Abundance and composition of indigenous bacterial communities in a multi-step biofiltration-based drinking water treatment plant

Lautenschlager, Karin; Hwang, Chao‐Lung; Ling, Fangqiong; Liu, Wen Tso; Boon, Nico; Köster, Oliver; Egli, Thomas; Hammes, Frederik

doi:10.1016/j.watres.2014.05.035

Cited by 175 publications

(136 citation statements)

References 46 publications

Supporting

Mentioning

111

Contrasting

Unclassified

Order By: Relevance

“…In total 4.91 ± 0.48 Â 10 9 cells/cm 3 and 2.90 ± 0.20 Â 10 9 cells/cm 3 colonised sand and GAC, respectively (Fig. 5b), which is in the same range as previously measured cell concentrations in drinking water biofilters (Lautenschlager et al, 2014;Velten et al, 2007). We also calculated that during the whole duration of the experiment, 1.42 Â 10 11 cells entered the columns and 4.51 Â 10 10 left the system, therefore 9.66 Â 10 10 cells were either retained in the columns or removed from the system.…”

Section: Implications For Water Quality: Cell Removalsupporting

confidence: 86%

“…5b). This was most likely due to higher readily biodegradable substrate availability in this region, a stratification already observed in previous studies (Lautenschlager et al, 2014;Velten et al, 2011), and from the decay of cells filtered onto the columns from the influent. The higher amount of cells detected on the top positions of the filters can be linked with the higher observed alpha biodiversity.…”

Section: Implications For Water Quality: Cell Removalsupporting

confidence: 59%

“…Bacterial communities are present with high abundance in drinking water treatment systems, not only in source waters (10 5 -10 6 cells/ml) (Hammes et al, 2008;Lautenschlager et al, 2014) and at different points of a Drinking Water Treatment Plant (DWTP) (10 5 cells/ml) (Hammes et al, 2008;Vital et al, 2012) but also in the distribution networks (10 4 -10 5 cells/ml) (Hammes et al, 2008;Lautenschlager et al, 2013). Modern DWTPs employ multi-step treatment processes to bring source water up to acceptable drinking water standards.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Medium shapes the microbial community of water filters with implications for effluent quality

et al. 2018

View full text Add to dashboard Cite

a b s t r a c tLittle is known about the forces that determine the assembly of diverse bacterial communities inhabiting drinking water treatment filters and how this affects drinking water quality. Two contrasting ecological theories can help to understand how natural microbial communities assemble; niche theory and neutral theory, where environmental deterministic factors or stochastic factors predominate respectively. This study investigates the development of the microbial community on two common contrasting filter materials (quartz sand and granular activated carbon-GAC), to elucidate the main factors governing their assembly, through the evaluation of environmental (i.e. filter medium type) and stochastic forces (random deaths, births and immigration). Laboratory-scale filter columns were used to mimic a rapid gravity filter; the microbiome of the filter materials, and of the filter influent and effluent, was characterised using next generation 16S rRNA gene amplicon sequencing and flow-cytometry. Chemical parameters (i.e. dissolved organic carbon, trihalomethanes formation) were also monitored to assess the final effluent quality. The filter communities seemed to be strongly assembled by selection rather than neutral processes, with only 28% of those OTUs shared with the source water detected on the filter medium following predictions using a neutral community model. GAC hosted a phylogenetically more diverse community than sand. The two filter media communities seeded the effluent water, triggering differences in both water quality and community composition of the effluents. Overall, GAC proved to be better than sand in controlling microbial growth, by promoting higher bacterial decay rates and hosting less bacterial cells, and showed better performance for putative pathogen control by leaking less Legionella cells into the effluent water.

show abstract

Section: Implications For Water Quality: Cell Removalsupporting

confidence: 86%

Section: Implications For Water Quality: Cell Removalsupporting

confidence: 59%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Medium shapes the microbial community of water filters with implications for effluent quality

et al. 2018

View full text Add to dashboard Cite

show abstract

“…Central metabolic functions in RSFs have previously been assigned to taxa based on their activity in other environments-Nitrosomonas, Nitrospira, Gallionella and Bacillus clades have been proposed as important ammonium (van der Wielen et al, 2009;Lautenschlager et al, 2014), nitrite (Gülay et al, 2014;Albers et al, 2015;LaPara et al, 2015), iron (Søgaard, 2001;de Vet et al, 2012;Li et al, 2013) and manganese oxidizers (Mouchet, 1992;Cerrato et al, 2010), respectively. Ammonia-oxidizing archaea (AOA) have been detected in RSFs at low abundance (van der Wielen et al, 2009;Albers et al, 2015), although in a few examples they outnumbered ammonia-oxidizing bacteria (AOB; Wang et al, 2014;Nitzsche et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Metagenomic analysis of rapid gravity sand filter microbial communities suggests novel physiology ofNitrospiraspp.

