globalchange  > 气候减缓与适应
DOI: 10.1016/j.watres.2018.05.002
Scopus记录号: 2-s2.0-85053437464
论文题名:
Effects of partially saturated conditions on the metabolically active microbiome and on nitrogen removal in vertical subsurface flow constructed wetlands
作者: Pelissari C.; Guivernau M.; Viñas M.; García J.; Velasco-Galilea M.; Souza S.S.; Sezerino P.H.; Ávila C.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 141
起始页码: 185
结束页码: 195
语种: 英语
英文关键词: Metabolically active microbiome ; Nitrification-aggregates ; Nitrifying-denitrifying prokaryotes ; Nitrogen metabolism ; Partial saturation
Scopus关键词: Aggregates ; Ammonia ; Bacteria ; Biofilms ; Denitrification ; Effluents ; Gene expression ; Nitrification ; Nitrogen oxides ; Nitrogen removal ; Wastewater treatment ; Ammonia oxidizing archaea (AOA) ; Ammonia oxidizing bacteria ; Ammonia-oxidizing prokaryotes ; Microbiome ; Nitrifying-denitrifying prokaryotes ; Nitrogen metabolism ; Partial saturation ; Vertical subsurface-flow constructed wetland ; Wetlands ; constructed wetland ; gene expression ; metabolism ; microbial activity ; nitrification ; nitrogen ; pollutant removal ; prokaryote ; saturation ; subsurface flow ; Nitrobacter ; Nitrosomonadales ; Nitrospira ; Prokaryota ; ammonia ; nitrogen ; archaeon ; bacterium ; denitrification ; genetics ; metabolism ; microflora ; nitrification ; nitrogen cycle ; oxidation reduction reaction ; procedures ; sewage ; waste water ; water pollutant ; wetland ; Ammonia ; Archaea ; Bacteria ; Denitrification ; Microbiota ; Nitrification ; Nitrogen ; Nitrogen Cycle ; Oxidation-Reduction ; Waste Disposal, Fluid ; Waste Water ; Water Pollutants, Chemical ; Wetlands
英文摘要: Nitrogen dynamics and its association to metabolically active microbial populations were assessed in two vertical subsurface vertical flow (VF) wetlands treating urban wastewater. These VF wetlands were operated in parallel with unsaturated (UVF) and partially saturated (SVF) configurations. The SVF wetland exhibited almost 2-fold higher total nitrogen removal rate (5 g TN m−2 d−1) in relation to the UVF wetland (3 g TN m−2 d−1), as well as a low NOx-N accumulation (1 mg L−1 vs. 26 mg L−1 in SVF and UVF wetland effluents, respectively). After 6 months of operation, ammonia oxidizing prokaryotes (AOP) and nitrite oxidizing bacteria (NOB) displayed an important role in both wetlands. Oxygen availability and ammonia limiting conditions promoted shifts on the metabolically active nitrifying community within ‘nitrification aggregates’ of wetland biofilms. Ammonia oxidizing archaea (AOA) and Nitrospira spp. overcame ammonia oxidizing bacteria (AOB) in the oxic layers of both wetlands. Microbial quantitative and diversity assessments revealed a positive correlation between Nitrobacter and AOA, whereas Nitrospira resulted negatively correlated with Nitrobacter and AOB populations. The denitrifying gene expression was enhanced mainly in the bottom layer of the SVF wetland, in concomitance with the depletion of NOx-N from wastewater. Functional gene expression of nitrifying and denitrifying populations combined with the active microbiome diversity brought new insights on the microbial nitrogen-cycling occurring within VF wetland biofilms under different operational conditions. © 2018 Elsevier Ltd
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112652
Appears in Collections:气候减缓与适应

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作者单位: GESAD - Decentralized Sanitation Research Group, Department of Sanitary and Environmental Engineering, Federal University of Santa Catarina, Trindade, Florianópolis, Santa Catarina 88040-900, Brazil; GIRO - Program of Integrated Management of Organic Waste, Institute of Agrifood Research and Technology (IRTA), Torre Marimon, Caldes de Montbui, Barcelona, E-08140, Spain; GEMMA - Environmental Engineering and Microbiology Research Group, Department of Civil and Environmental Engineering, Universitat Politècnica de Catalunya-BarcelonaTech, c/ Jordi Girona, 1-3, Building D1, Barcelona, E-08034, Spain; GMA - Program of Genetics and Animal Breeding, Institute of Agrifood Research and Technology (IRTA), Torre Marimon, Caldes de Montbui, Barcelona, E-08140, Spain; INTELAB - Integrated Technologies Laboratory, Chemical and Food Engineering Department, Federal University of Santa Catarina, Trindade, Florianópolis, Santa Catarina 88040-900, Brazil; ICRA - Catalan Institute for Water Research, Scientific and Technological Park of the University of Girona, Emili Grahit, 101, Girona, E-17003, Spain; AIMEN Technology Center, c/ Relva, 27 A, Torneiros, Porriño, Pontevedra, E-36410, Spain

Recommended Citation:
Pelissari C.,Guivernau M.,Viñas M.,et al. Effects of partially saturated conditions on the metabolically active microbiome and on nitrogen removal in vertical subsurface flow constructed wetlands[J]. Water Research,2018-01-01,141
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