branching:
No

Description

Usually dispersed. “Chain of cells” appearance.

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