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A: Fungi, Nocardia, and Sphaerotilus Natans are three filamentous bacteria
found in wastewater treatment systems (WWTPs). In small amounts, they
are quite beneficial for the system as they add stability to the floc
structure and keep it from breaking up or shearing. In large amounts,
however, they can wreak havoc.
Fungi are true branching bacteria that, in large concentrations,
indicate a change in pH. Low pH creates excellent conditions
for the increase in fungi which can cause bulking.
Nocardia, another true branching bacteria common
to wastewater activated sludge, has been known to cause extensive damage
to the wasterwater treatment process by producing foam and bulking. It
is also associated with scum formation.
Sphaerotilus Natans is a false branching filamentous bacteria.
The cells cling to each other and form a filament, however, occasionally
cells branch out from the main filament. Those radiating filaments
can cause interference with sludge settling. This filament is usually
found in environments where there is low DO (dissolved oxygen) or low nutrients. Nutrient deficient wastewater can present
with a slime coating.
Q: What Do You Recommend?
A: Working with our products can improve the biological health of your systems.
For especially complex problems, contact us to find our more about our
consulting services.
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