Changes of biomass and bacterial communities in biological activated carbon filters for drinking water treatment

Liao, Xiaobin; Chen, Chao; Wang, Zhao; Wan, Rui; Chang, Chih‐Hsiang; Zhang, Xiaojian; Xie, Shuguang

doi:10.1016/j.procbio.2012.12.016

Cited by 102 publications

(51 citation statements)

References 45 publications

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“…Moreover, in the last GAC sampling point before leaving the BAC system, Betaproteobacteria and Actinobacteria were not detected or detected in very low abundance (Liao et al 2013). The BAC filtration system was the same as that used in this study.…”

Section: Bacterial Community Structuresmentioning

confidence: 98%

“…Based on the significant difference between bacterial communities in raw water and on BAC, Soonglerdsongpha et al (2011) suggested that bacterial community structure changed along the BAC filtration process. Previous studies showed the shift of bacterial community structure inside BAC systems (Liao et al 2012(Liao et al , 2013) and granular activated carbon-sand dual media filter (Feng et al 2013a). However, an earlier work using culture-dependent method indicated that BAC filtration did not change the nature of the bacterial populations associated with drinking water (Burlingame et al 1986).…”

Section: Bacterial Community Structuresmentioning

confidence: 99%

“…A recent study indicated Alphaproteobacteria and Acidobacteria were the largest two bacterial groups inside a downflow BAC filtration system (Liao et al 2013). Moreover, in the last GAC sampling point before leaving the BAC system, Betaproteobacteria and Actinobacteria were not detected or detected in very low abundance (Liao et al 2013).…”

Section: Bacterial Community Structuresmentioning

confidence: 99%

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Bacterial community change through drinking water treatment processes

Liao

Chen

Wang

et al. 2014

Int. J. Environ. Sci. Technol.

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The microbiological quality of drinking water has aroused increasing attention due to potential public health risks. Knowledge of the bacterial ecology in the effluents of drinking water treatment units will be of practical importance. However, the bacterial community in the effluents of drinking water filters remains poorly understood. The changes of the density of viable heterotrophic bacteria and bacterial populations through a pilot-scale drinking water treatment process were investigated using heterotrophic plate counts and clone library analysis, respectively. The pilot-scale treatment process was composed of preozonation, rapid mixing, flocculation, sedimentation, sand filtration postozonation, and biological activated carbon (BAC) filtration. The results indicated that heterotrophic plate counts decreased dramatically through the drinking water treatment processes. Clone library analysis indicated the significant change of bacterial community structure through the water treatment processes. Betaproteobacteria was dominant in raw water, the sand filter effluent and the BAC filter effluent. This work could provide some new insights on drinking water microbial ecology.

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Section: Bacterial Community Structuresmentioning

confidence: 98%

Section: Bacterial Community Structuresmentioning

confidence: 99%

Section: Bacterial Community Structuresmentioning

confidence: 99%

See 1 more Smart Citation

Bacterial community change through drinking water treatment processes

Liao

Chen

Wang

et al. 2014

Int. J. Environ. Sci. Technol.

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“…Previous studies proved that Hydrogenophaga are capable of degrading a variety of environmental organic pollutants [67]. It is also known that Flavobacterium, Rhodobacter, and Sphingopyxis in abundant taxa with relatively higher abundance in moderate-anthropogenic-disturbance lakes are able to biodegrade many environmental organic compounds [68][69][70]. Filimonas in rare taxa, presenting higher relative abundance in high-anthropogenic-disturbance lakes, are involved in carbohydrate degradation and can act as a carbohydrate degrader in diverse environments [71].…”

Section: Alpha Diversity and Community Composition Of Abundant And Ramentioning

confidence: 99%

Abundant and Rare Bacterioplankton in Freshwater Lakes Subjected to Different Levels of Tourism Disturbances

Jiao

Zhao

Huang

et al. 2018

Water

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Anthropogenic disturbances have a negative impact on lake ecosystems, such as water environmental degradation. Bacterioplankton communities are essential components in lakes and consist of a few abundant species and several rare taxa. However, little is known about the community diversity and composition of abundant and rare bacterioplankton subjected to different levels of anthropogenic disturbances. In this study, water samples were collected from twelve freshwater lakes located around the city of Nanjing, China. Both Illumina MiSeq sequencing and multivariate statistical analysis were employed to determine the bacterioplankton community composition and its relation to environmental variables. The results indicated that tourism disturbances (mostly sewage discharge and tourist activities) altered the community structure of both abundant and rare bacterioplankton by changing water physicochemical characteristics. Alpha diversity of both abundant and rare taxa did not differ among different anthropogenic disturbance lakes (p > 0.05). Rare bacterial taxa possessed higher alpha diversity than abundant taxa, though rare taxa occupied a tiny portion of abundance (4.5%). Redundancy analysis demonstrated that dissolved organic carbon (DOC) was the most significant correlation variable for constraining the variation of abundant taxa, whereas total phosphorus (TP), ammonium nitrogen (NH 4 + -N), and chlorophyll-a (Chl-a) were the most dominant environmental factors constraining the rare taxa, indicating abundant and rare taxa may have different ecological niches.

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“…(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.

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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.

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Changes of biomass and bacterial communities in biological activated carbon filters for drinking water treatment

Cited by 102 publications

References 45 publications

Bacterial community change through drinking water treatment processes

Bacterial community change through drinking water treatment processes

Abundant and Rare Bacterioplankton in Freshwater Lakes Subjected to Different Levels of Tourism Disturbances

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

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