Characterization of microbial communities in a granular activated carbon–sand dual media filter for drinking water treatment

Feng, Shuo; Chen, C.; Wang, Q. F.; Zhang, X. J.; Yang, Zhiyu; Xie, Shuguang

doi:10.1007/s13762-013-0188-1

Cited by 41 publications

(31 citation statements)

References 28 publications

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“…The dominance of Proteobacteria has been found in natural wetlands (Ansola et al 2014;Liu et al 2014b), wastewater CW systems (Ansola et al 2014;Bouali et al 2014;Huang et al 2013), and biofilters treating surface water (Feng et al 2013a;Liao et al 2013b). Moreover, a previous study using DGGE analysis also suggested the dominance of proteobacterial organisms in a large-scale CW system Fig.…”

Section: Bacterial Community Structurementioning

confidence: 88%

Influence of substrate type on microbial community structure in vertical-flow constructed wetland treating polluted river water

Guan

Yin²,

et al. 2015

Environ Sci Pollut Res

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Microorganisms attached on the surfaces of substrate materials in constructed wetland play crucial roles in the removal of organic and inorganic pollutants. However, the impact of substrate material on wetland microbial community structure remains unclear. Moreover, little is known about microbial community in constructed wetland purifying polluted surface water. In this study, Illumina high-throughput sequencing was applied to profile the spatial variation of microbial communities in three pilot-scale surface water constructed wetlands with different substrate materials (sand, zeolite, and gravel). Bacterial community diversity and structure showed remarkable spatial variation in both sand and zeolite wetland systems, but changed slightly in gravel wetland system. Bacterial community was found to be significantly influenced by wetland substrate type. A number of bacterial groups were detected in wetland systems, including Proteobacteria, Chloroflexi, Bacteroidetes, Acidobacteria, Cyanobacteria, Nitrospirae, Planctomycetes, Actinobacteria, Firmicutes, Chlorobi, Spirochaetae, Gemmatimonadetes, Deferribacteres, OP8, WS3, TA06, and OP3, while Proteobacteria (accounting for 29.1-62.3 %), mainly composed of Alpha-, Beta-, Gamma-, and Deltaproteobacteria, showed the dominance and might contribute to the effective reduction of organic pollutants. In addition, Nitrospira-like microorganisms were abundant in surface water constructed wetlands.

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Section: Bacterial Community Structurementioning

confidence: 88%

Influence of substrate type on microbial community structure in vertical-flow constructed wetland treating polluted river water

Guan

Yin²,

et al. 2015

Environ Sci Pollut Res

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“…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: 98%

“…Feng et al (2013b) found that Nitrospirae and Alphaproteobacteria were the dominant bacterial groups in a full-scale drinking water biosand filter. Nitrospirae, Alphaproteobacteria, Acidobacteria, and Betaproteobacteria were the dominant groups in a granular activated carbonsand dual media filter for drinking water treatment (Feng et al 2013a). Li et al (2010) found that Betaproteobacteria was the most abundant bacterial group both in bench-scale and pilot-scale BAC reactors.…”

Section: Bacterial Community Structuresmentioning

confidence: 99%

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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“…N-Nitrosamines are a class of highly carcinogenic NDBPs and are commonly detected in drinking water. Drinking water biofilters have been widely used to remove natural and anthropogenic organic matter, inorganic nitrogen compounds and particulates (Feng et al 2013a;Liao et al 2013a;Liu et al 2012a). Biofiltration might be an effective way to minimize the formation of N-nitrosamines in drinking water (Kristiana et al 2013).…”

Section: Introductionmentioning

confidence: 99%

Operational performance, biomass and microbial community structure: impacts of backwashing on drinking water biofilter

Liao

Chen

Zhang

et al. 2014

Environ Sci Pollut Res

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Biofiltration has been widely used to reduce organic matter and control the formation of disinfection by-products in drinking water. Backwashing might affect the biofilters' performance and the attached microbiota on filter medium. In this study, the impacts of backwashing on the removal of dissolved organic carbon (DOC), dissolved organic nitrogen (DON) and N-nitrosamine precursors by a pilot-scale biological activated carbon (BAC) filtration system were investigated. The impacts of backwashing on biomass and microbial community structure of BAC biofilm were also investigated. Phospholipid fatty acid (PLFA) analysis showed that backwashing reduced nearly half of the attached biomass on granular activated carbon (GAC) particles, followed by a recovery to the pre-backwashing biomass concentration in 2 days after backwashing. Backwashing was found to transitionally improve the removal of DOC, DON and N-nitrosamine precursors. MiSeq sequencing analysis revealed that backwashing had a strong impact on the bacterial diversity and community structure of BAC biofilm, but they could gradually recover with the operating time after backwashing. Phylum Proteobacteria was the largest bacterial group in BAC biofilm. Microorganisms from genera Bradyrhizobium, Hyphomicrobium, Microcystis and Sphingobium might contribute to the effective removal of nitrogenous organic compounds by drinking water biofilter. This work could add some new insights towards the operation of drinking water biofilters and the biological removal of organic matter.

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Characterization of microbial communities in a granular activated carbon–sand dual media filter for drinking water treatment

Cited by 41 publications

References 28 publications

Influence of substrate type on microbial community structure in vertical-flow constructed wetland treating polluted river water

Influence of substrate type on microbial community structure in vertical-flow constructed wetland treating polluted river water

Bacterial community change through drinking water treatment processes

Operational performance, biomass and microbial community structure: impacts of backwashing on drinking water biofilter

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