caa a22 4500 605500665 CHVBK 20210128100557.0 cr unu---uuuuu 210128e20150601xx s 000 0 eng 10.1007/s00253-015-6393-8 doi (NATIONALLICENCE)springer-10.1007/s00253-015-6393-8 Study of 16 Portuguese activated sludge systems based on filamentous bacteria populations and their relationships with environmental parameters [Elektronische Daten] [Liliana Araújo dos Santos, Vânia Ferreira, Marta Neto, Maria Pereira, Manuel Mota, Ana Nicolau] A survey in 16 activated sludge wastewater treatment plants (WWTP) was conducted to contribute to the knowledge of the environmental parameters that determine the composition of the filamentous community. A total of 128 samples of mixed liquor from municipal WWTP were collected during 2years, and 22 filamentous morphotypes were identified. The most frequent and abundant filamentous bacteria were, in both cases and by this order, type 0041/0675, type 0092,Microthrix parvicella and 1851, nocardioformsand Haliscomenobacter hydrossis. Concerning dominance, type 1851 was the most frequently dominant morphotype, followed by M. parvicella and types 0092 and 0041/0675. These were also, and by this order, the dominant morphotypes during bulking occurrences. Significant correlations were obtained between the abundance of filamentous bacteria and environmental parameters, but multivariate statistical analysis only confirmed the correlation between type 0092 and Sludge Volume Index (SVI), emphasizing the association of this filament with bulking. The discussion of the results in light of published works was complicated by the random use of terms such as frequency, abundance, and dominance with different and often unclear meanings. This reinforces the need of clarifying these terms when discussing the causes of filamentous overgrowth in WWTP. Springer-Verlag Berlin Heidelberg, 2015 Activated sludge nationallicence Filamentous bacteria nationallicence Environmental parameters nationallicence Correlations nationallicence PCA nationallicence Araújo dos Santos Liliana CEB-Centro de Engenharia Biológica, Universidade do Minho, Campus de Gualtar, 4710-57, Braga, Portugal aut Ferreira Vânia CEB-Centro de Engenharia Biológica, Universidade do Minho, Campus de Gualtar, 4710-57, Braga, Portugal aut Neto Marta CEB-Centro de Engenharia Biológica, Universidade do Minho, Campus de Gualtar, 4710-57, Braga, Portugal aut Pereira Maria CEB-Centro de Engenharia Biológica, Universidade do Minho, Campus de Gualtar, 4710-57, Braga, Portugal aut Mota Manuel CEB-Centro de Engenharia Biológica, Universidade do Minho, Campus de Gualtar, 4710-57, Braga, Portugal aut Nicolau Ana CEB-Centro de Engenharia Biológica, Universidade do Minho, Campus de Gualtar, 4710-57, Braga, Portugal aut Applied Microbiology and Biotechnology Springer Berlin Heidelberg 99/12(2015-06-01), 5307-5316 0175-7598 99:12<5307 2015 99 253 https://doi.org/10.1007/s00253-015-6393-8 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00253-015-6393-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Araújo dos Santos Liliana CEB-Centro de Engenharia Biológica, Universidade do Minho, Campus de Gualtar, 4710-57, Braga, Portugal aut NATIONALLICENCE 700 1- Ferreira Vânia CEB-Centro de Engenharia Biológica, Universidade do Minho, Campus de Gualtar, 4710-57, Braga, Portugal aut NATIONALLICENCE 700 1- Neto Marta CEB-Centro de Engenharia Biológica, Universidade do Minho, Campus de Gualtar, 4710-57, Braga, Portugal aut NATIONALLICENCE 700 1- Pereira Maria CEB-Centro de Engenharia Biológica, Universidade do Minho, Campus de Gualtar, 4710-57, Braga, Portugal aut NATIONALLICENCE 700 1- Mota Manuel CEB-Centro de Engenharia Biológica, Universidade do Minho, Campus de Gualtar, 4710-57, Braga, Portugal aut NATIONALLICENCE 700 1- Nicolau Ana CEB-Centro de Engenharia Biológica, Universidade do Minho, Campus de Gualtar, 4710-57, Braga, Portugal aut NATIONALLICENCE 773 0- Applied Microbiology and Biotechnology Springer Berlin Heidelberg 99/12(2015-06-01), 5307-5316 0175-7598 99:12<5307 2015 99 253