Filamentous Bacteria in Activated Sludge: Current Taxonomic Status and Ecology

Abstract

Methods for the Detection of Filamentous Bacteria Involved in Sludge Bulking or Foaming Isolation and Cultivation of Filamentous Bacteria Involved in Sludge Bulking or Foaming Taxonomy of Filamentous Bacteria Causing Foaming and Bulking Problems in the Activated Sludge Process Filaments Affiliated with the β‐Subclass of the Proteobacteria Filaments Affiliated with the γ‐Subclass of Proteobacteria Flexibacter Cytophaga Bacteroides Cluster Chloroflexus Subdivision Other Filamentous Organisms

Enhanced carbon capture biosorption through process manipulation

“…belong to the CFB phylum. Although previous studies did report that at least three types of filaments that occurred in activated sludge belong to the CFB phylum (Kämpfer and Wagner, 2003), and two out of five filamentous strains isolated by Seviour et al (1997) were identified as Chryseobacterium-like organisms belonging to the CFB phylum -there was no definitive indication that the two strains detected in the DGGE were actually filaments. One strain of Brevundimonas vesicularis isolated from paper machine slime deposit was able to produce polysaccharide (Rättö et al, 2005), and one strain was able to synthesis PHA using acid-hydrolyzed sawdust as carbon source (Silva et al, 2007).…”

A quantitative method for measuring the mass concentration of the filamentous bacterium Type 021N in activated sludge using fluorescence in situ hybridization

“…More than 30 different morphotypes of these filamentous bacteria have been described (Eikelboom 1975), based on their morphological characteristics, but it is clear now that a single morphotype may contain several phylogenetically different bacteria (Kämpfer and Wagner 2002). Some of these filaments have been cultured and their phylogeny determined (Seviour and Blackall 1999; Kämpfer and Wagner 2002). Consequently, 16S rRNA targeted probes are now available for the in situ detection of some of these filaments using fluorescence in situ hybridization (FISH) (Kämpfer and Wagner 2002).…”

“…Some of these filaments have been cultured and their phylogeny determined (Seviour and Blackall 1999; Kämpfer and Wagner 2002). Consequently, 16S rRNA targeted probes are now available for the in situ detection of some of these filaments using fluorescence in situ hybridization (FISH) (Kämpfer and Wagner 2002).…”

“…Filamentous bacteria are responsible for the serious operational problems of bulking and foaming in activated sludge plants worldwide, where separation of the solid and liquid phases, upon which the success of the process depends (Jenkins et al 1993;Seviour and Blackall 1999), is disrupted. More than 30 different morphotypes of these filamentous bacteria have been described (Eikelboom 1975), based on their morphological characteristics, but it is clear now that a single morphotype may contain several phylogenetically different bacteria (Kämpfer and Wagner 2002). Some of these filaments have been cultured and their phylogeny determined (Seviour and Blackall 1999;Kämpfer and Wagner 2002).…”

“…1993; Seviour and Blackall 1999), is disrupted. More than 30 different morphotypes of these filamentous bacteria have been described (Eikelboom 1975), based on their morphological characteristics, but it is clear now that a single morphotype may contain several phylogenetically different bacteria (Kämpfer and Wagner 2002). Some of these filaments have been cultured and their phylogeny determined (Seviour and Blackall 1999; Kämpfer and Wagner 2002).…”