scholarly journals Microbial community assembly and metabolic function in top layers of slow sand filters for drinking water production

2021 ◽  
Vol 294 ◽  
pp. 126342
Author(s):  
Lihua Chen ◽  
Yujia Zhai ◽  
Ed van der Mark ◽  
Gang Liu ◽  
Walter van der Meer ◽  
...  
Keyword(s):  
Drinking Water ◽  
Microbial Community ◽  
Community Assembly ◽  
Metabolic Function ◽  
Water Production ◽  
Sand Filters ◽  
Drinking Water Production ◽  
Microbial Community Assembly

scholarly journals Density and distribution of nitrifying guilds in rapid sand filters for drinking water production: Dominance of Nitrospira spp.

2017 ◽  
Vol 127 ◽  
pp. 239-248 ◽  
Author(s):  
Karolina Tatari ◽  
Sanin Musovic ◽  
Arda Gülay ◽  
Arnaud Dechesne ◽  
Hans-Jørgen Albrechtsen ◽  
...  
Keyword(s):  
Drinking Water ◽  
Water Production ◽  
Sand Filters ◽  
Drinking Water Production

Microbial community assembly and metabolic function during mammalian corpse decomposition

Science ◽  
2015 ◽  
Vol 351 (6269) ◽  
pp. 158-162 ◽  
Author(s):  
J. L. Metcalf ◽  
Z. Z. Xu ◽  
S. Weiss ◽  
S. Lax ◽  
W. Van Treuren ◽  
...  
Keyword(s):  
Microbial Community ◽  
Community Assembly ◽  
Metabolic Function ◽  
Microbial Community Assembly

scholarly journals Seasonal Dynamics in the Number and Composition of Coliform Bacteria in Drinking Water Reservoirs

2021 ◽  
Author(s):  
Carolin Reitter ◽  
Heike Petzoldt ◽  
Andreas Korth ◽  
Felix Schwab ◽  
Claudia Stange ◽  
...  
Keyword(s):  
Climate Change ◽  
Drinking Water ◽  
Microbial Community ◽  
Water Temperature ◽  
Surface Waters ◽  
Coliform Bacteria ◽  
List Type ◽  
Water Production ◽  
Water Reservoirs ◽  
Drinking Water Production

AbstractWorldwide, surface waters like lakes and reservoirs are one of the major sources for drinking water production, especially in regions with water scarcity. In the last decades, they have undergone significant changes due to climate change. This includes not only an increase of the water temperature but also microbiological changes. In recent years, increased numbers of coliform bacteria have been observed in these surface waters. In our monitoring study we analyzed two drinking water reservoirs (Klingenberg and Kleine Kinzig Reservoir) over a two-year period in 2018 and 2019. We detected high numbers of coliform bacteria up to 2.4 x 104 bacteria per 100 ml during summer months, representing an increase of four orders of magnitude compared to winter. Diversity decreased to one or two species that dominated the entire water body, namely Enterobacter asburiae and Lelliottia spp., depending on the reservoir. Interestingly, the same, very closely related strains have been found in several reservoirs from different regions. Fecal indicator bacteria Escherichia coli and enterococci could only be detected in low concentrations. Furthermore, fecal marker genes were not detected in the reservoir, indicating that high concentrations of coliform bacteria were not due to fecal contamination. Microbial community revealed Frankiales and Burkholderiales as dominant orders. Enterobacterales, however, only had a frequency of 0.04% within the microbial community, which is not significantly affected by the extreme change in coliform bacteria number. Redundancy analysis revealed water temperature, oxygen as well as nutrients and metals (phosphate, manganese) as factors affecting the dominant species. We conclude that this sudden increase of coliform bacteria is an autochthonic process that can be considered as a mass proliferation or “coliform bloom” within the reservoir. It is correlated to higher water temperatures in summer and is therefore expected to occur more frequently in the near future, challenging drinking water production.HighlightsColiform bacteria proliferate in drinking water reservoirs to values above 104 per 100 mlThe genera Lelliottia and Enterobacter can form these “coliform blooms”Mass proliferation is an autochthonic process, not related to fecal contaminationsIt is related to water temperature and appears mainly in summerIt is expected to occur more often in future due to climate changeGraphical abstract

scholarly journals Copper deficiency can limit nitrification in biological rapid sand filters for drinking water production

