Reference Library

Potential cause: High SRT

High Sludge Retention Time (SRT) Values: SRT is a calculation of the theoretical time the average microbe remains in a biological wastewater treatment process. There are two recognized filamentous bacteria morphotypes that are correlated with elevated SRT values. Note that low food to microorganism ratio (low F/M) often but does not always accompany high SRT.

Microbes Autocomplete
or
dropdown microbe

Type 1851 Filament Morphotype

Diameter:
.8-1 µm
Dimensions
0.8 x 1.4 µm
type 1851-like filaments cropped from 1000x phase contrast
type 1851-like filaments cropped from 1000x phase contrast
Shape:
Rectangles
Septa:
Yes - often difficult to see
Sulfur Granules:
No
Sheath:
Yes
Branching:
Yes

Description

Often forms "bundles/twisted ropes". Often has attached growth.

Filament Type 0041/0675 Morphotype

Diameter:
1.0-2.2 µm
Dimensions
1.0-2.0 x 2.0-3.0 µm
Shape:
Square
Septa:
Yes - Visible
Sulfur Granules:
No
Sheath:
Yes
Branching:
Yes

Description

“Grainy” appearance. Often has attached growth.

crossmenuchevron-down linkedin facebook pinterest youtube rss twitter instagram facebook-blank rss-blank linkedin-blank pinterest youtube twitter instagram