scholarly journals Impact of coagulation–ultrafiltration on long-term pipe biofilm dynamics in a full-scale chloraminated drinking water distribution system

2020 ◽  
Vol 6 (11) ◽  
pp. 3044-3056
Author(s):  
Kristjan Pullerits ◽  
Sandy Chan ◽  
Jon Ahlinder ◽  
Alexander Keucken ◽  
Peter Rådström ◽  
...  
Keyword(s):  
Drinking Water ◽  
Distribution System ◽  
Water Distribution ◽  
Water Distribution System ◽  
Full Scale ◽  
Drinking Water Distribution System ◽  
System P ◽  
Drinking Water Distribution ◽  
Biofilm Community

Introducing coagulation–ultrafiltration removed bacteria from the drinking water but did not impact nitrification, localizing this process to the biofilm community.

scholarly journals Long-Term Bacterial Dynamics in a Full-Scale Drinking Water Distribution System

PLoS ONE ◽  
2016 ◽  
Vol 11 (10) ◽  
pp. e0164445 ◽  
Author(s):  
E. I. Prest ◽  
D. G. Weissbrodt ◽  
F. Hammes ◽  
M. C. M. van Loosdrecht ◽  
J. S. Vrouwenvelder
Keyword(s):  
Drinking Water ◽  
Distribution System ◽  
Water Distribution ◽  
Water Distribution System ◽  
Full Scale ◽  
Drinking Water Distribution System ◽  
Bacterial Dynamics ◽  
Drinking Water Distribution

scholarly journals Bacterial release from pipe biofilm in a full-scale drinking water distribution system

2019 ◽  
Vol 5 (1) ◽  
Author(s):  
Sandy Chan ◽  
Kristjan Pullerits ◽  
Alexander Keucken ◽  
Kenneth M. Persson ◽  
Catherine J. Paul ◽  
...  
Keyword(s):  
Drinking Water ◽  
Distribution System ◽  
Water Distribution ◽  
Water Distribution System ◽  
Full Scale ◽  
Drinking Water Distribution System ◽  
Drinking Water Distribution

scholarly journals Long-Term Succession of Structure and Diversity of a Biofilm Formed in a Model Drinking Water Distribution System

2003 ◽  
Vol 69 (11) ◽  
pp. 6899-6907 ◽  
Author(s):  
Adam C. Martiny ◽  
Thomas M. Jørgensen ◽  
Hans-Jørgen Albrechtsen ◽  
Erik Arvin ◽  
Søren Molin
Keyword(s):  
Drinking Water ◽  
Community Composition ◽  
Distribution System ◽  
Water Distribution ◽  
Water Distribution System ◽  
Single Cells ◽  
Drinking Water Distribution System ◽  
Structural Morphology ◽  
Drinking Water Distribution

ABSTRACT In this study, we examined the long-term development of the overall structural morphology and community composition of a biofilm formed in a model drinking water distribution system with biofilms from 1 day to 3 years old. Visualization and subsequent quantification showed how the biofilm developed from an initial attachment of single cells through the formation of independent microcolonies reaching 30 μm in thickness to a final looser structure with an average thickness of 14.1 μm and covering 76% of the surface. An analysis of the community composition by use of terminal restriction fragment length polymorphisms showed a correlation between the population profile and the age of the sample, separating the samples into young (1 to 94 days) and old (571 to 1,093 days) biofilms, whereas a limited spatial variation in the biofilm was observed. A more detailed analysis with cloning and sequencing of 16S rRNA fragments illustrated how a wide variety of cells recruited from the bulk water initially attached and resulted in a species richness comparable to that in the water phase. This step was followed by the growth of a bacterium which was related to Nitrospira, which constituted 78% of the community by day 256, and which resulted in a reduction in the overall richness. After 500 days, the biofilm entered a stable population state, which was characterized by a greater richness of bacteria, including Nitrospira, Planctomyces, Acidobacterium, and Pseudomonas. The combination of different techniques illustrated the successional formation of a biofilm during a 3-year period in this model drinking water distribution system.

scholarly journals Biofilm bacterial communities and abundance in a full-scale drinking water distribution system in Shanghai

2010 ◽  
Vol 8 (3) ◽  
pp. 593-600 ◽  
Author(s):  
Xiaohui Bai ◽  
Fan Wu ◽  
Binhui Zhou ◽  
Xinghua Zhi
Keyword(s):  
Drinking Water ◽  
Distribution System ◽  
Bacterial Communities ◽  
Water Distribution ◽  
Water Distribution System ◽  
Full Scale ◽  
Community Diversity ◽  
Plate Count ◽  
Drinking Water Distribution System ◽  
Drinking Water Distribution

Community diversity and abundance of biofilms from a full-scale drinking water distribution system in Shanghai were characterized by denaturing gradient gel electrophoresis (DGGE) analysis of 16S rRNA sequences and heterotrophic plate count (HPC), respectively. Bacteria affiliated to the Beta- and Gamma-Proteobacteria were dominating in both in-situ and HPC-culturable bacterial communities. Other bacteria present included members of Alphaproteobacteria, Bacteroides, Actinobacteria, Nitrospirae and Firmicutes. Acidovorax, Ralstonia and Acinetobacter were common species in biofilms. Klebsiella pneumoniae and Enterobacter sp. were detected in the local distribution system. Dissolved organic carbon (DOC), residual disinfectant and temperature were the most important factors influencing both bacterial abundance and composition. HPC for biofilm sample was not correlated with its community diversity.

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