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Impacts of water treatments on bacterial communities of biofilm and loose deposits in drinking water distribution systems.
Zhang, Yue; Li, Xiaoming; Ren, Anran; Yao, Mingchen; Chen, Chen; Zhang, Haichen; van der Meer, Walter; Liu, Gang.
Afiliación
  • Zhang Y; Key Laboratory of Drinking Water Science and Technology, Research Centre for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing, China; Sanitary Engineering, Department of Water Management, Faculty of Civil Engineering a
  • Li X; Key Laboratory of Drinking Water Science and Technology, Research Centre for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing, China.
  • Ren A; Key Laboratory of Drinking Water Science and Technology, Research Centre for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing, China; Sanitary Engineering, Department of Water Management, Faculty of Civil Engineering a
  • Yao M; Key Laboratory of Drinking Water Science and Technology, Research Centre for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing, China; Sanitary Engineering, Department of Water Management, Faculty of Civil Engineering a
  • Chen C; Beijing Waterworks Group Co., Ltd., Beijing, China.
  • Zhang H; Utrecht University, Heidelberglaan 8, 3584 CS Utrecht, the Netherlands.
  • van der Meer W; Science and Technology, University of Twente, P.O. Box 217, 7500AE Enschede, the Netherlands.
  • Liu G; Key Laboratory of Drinking Water Science and Technology, Research Centre for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing, China; Sanitary Engineering, Department of Water Management, Faculty of Civil Engineering a
Environ Int ; 190: 108893, 2024 Aug.
Article en En | MEDLINE | ID: mdl-39079336
ABSTRACT
Treated drinking water is delivered to customers through drinking water distribution systems (DWDSs). Although studies have focused on exploring the microbial ecology of DWDSs, knowledge about the effects of different water treatments on the bacterial community of biofilm and loose deposits in DWDS is limited. This study assessed the effects of additional treatments on the bacterial communities developed in 10 months' old pilot DWDSs. The results showed a similar bacterial community in the pipe-wall biofilm, which was dominated by Novosphingobium spp. (20-82 %) and Sphingomonas spp. (11-53 %), regardless of the treatment applied. The bacterial communities that were retained in the distribution systems (including pipe-wall biofilm and loose deposits) were similar to the particle-associated bacteria (PAB) in the corresponding supply water. The additional treatments showed clear effects of the removal and/or introduction of particles. The genera Aeromonas spp., Clostridium spp., Legionella spp., and Pseudomonas spp., which contain opportunistic pathogenic species, were only detected among the PAB in ion exchange system. Our study demonstrated that the biofilm community is consistent across treatments, and the contribution from bacteria in loose deposits is important but can be controlled by removing particles. These findings offer more insight into the origin and development of microbial ecology in DWDSs and suggest paths for further research on the possibility of managing the microbial ecology in distribution systems.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Bacterias / Abastecimiento de Agua / Agua Potable / Purificación del Agua / Biopelículas Idioma: En Revista: Environ Int Año: 2024 Tipo del documento: Article Pais de publicación: Países Bajos
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Bacterias / Abastecimiento de Agua / Agua Potable / Purificación del Agua / Biopelículas Idioma: En Revista: Environ Int Año: 2024 Tipo del documento: Article Pais de publicación: Países Bajos