2016 ◽  
Vol 95 ◽  
pp. 280-288 ◽  
Author(s):  
Florian B. Wagner ◽  
Peter Borch Nielsen ◽  
Rasmus Boe-Hansen ◽  
Hans-Jørgen Albrechtsen
Keyword(s):  
Drinking Water ◽  
Copper Deficiency ◽  
Water Production ◽  
Sand Filters ◽  
Drinking Water Production

Giardia and Cryptosporidium in backwash water from rapid sand filters used for drinking water production

1996 ◽  
Vol 284 (1) ◽  
pp. 107-114 ◽  
Author(s):  
Panagiotis Karanis ◽  
Dirk Schoenen ◽  
Hanns Martin Seitz
Keyword(s):  
Drinking Water ◽  
Water Production ◽  
Sand Filters ◽  
Drinking Water Production

scholarly journals Copper-Induced Stimulation of Nitrification in Biological Rapid Sand Filters for Drinking Water Production by Proliferation of Nitrosomonas spp.

2019 ◽  
Vol 53 (21) ◽  
pp. 12433-12441 ◽  
Author(s):  
Florian B. Wagner ◽  
Vaibhav Diwan ◽  
Arnaud Dechesne ◽  
S. Jane Fowler ◽  
Barth F. Smets ◽  
...  
Keyword(s):  
Drinking Water ◽  
Water Production ◽  
Sand Filters ◽  
Drinking Water Production ◽  
Stimulation Of

scholarly journals Exploring groundwater microbial communities for natural attenuation potential of micropollutants

2019 ◽  
Author(s):  
Andrea Aldas-Vargas ◽  
Ernestina Hauptfeld ◽  
Gerben D.A. Hermes ◽  
Siavash Atashgahi ◽  
Hauke Smidt ◽  
...  
Keyword(s):  
Drinking Water ◽  
Microbial Community ◽  
Groundwater Quality ◽  
Microbial Communities ◽  
Natural Attenuation ◽  
Rrna Gene ◽  
Water Production ◽  
Groundwater Geochemistry ◽  
Geochemical Parameters ◽  
Drinking Water Production

AbstractGroundwater is a key water resource, with 45.7% of all drinking water globally being extracted from groundwater. Maintaining good groundwater quality is thus crucial to secure drinking water. Micropollutants, such as pesticides, threaten groundwater quality which can be mitigated by biodegradation. Hence, exploring microbial communities in aquifers used for drinking water production is essential for understanding micropollutants biodegradation capacity. This study aimed at understanding the interaction between groundwater geochemistry, pesticide presence, and microbial communities in aquifers used for drinking water production. Two groundwater monitoring wells located in the northeast of The Netherlands and at 500 m distance from each other were sampled in 2014, 2015, 2016 and 2018. In both wells, water was extracted from five discrete depths ranging from 13 to 54 m and used to analyze geochemical parameters, pesticide concentrations and microbial community dynamics using 16S rRNA gene sequencing and qPCR. Groundwater geochemistry was stable throughout the study period and pesticides were heterogeneously distributed at low concentrations (μg/L range). Integration of the groundwater chemical and microbial data showed that geochemical parameters and pesticides exerted selective pressure on microbial communities. Furthermore, microbial communities in both wells showed a more similar composition in the deeper part of the aquifer as compared to shallow sections, suggesting vertical differences in hydrological connection. This study provides initial insights into microbial community composition and distribution in groundwater systems in relation to geochemical parameters. This information can contribute for the implementation of bioremediation technologies that guarantee safe drinking water production from clean aquifers.Importance sectionGroundwater is an essential source of drinking water. However, its quality is threathened by the presence of micropollutants. Certain microorganisms are capable of degrading micropollutants. However, groundwater is an unexplored environment, where the biodegradation potential of naturally-present microorganisms is unknown. We thus explore how groundwater microbial ecology in shaped by groundwater composition, namely geochemical parameters and micropollutants. This is a first step towards understanding which microbial communities and environmental conditions support natural attenuation of micropollutants. This study thus provides a first step towards developing in situ bioremediation strategies to remove micropollutants from groundwater used for drinking water production.

Molecular characterization of microbial populations in groundwater sources and sand filters for drinking water production

2009 ◽  
Vol 43 (1) ◽  
pp. 182-194 ◽  
Author(s):  
W.W.J.M. de Vet ◽  
I.J.T. Dinkla ◽  
G. Muyzer ◽  
L.C. Rietveld ◽  
M.C.M. van Loosdrecht
Keyword(s):  
Drinking Water ◽  
Molecular Characterization ◽  
Microbial Populations ◽  
Water Production ◽  
Sand Filters ◽  
Drinking Water Production
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