Structure and activity of microbial communities in response to environmental, operational, and design factors in constructed wetlands

Garibay, M. Verduzo; Castillo, Alberto Fernández del; Anda, José de; Senés‐Guerrero, Carolina; Gradilla‐Hernández, Misael Sebastian

doi:10.1007/s13762-021-03719-y

Cited by 28 publications

(10 citation statements)

References 224 publications

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“…Most of the studies have used 16S rRNA gene amplicon sequencing method for microbial characterization as well as to understand the richness, diversity, composition of enriched microbial communities as well as microbial activity and metabolic pathways in the CW systems (Arroyo et al, 2013;Sánchez, 2017). Internal factors (e.g., pH, substrate media composition and their depth, the presence/ absence of vegetation, the quantity and quality of pollutants, availability of organic carbon) and external factors (e.g., ambient temperature and Sun light) could impact the CW microenvironments, and thus change the microbial flora in CW ecosystems (Verduzo Garibay et al, 2021). The dynamics of microbial communities enriched in CW ecosystems treating wastewater and stormwater are briefly described below.…”

Section: Microbial Diversity In Constructed Wetland Systemsmentioning

confidence: 99%

“…In denitrification, nitrate is reduced to nitrogen gas through multiple steps, and the microbial transformation is mediated by denitrifying bacteria (e.g., Denitratisoma, Planctomyces, Magnetospira, Pseudomonas spp. and Dechloromonas) (Verduzo Garibay et al, 2021).…”

Section: Pollutant Removal Mechanismsmentioning

confidence: 99%

“…and/or anaerobic organic degraders (e.g., Methanobacteriales, Methanomicrobiales, Methanosarcinales, etc.) (Verduzo Garibay et al, 2021). The key removal mechanisms for microbial contaminants in CW systems include filtration, adsorption, sedimentation, and natural die-off because of starvation/predation by higher organisms (Wu et al, 2016).…”

Section: Pollutant Removal Mechanismsmentioning

confidence: 99%

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Constructed Wetlands for Reclamation and Reuse of Wastewater and Urban Stormwater: A Review

Biswal

Balasubramanian

2022

Front. Environ. Sci.

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In recent years, increasing attention has been given for reclamation and reuse of water (wastewater and stormwater) in the context of augmenting water supplies. Constructed wetland (CW) systems make use of natural substrates, plants, and microbes for decontamination of wastewater and stormwater. These nature-based water treatment systems are cost-effective and sustainable. This review critically analyzes the recent advances on the application of CW systems for removal of total suspended solids (TSS), various chemical (nutrients including total nitrogen and total phosphorus, heavy metals, and organics) and microbial pollutants (Escherichia coli, enterococci, fecal coliforms, etc.) in wastewater and stormwater. Furthermore, the influence of key factors including CW configurations, substrates, vegetation, ambient temperature/seasonal changes, oxygen levels and hydraulic retention time on the performance of CW systems are discussed. Insights into various pollutant removal mechanisms, microbial diversity and modeling (kinetics, hydrological and mechanistic) are provided. CW systems show good performance for removal of diverse pollutants from wastewater and stormwater. The pollutant removal mechanisms include physical (sedimentation and filtration), chemical (sorption, complexation and precipitation) and biological (biodegradation, microbial transformation and microbial/plant assimilation) processes. The dominant microbial communities enriched in CW systems include nitrifiers, denitrifiers and organic biodegraders. The key knowledge gaps in the development of multifunctional CW systems are highlighted. We believe that this critical review would help urban planners, environmental engineers and managers with implementation of innovative strategies for wastewater and stormwater reclamation and reuse to alleviate water stress in urban areas and to contribute to environmental sustainability. Moreover, this review would help to optimize the performance of CW systems as well as to develop regulatory guidelines for installation, operation and maintenance of CW systems.

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Section: Microbial Diversity In Constructed Wetland Systemsmentioning

confidence: 99%

Section: Pollutant Removal Mechanismsmentioning

confidence: 99%

Section: Pollutant Removal Mechanismsmentioning

confidence: 99%

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Constructed Wetlands for Reclamation and Reuse of Wastewater and Urban Stormwater: A Review

Biswal

Balasubramanian

2022

Front. Environ. Sci.

