Investigation of nitrogen pollutants transformation and its pathways along the long-distance prechlorinated raw water distribution system

Shen, Zhiyuan; Chen, Wei; Xu, Hang; Zhang, Lei; Lin, Changgui; Lin, Tao; Tao, Hui; Mei, Caihua; Lu, Chunhui

doi:10.1016/j.chemosphere.2020.126833

Cited by 9 publications

(2 citation statements)

References 66 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The use of disinfection, such as chlorine and chloramine, in water systems also may influence biofilm community structure. Recently, a study showed that prechlorinated raw water shaped the distinctive characteristic of pipe biofilm communities in raw water distribution systems and had an indirect influence on nitrogen transformation pathways …”

Section: Discussionmentioning

confidence: 99%

“…Recently, a study showed that prechlorinated raw water shaped the distinctive characteristic of pipe biofilm communities in raw water distribution systems and had an indirect influence on nitrogen transformation pathways. 52 Desulfovibrio is one of the widely concerning genera in pipe biofilms. Desulfovibrio as part of sulfate-reducing bacteria (SRB) is commonly observed in an iron-rich environment.…”

Section: ■ Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Biofilm Community Structures and Opportunistic Pathogen Gene Markers in Drinking Water Mains and the Role of Pipe Materials

Tang

Ling

et al. 2021

ACS EST Water

View full text Add to dashboard Cite

Due to the difficulty of sampling, the characteristics of biofilm communities in drinking water mains are still poorly understood. In this study, 13 water mains were collected to investigate the occurrence of opportunistic pathogens, to explore the biofilm community structures, and to decipher the mechanisms of biofilm community assembly. The results showed high frequencies of detection of Legionella pneumophila, Acanthamoeba, and Vermamoeba vermiformis. The number of mycobacterial gene copies in ductile iron pipes (DIPs) was significantly higher than that in cast iron pipes (CIPs), indicating that pipe materials affected colonization by opportunistic pathogens. The biofilm samples were clearly clustered into two groups by pipe materials, highlighting the critical role of the pipe material in shaping biofilm communities. Furthermore, nitrifying bacteria were dominant in DIPs, while denitrifying bacteria were more abundant in CIPs than in DIPs. Overall, this work provides ecological insights into a poorly understood ecosystem.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: ■ Discussionmentioning

confidence: 99%