Comparative evaluation of influencing factors on aquaculture wastewater treatment by various constructed wetlands
文献类型： 外文期刊
作者： Zhang, Shiyang 1 ; Ban, Yihui 2 ; Xu, Zhouying 1 ; Cheng, Jing 1 ; Li, Meng 1 ;
作者机构： 1.Wuhan Univ Technol, Sch Civil Engn & Architecture, Wuhan 430070, Peoples R China
2.Chinese Acad Fishery Sci, Minist Agr China, Key Lab Freshwater Biodivers Conservat, Yangtze River Fisheries Res Inst, Wuhan 430223, Peoples R China
3.Wuhan Univ Technol, Sch Chem Chem Engn & Life Sci, Wuhan 430070, Peoples R China
关键词： constructed wetland; multivariate analyses; influencing factors; wetland performance; nitrification-denitrification
期刊名称：ECOLOGICAL ENGINEERING （ 影响因子：4.035； 五年影响因子：4.611 ）
ISSN： 0925-8574
年卷期： 2016 年 93 卷
页码：
收录情况： SCI
摘要： In this work, a long-term observation on fifteen different constructed wetlands covering diverse scales, flow regimes, substrates, plants and operating conditions was obtained and their performance was comparatively assessed by multivariate analyses. The fifteen wetlands were sorted into five categories: i.e. two conventional horizontal flows (CHF), three narrow horizontal flows (NHF), one surface flow (SF), nine submersed vertical flows (SVF) or non-submersed vertical flows (NVF). Results of stepwise regression showed significant linear relationships existed between the various k and measured environment with the latter displaying different impacts on k among all the systems. The significant linear relationships were also evidenced by redundancy analysis (RDA), which demonstrated the existence of multicollinearity among certain influencing factors. Further, variation partitioning revealed that the wetland performance (defined in this study) was mainly affected by structural and operational characteristics, which were also the determinants of redox conditions within subsurface flows. For nitrogen (N) removal, factors which were strongly related to nitrification-denitrification were more closely related to performance compared to other influences for the present systems operated under the specific running conditions. (C) 2016 Elsevier B.V. All rights reserved.
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