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题名: Comparative study of microbial community structure in integrated vertical-flow constructed wetlands for treatment of domestic and nitrified wastewaters
作者: Chang, Jun-jun1, 2; Wu, Su-qing1, 3; Liang, Kang1, 4; Wu, Zhenbin1; Liang, Wei1
关键词: Integrated vertical-flow constructed wetlands (IVCWs) ; Fatty acidmethyl ester (FAME) ; Signature FAs ; Microbial community ; Domesticwastewater (DW) ; Nitrified wastewater (NW) ; Water quality characteristics
刊名: ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
发表日期: 2015-03-01
DOI: 10.1007/s11356-014-3594-0
卷: 22, 期:5, 页:3518-3527
收录类别: SCI ; ISTP
文章类型: Article
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
类目[WOS]: Environmental Sciences
研究领域[WOS]: Environmental Sciences & Ecology
英文摘要: Microbial processes play a vital important role in the removal of contaminants in constructed wetland (CW). However, the microbial physiology and community structure can be influenced by environmental conditions. In this study, four pilot-scale integrated vertical-flow constructed wetlands (IVCWs) were employed to treat domestic and nitrified wastewaters. The microbial properties, along with their response to wastewater quality characteristics and seasonal variation, were determined. The results showed higher Shannon-Weiner diversity (H) and evenness (E) index of fatty acids (FAs), and relative abundances of signature FAs in down-flow cells and in the systems fed with domestic wastewater (DW). The relative abundances of fungi and gram-negative and aerobic bacteria were greater in up-flow cells. The dominant anaerobic bacteria found in most cells might be accounted for the prevailing anaerobic environment within the wetland beds, which could mean that the system fed with nitrified wastewater (NW) should perform better in nitrogen removal. The redundancy analysis (RDA) showed that pollutant concentrations, especially organic matter, influence the FA compositions greatly, and the most significant difference of microbial community structures was detected in down-flow cells fed with DW and up-flow ones with NW. The branched FAs, which could be used to represent anaerobic bacteria, were observed in down-flow cells treating DW and had a significant positive correlation with chemical oxygen demand (COD) concentration, probably suggesting the important role of anaerobic bacteria in organic matter degradation in the IVCWs. Seasonal variation, however, did not greatly influence the microbial community structure in the IVCWs.
关键词[WOS]: FATTY-ACID PATTERNS ; WASTE-WATER ; TREATMENT PERFORMANCE ; EUTROPHIC BAYS ; SOIL ; BIOMASS ; LIPOPOLYSACCHARIDES ; PHOSPHOLIPIDS ; SEDIMENTS ; PROFILES
语种: 英语
WOS记录号: WOS:000350331300031
ISSN号: 0944-1344
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/27113
Appears in Collections:水环境工程研究中心_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
2.Yunnan Univ, Res Inst Engn & Technol, Kunming 650091, Peoples R China
3.Jiangxi Acad Environm Sci, Nanchang 330029, Peoples R China
4.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
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