et al. 2016

View full text Add to dashboard Cite

Rapid gravity sand filtration is a drinking water production technology widely used around the world. Microbially catalyzed processes dominate the oxidative transformation of ammonia, reduced manganese and iron, methane and hydrogen sulfide, which may all be present at millimolar concentrations when groundwater is the source water. In this study, six metagenomes from various locations within a groundwater-fed rapid sand filter (RSF) were analyzed. The community gene catalog contained most genes of the nitrogen cycle, with particular abundance in genes of the nitrification pathway. Genes involved in different carbon fixation pathways were also abundant, with the reverse tricarboxylic acid cycle pathway most abundant, consistent with an observed Nitrospira dominance. From the metagenomic data set, 14 near-complete genomes were reconstructed and functionally characterized. On the basis of their genetic content, a metabolic and geochemical model was proposed. The organisms represented by draft genomes had the capability to oxidize ammonium, nitrite, hydrogen sulfide, methane, potentially iron and manganese as well as to assimilate organic compounds. A composite Nitrospira genome was recovered, and amo-containing Nitrospira genome contigs were identified. This finding, together with the high Nitrospira abundance, and the abundance of atypical amo and hao genes, suggests the potential for complete ammonium oxidation by Nitrospira, and a major role of Nitrospira in the investigated RSFs and potentially other nitrifying environments.

show abstract

“…(Benner et al 2013;Dorival-Garcia et al 2014;Safari et al 2015). Recently, biological activated carbon (BAC) process coupled with ozonation has been seriously considered as an effective method for treating micropolluted drinking source water (Lautenschlager et al 2014;Liao et al 2013). It should be noted that this combined ozonation-activated carbon process has drawbacks of high capital and operating costs, large space requirement as well as issues associated with daily maintenance.…”

Section: Introductionmentioning

confidence: 99%

Development of attapulgite composite ceramsite/quartz sand double-layer biofilter for micropolluted drinking source water purification

Wang

Zhong

Wan

et al. 2016

Int. J. Environ. Sci. Technol.

View full text Add to dashboard Cite

This study compared start-up and steady-state affecting factors of attapulgite composite ceramsite/quartz sand double-layer biofilter (ACC/QSDLBF) and quartz sand single-layer biofilter (QSSLBF) on micropolluted drinking source water treatment. Results showed that the ACC has suitable pore size distribution in the range of 5-850 nm which is conducive to biofiltration. Turbidity removal efficiency of ACC/QSDLBF was a little lower than QSSLBF, but organic matters and ammonia removal efficiencies of ACC/QSDLBF were much higher than QSSLBF due to biodegradation and nitrification by microorganisms colonizing on the ACC. At stable state, the growth of head loss for ACC/QSDLBF was lower than that of QSSLBF. The complete filtration cycle of ACC/ QSDLBF was 52 h. The total COD Mn removal rate of ACC/QSDLBF was 20.93 %, in which 90 % of removed total COD Mn was achieved at the upper 60 cm of ACC filter layer. The removal of COD Mn decreased from 35.89 to 13.16 % in ACC/QSDLBF when increasing hydraulic loading from 2 to 16 m/h. After analysis of efficient EBCT in ACC/QSDLBF, optimized hydraulic loading was 12 m/ h. These conclusions would be helpful to practical application of ACC as functional material for new construction of waterworks, especially upgrading of existing waterworks treating micropolluted drinking source water.

show abstract

Abundance and composition of indigenous bacterial communities in a multi-step biofiltration-based drinking water treatment plant

Cited by 175 publications

References 46 publications

Medium shapes the microbial community of water filters with implications for effluent quality

Medium shapes the microbial community of water filters with implications for effluent quality

Metagenomic analysis of rapid gravity sand filter microbial communities suggests novel physiology ofNitrospiraspp.

Development of attapulgite composite ceramsite/quartz sand double-layer biofilter for micropolluted drinking source water purification

Contact Info

Product

Resources

About