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“…Although treated samples were more biodiverse, the abundance of more minor bacterial phyla (e.g., Firmicutes, Acidobacteria, Cyanobacteria) were generally below 2% (Figure 3). This increase in biodiversity could be due to several factors, including physical, chemical, and biological treatment processes in the CW, such as filtration, aerobic and anaerobic biodegradation, competition, predation, and plant uptake [61].…”

Section: Community Structure In Raw and Treated Greywatermentioning

confidence: 99%

Occurrence of Antibiotic-Resistant Genes and Bacteria in Household Greywater Treated in Constructed Wetlands

Henderson

Ergas

Ghebremichael

et al. 2022

Water

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There is a growing body of knowledge on the persistence of antibiotic-resistant genes (ARGs) and antibiotic-resistant bacteria (ARB) in greywater and greywater treatment systems such as constructed wetlands (CWs). Our research quantified ARGs (sul1, qnrS, and blaCTXM32), class one integron (intI1), and bacterial marker (16S) in four recirculating vertical flow CWs in a small community in the Negev desert, Israel, using quantitative polymerase chain reaction (qPCR). The greywater microbial community was characterized using 16S rRNA amplicon sequencing. Results show that CWs can reduce ARG in greywater by 1–3 log, depending on the gene and the quality of the raw greywater. Community sequencing results showed that the bacterial community composition was not significantly altered after treatment and that Proteobacteria, Epsilonbacteraeota, and Bacteroidetes were the most dominant phyla before and after treatment. Pseudomonas, Citrobacter, Enterobacter, and Aeromonas were the most commonly identified genera of the extended spectrum beta lactamase (ESBL) colonies. Some of the ESBL bacteria identified have been linked to clinical infections (Acinetobacter nosocomialis, Pseudomonas fulva, Pseudomonas putida, Pseudomonas monteilii, and Roseomonas cervicalis). It is important to monitor intI1 for the potential transfer of ARGs to pathogenic bacteria.

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“…Microbes are essential in the ecosystem service and function under the aquatic environments of CWs. − The CW microbial community compositions are influenced by multiple factors such as influent properties, soil properties, flow configuration, and hydraulic saturation conditions . Previous studies have pointed that microbial communities tend to change along the spatio-temporal gradient in CWs. − Adler and Holliger reported changes in the wastewater composition of the bacterial community.…”

Section: Introductionmentioning

confidence: 99%

Changes in Stoichiometry of Carbon and Nitrogen Trigger Transition in the States of Aquatic Microbiota in Full-Scale Constructed Wetlands

Tong

Zhang

et al. 2022

ACS EST Water

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Constructed wetlands (CWs) are broadly adopted technology for ecosystem service and various types of wastewater treatment. However, their unstable and unpredictable performance hindered their application and promotion. Transitions in microbial community are strong indicators of treatment performance of CWs. The unstable treatment of perturbed CWs is reflected not only in water quality indices but also in altered aquatic microbial composition. A comprehensive analysis was performed to elucidate the multistable microbial communities and their relationship nutrient concentration. Changes in environmental gradients modulate the strength of microbiota feedbacks and, together with molecular ecological networks, provide positive feedbacks for the generation and maintenance of alternative states. The community succession responding to the concentration of carbon and nitrogen was manipulated by stochastic instead of deterministic processes. The relative abundance of stochastic processes increased from state A (73.34%) to state B (89.28%). Furthermore, the high proportion of stochastic events in microbial communities easily trigger the transition to alternative states. To summarize, this study proposes a better understanding of the hypothesis of alternative stable states in the response of ecosystems to nutrient concentration, which could provide a strategy for the stoichiometric regulation of carbon and nitrogen changes along from the inlet to outlet in CWs.

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Structure and activity of microbial communities in response to environmental, operational, and design factors in constructed wetlands

Cited by 28 publications

References 224 publications

Constructed Wetlands for Reclamation and Reuse of Wastewater and Urban Stormwater: A Review

Constructed Wetlands for Reclamation and Reuse of Wastewater and Urban Stormwater: A Review

Occurrence of Antibiotic-Resistant Genes and Bacteria in Household Greywater Treated in Constructed Wetlands

Changes in Stoichiometry of Carbon and Nitrogen Trigger Transition in the States of Aquatic Microbiota in Full-Scale Constructed Wetlands

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