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题名: Comparative evaluation of total phosphorus removal performances for treatment of domestic and secondary wastewater using integrated vertical-flow constructed wetlands: two years' experience
作者: Chang, Jun-jun1, 2; Wu, Su-qing2, 3; Zhang, Shi-yang4, 5; Zhang, Sheng-hua1; Liang, Wei2
关键词: Phosphorus removal ; Integrated vertical-flow constructed wetlands (IVCWs) ; Domestic wastewater (DW) ; Secondary wastewater (SW) ; Plant growth
刊名: DESALINATION AND WATER TREATMENT
发表日期: 2015-10-30
DOI: 10.1080/19443994.2014.950343
卷: 56, 期:5, 页:1379-1388
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ; Technology ; Physical Sciences
类目[WOS]: Engineering, Chemical ; Water Resources
研究领域[WOS]: Engineering ; Water Resources
英文摘要: Four small-scale gravel-based integrated vertical-flow constructed wetlands (IVCWs) were established to treat domestic and secondary wastewater (SW) in parallel under two loading rates (LRs) for an operational period of about two years and the total phosphorus (TP) removal performances were investigated and compared. Highly effective TP elimination sustained for about 10d, with remarkable declines followed to relatively stable efficiencies for both types of wastewater. Significant difference of TP removal performance for the two types of wastewater was observed. In period 1, under high LR, the IVCWs performed better when treating domestic wastewater (DW), achieving average removal efficiency and rate of 51.6% and 0.389gm(-2)d(-1), respectively, compared to those of 30.1% and 0.233gm(-2)d(-1) for SW. However, in the operational period 2 fed with a low LR, better TP removal performance was achieved for SW, with reduction efficiency and rate of 41.5% and 0.057gm(-2)d(-1) on average, while the corresponding value for the treatment of DW was just 12.5% and 0.023gm(-2)d(-1). Significant correlations between TP removal efficiency and plant growth detected during this period and better developed vegetation in systems fed with SW might suggest the considerable role of plant growth, which could be influenced by inlet properties, on P retention and lifespan extending of constructed wetland. Gravel-based IVCW could be employed to remove low load of phosphorus and wastewater properties, and plant growth cycle should be taken intoconsideration in future IVCW design and application.
关键词[WOS]: HORIZONTAL SUBSURFACE FLOW ; NUTRIENT REMOVAL ; PILOT ; WASTEWATERS ; RETENTION ; NITROGEN ; MEDIA ; EFFICIENCIES ; VEGETATION ; SYSTEMS
语种: 英语
WOS记录号: WOS:000362845800025
ISSN号: 1944-3994
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内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/27276
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.Yunnan Univ, Res Inst Engn & Technol, Kunming 650091, Peoples R China
2.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
3.Jiangxi Acad Environm Sci, Nanchang 330029, Peoples R China
4.Chinese Acad Fishery Sci, Yangtze River Fisheries Res Inst, Minist Agr China, Key Lab Freshwater Biodivers Conservat, Wuhan 430223, Peoples R China
5.Chinese Acad Fishery Sci, Freshwater Fisheries Res Ctr, Wuxi 214081, Peoples R China
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