Laboratory (Lab) Articles

The microorganism morphotype description for this month’s feature has been recognized as the Thiopedia morphotype by Dr. Michael Richard and Dr. David...

Yeast are generally rare in biological wastewater treatment processes, but may enter the treatment processes through the influent, sludge return side-streams, or...

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...

Arizona State University and Arizona Gov. Doug Ducey recently announced that the university will lead a multiyear Arizona Water Innovation Initiative to...

A suctorian is a protozoa from the order Suctoria, which includes both saltwater and freshwater organisms. Suctoria are widely distributed in nature and...

The Eickelboom filament morphotype commonly recognized as Haliscomenobacter hydrossis has a long and somewhat mysterious history. Its recognized growth cause has changed from...

Nostocoida limicola filament types are commonly associated with filamentous bulking in biological wastewater treatment systems throughout the world. Literature such as the 3rd...

Eickelboom 021N filament types are commonly recognized to cause and contribute to sludge bulking in industrial and municipal wastewater treatment facilities. The morphological characteristics...

Glycogen-accumulating organisms (GAOs) are common microorganism phenotypes observed in wastewater treatment processes. Through microscopy, traditional GAO phenotypes may be viewed as “grape-like”...

In recent literature Eickelboom filament type 0675 and type 0041 have been combined as a single filamentous bacteria morphoptype. Note that the...

A sewage surveillance program installed at the City of Warren, Michigan, and Oakland University housing recently detected the UK variant of COVID-19...

Nematodes are a metazoan commonly found in wastewater treatment processes in small numbers. It is believed that nematodes typically enter wastewater treatment...

Spirochaetes are a phylotype commonly recognized in wastewater biological processes that are associated with high organic acid concentrations. Spirochaetes are recognized by...

Zoogloea bacteria are a morphotype/phenotype of bacteria that are commonly viewed within flocs in wastewater treatment processes that are large producers of...