Effect of ultrasonic frequency on the bacterial community structure during biofouling formation in microfiltration membrane bioreactors for wastewater treatment

2020 ◽  
Vol 155 ◽  
pp. 105102
Author(s):  
Alfonso Rodríguez-Calvo ◽  
Jesus Gonzalez-Lopez ◽  
Luz Marina Ruiz ◽  
Miguel Ángel Gómez-Nieto ◽  
Barbara Muñoz-Palazon
Keyword(s):  
Wastewater Treatment ◽  
Community Structure ◽  
Bacterial Community ◽  
Bacterial Community Structure ◽  
Membrane Bioreactors ◽  
Ultrasonic Frequency ◽  
Microfiltration Membrane

scholarly journals Comparative analysis of the composition of bacterial communities from two constructed wetlands for municipal and swine wastewater treatment

2009 ◽  
Vol 8 (1) ◽  
pp. 147-157 ◽  
Author(s):  
Paula Arroyo ◽  
Gemma Ansola ◽  
Ivan Blanco ◽  
Patricia Molleda ◽  
Estanislao de Luis Calabuig ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Community Structure ◽  
Bacterial Community ◽  
Bacterial Communities ◽  
Bacterial Community Structure ◽  
Typha Latifolia ◽  
Treatment System ◽  
Swine Wastewater ◽  
Wastewater Treatment System ◽  
Wastewater Treatment Systems

This work provides information about bacterial community structure in natural wastewater treatment systems treating different types of wastewater. The diversity and composition of bacterial communities associated with the rhizosphere of Typha latifolia and Salix atrocinerea were studied and compared among two different natural wastewater treatment systems, using the direct sequencing of the 16S ribosomal RNA codifying genes. Phylogenetic affiliations of the bacteria detected allowed us to define the main groups present in these particular ecosystems. Moreover, bacterial community structure was studied through two diversity indices. Ten identified and five non-identified phyla were found in the samples; the phylum Proteobacteria was the predominant group in the four ecosystems. The results showed a bacterial community dominated by beta-proteobacteria and a lower diversity value in the swine wastewater treatment system. The municipal wastewater treatment system presented a high diverse community in both macrophytes (Typha latifolia and Salix atrocinerea), with gamma-proteobacteria and alpha-proteobacteria, respectively, as the most abundant groups.

Bacterial Community Structure in Geographically Distributed Biological Wastewater Treatment Reactors

2010 ◽  
Vol 44 (19) ◽  
pp. 7391-7396 ◽  
Author(s):  
Siqing Xia ◽  
Liang Duan ◽  
Yonghui Song ◽  
Jixiang Li ◽  
Yvette M. Piceno ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Community Structure ◽  
Bacterial Community ◽  
Bacterial Community Structure ◽  
Biological Wastewater Treatment ◽  
Geographically Distributed

scholarly journals Analysis of Bacterial Community Structure of Activated Sludge from Wastewater Treatment Plants in Winter

2018 ◽  
Vol 2018 ◽  
pp. 1-8 ◽  
Author(s):  
Shuang Xu ◽  
Junqin Yao ◽  
Meihaguli Ainiwaer ◽  
Ying Hong ◽  
Yanjiang Zhang
Keyword(s):  
Wastewater Treatment ◽  
Community Structure ◽  
Bacterial Community ◽  
Activated Sludge ◽  
Bacterial Community Structure ◽  
Redundancy Analysis ◽  
Wastewater Treatment Plants ◽  
Effluent Treatment ◽  
Autonomous Region ◽  
Sludge Bulking

Activated sludge bulking is easily caused in winter, resulting in adverse effects on effluent treatment and management of wastewater treatment plants. In this study, activated sludge samples were collected from different wastewater treatment plants in the northern Xinjiang Uygur Autonomous Region of China in winter. The bacterial community compositions and diversities of activated sludge were analyzed to identify the bacteria that cause bulking of activated sludge. The sequencing generated 30087–55170 effective reads representing 36 phyla, 293 families, and 579 genera in all samples. The dominant phyla present in all activated sludge were Proteobacteria (26.7–48.9%), Bacteroidetes (19.3–37.3%), Chloroflexi (2.9–17.1%), and Acidobacteria (1.5–13.8%). Fifty-five genera including unclassified_f_Comamonadaceae, norank_f_Saprospiraceae, Flavobacterium, norank_f_Hydrogenophilaceae, Dokdonella, Terrimonas, norank_f_Anaerolineaceae, Tetrasphaera, Simplicispira, norank_c_Ardenticatenia, and Nitrospira existed in all samples, accounting for 60.6–82.7% of total effective sequences in each sample. The relative abundances of Saprospiraceae, Flavobacterium, and Tetrasphaera with the respective averages of 12.0%, 8.3%, and 5.2% in bulking sludge samples were higher than those in normal samples. Filamentous Saprospiraceae, Flavobacterium, and Tetrasphaera multiplied were the main cause for the sludge bulking. Redundancy analysis (RDA) indicated that influent BOD5, DO, water temperature, and influent ammonia had a distinct effect on bacterial community structures.

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