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学科主题: Environmental Sciences
题名: How Artificial Aeration Improved Sewage Treatment of an Integrated Vertical-Flow Constructed Wetland
作者: Tao, Min1, 2; He, Feng1; Xu, Dong1; Li, Ming1, 2; Wu, Zhenbin1
通讯作者: Tao, M, Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
关键词: integrated vertical-flow constructed wetland (IVCW) ; artificial aeration ; redox potential ; purification effects ; domestic sewage
刊名: POLISH JOURNAL OF ENVIRONMENTAL STUDIES
发表日期: 2010
卷: 19, 期:1, 页:183-191
收录类别: SCI
文章类型: Article
部门归属: [Tao, Min; He, Feng; Xu, Dong; Li, Ming; Wu, Zhenbin] Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China; [Tao, Min; Li, Ming] Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
资助者: National
类目[WOS]: Environmental Sciences
研究领域[WOS]: Environmental Sciences & Ecology
摘要: Artificial aeration was added to an integrated vertical-flow constructed wetland (called aerated IVCW hereafter) for improving water purification performance. The results showed that both oxygen levels and aerobic zones were increased in the wetland substrates. The electric potential (Eh) profiling demonstrated that artificial aeration maintained the pattern of sequential oxic-anoxic-oxic redox zones within the aerated IVCW chambers in winter, while only two oxic-anoxic zones were present inside the non-aerated IVCW in the cold seasons. The nitrification/denitrification processes and organic matter decomposition were enhanced by artificial aeration since the removal efficiency of NH4--N and BOD5 were significantly improved in all seasons, particularly in winter. It seemed that artificial aeration could compensate for the absence of plant-mediated oxygen supply, though the low temperatures and plant dieback still affected the removal efficiency of COD and TN in the winter. Eight hours of artificial aeration per day was sufficient to eliminate the significant accumulation of NO3--N previously observed in the effluent from continuously aerated subsurface-flow constructed wetlands. These results suggest that the aerated IVCW could treat domestic sewage more efficiently, especially in winter.
英文摘要: Artificial aeration was added to an integrated vertical-flow constructed wetland (called aerated IVCW hereafter) for improving water purification performance. The results showed that both oxygen levels and aerobic zones were increased in the wetland substrates. The electric potential (Eh) profiling demonstrated that artificial aeration maintained the pattern of sequential oxic-anoxic-oxic redox zones within the aerated IVCW chambers in winter, while only two oxic-anoxic zones were present inside the non-aerated IVCW in the cold seasons. The nitrification/denitrification processes and organic matter decomposition were enhanced by artificial aeration since the removal efficiency of NH(4)(-)-N and BOD(5) were significantly improved in all seasons, particularly in winter. It seemed that artificial aeration could compensate for the absence of plant-mediated oxygen supply, though the low temperatures and plant dieback still affected the removal efficiency of COD and TN in the winter. Eight hours of artificial aeration per day was sufficient to eliminate the significant accumulation of NO(3)(-)-N previously observed in the effluent from continuously aerated subsurface-flow constructed wetlands. These results suggest that the aerated IVCW could treat domestic sewage more efficiently, especially in winter.
关键词[WOS]: WASTE-WATER TREATMENT ; REMOVAL EFFICIENCY ; COLD-CLIMATE ; TEMPERATURE ; NITRIFICATION ; PERFORMANCE ; OXYGEN ; BED
语种: 英语
WOS记录号: WOS:000275881500022
ISSN号: 1230-1485
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/13715
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.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China

Recommended Citation:
Tao, Min; He, Feng; Xu, Dong; Li, Ming; Wu, Zhenbin.How Artificial Aeration Improved Sewage Treatment of an Integrated Vertical-Flow Constructed Wetland,POLISH JOURNAL OF ENVIRONMENTAL STUDIES,2010,19(1):183-191
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