Filamentous bacteria existence in aerobic granular reactors

M. Figueroa, A. Val Del Río, J. L. Campos, R. Méndez, A. Mosquera-Corral

Research output: Contribution to journalArticlepeer-review

60 Scopus citations


Filamentous bacteria are associated to biomass settling problems in wastewater treatment plants. In systems based on aerobic granular biomass they have been proposed to contribute to the initial biomass aggregation process. However, their development on mature aerobic granular systems has not been sufficiently studied. In the present research work, filamentous bacteria were studied for the first time after long-term operation (up to 300 days) of aerobic granular systems. Chloroflexi and Sphaerotilus natans have been observed in a reactor fed with synthetic wastewater. These filamentous bacteria could only come from the inoculated sludge. Thiothrix and Chloroflexi bacteria were observed in aerobic granular biomass treating wastewater from a fish canning industry. Meganema perideroedes was detected in a reactor treating wastewater from a plant processing marine products. As a conclusion, the source of filamentous bacteria in these mature aerobic granular systems fed with industrial effluents was the incoming wastewater.

Original languageEnglish
Pages (from-to)841-851
Number of pages11
JournalBioprocess and Biosystems Engineering
Issue number5
StatePublished - 22 Mar 2015
Externally publishedYes


  • Aerobic granulation
  • Chloroflexi
  • Industrial wastewater
  • Meganema perideroedes
  • Sphaerotilus natans
  • Thiothrix


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