Yeast are generally rare in biological wastewater treatment processes, but may enter the treatment processes through the influent, sludge return side-streams, or...
Entries Tagged Laboratory (Lab)
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Bug of the Month: How to Reduce Beggiatoa Filament Growth
Eickelboom morphotype Beggiatoa is readily recognizable due to its large diameter (2-4 µm) and its slow-gliding motility. Sometimes septa (cross-walls) may be...
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Arizona Taps ASU to Lead Water Innovation Initiative
Arizona State University and Arizona Gov. Doug Ducey recently announced that the university will lead a multiyear Arizona Water Innovation Initiative to...
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Bug of the Month: Suctoria, the Vicious Killers Within Wastewater Microbiology
A suctorian is a protozoa from the order Suctoria, which includes both saltwater and freshwater organisms. Suctoria are widely distributed in nature and...
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Bug of the Month: The Mysterious History of Haliscomenobacter Hydrossis
The Eickelboom filament morphotype commonly recognized as Haliscomenobacter hydrossis has a long and somewhat mysterious history.
Its recognized growth cause has changed from...
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Bug of the Month: Nostocoida Limicola and Filamentous Bulking
Nostocoida limicola filament types are commonly associated with filamentous bulking in biological wastewater treatment systems throughout the world.
Literature such as the 3rd...
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Bug of the Month: Sludge Bulking and Filament Type 021N
Eickelboom 021N filament types are commonly recognized to cause and contribute to sludge bulking in industrial and municipal wastewater treatment facilities.
The morphological characteristics...
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Bug of the Month: Glycogen-Accumulating Organisms and Enhanced Biological Phosphorus Removal
Glycogen-accumulating organisms (GAOs) are common microorganism phenotypes observed in wastewater treatment processes. Through microscopy, traditional GAO phenotypes may be viewed as “grape-like”...
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Bug of the Month: Eickelboom Filament 0675/0041 and Bulking Events
In recent literature Eickelboom filament type 0675 and type 0041 have been combined as a single filamentous bacteria morphoptype. Note that the...
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Sewage Surveillance System Detects UK Variant of COVID-19 in Southeast Michigan
A sewage surveillance program installed at the City of Warren, Michigan, and Oakland University housing recently detected the UK variant of COVID-19...
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Bug of the Month: Nematodes and Wastewater Treatment Plants
Nematodes are a metazoan commonly found in wastewater treatment processes in small numbers. It is believed that nematodes typically enter wastewater treatment...
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Bug of the Month: What Spirochaetes Indicate About Your Treatment Facility
Spirochaetes are a phylotype commonly recognized in wastewater biological processes that are associated with high organic acid concentrations. Spirochaetes are recognized by...
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Bug of the Month: Zoogloea, the Glue of Floc Formation
Zoogloea bacteria are a morphotype/phenotype of bacteria that are commonly viewed within flocs in wastewater treatment processes that are large producers of...
Editorial
Many people helped Shelly Higdon advance in her career. Now she takes time to pay it forward.
What does a career spanning more than three decades in one place look like? Ask Michele “Shelly” Higdon, laboratory manager for the Shelbyville (Indiana)...



















