How Artificial Aeration Improved Sewage Treatment of an Integrated Vertical-Flow Constructed Wetland

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	How Artificial Aeration Improved Sewage Treatment of an Integrated Vertical-Flow Constructed Wetland
	Tao, Min 1,2; He, Feng 1; Xu, Dong 1; Li, Ming 1,2; Wu, Zhenbin 1
刊名	POLISH JOURNAL OF ENVIRONMENTAL STUDIES
	2010
卷号	19 期号:1 页码:183-191
关键词	integrated vertical-flow constructed wetland (IVCW) artificial aeration redox potential purification effects domestic sewage
ISSN号	1230-1485
通讯作者	Tao, M, Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
中文摘要	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 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.
学科主题	Environmental Sciences
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
类目[WOS]	Environmental Sciences
研究领域[WOS]	Environmental Sciences & Ecology
关键词[WOS]	WASTE-WATER TREATMENT ; REMOVAL EFFICIENCY ; COLD-CLIMATE ; TEMPERATURE ; NITRIFICATION ; PERFORMANCE ; OXYGEN ; BED
收录类别	SCI
资助信息	National
语种	英语
WOS记录号	WOS:000275881500022
公开日期	2010-12-23
内容类型	期刊论文
源URL	[http://ir.ihb.ac.cn/handle/342005/13715]
专题	水生生物研究所_水环境工程研究中心_期刊论文
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
推荐引用方式 GB/T 7714	Tao, Min,He, Feng,Xu, Dong,et al. How Artificial Aeration Improved Sewage Treatment of an Integrated Vertical-Flow Constructed Wetland[J]. POLISH JOURNAL OF ENVIRONMENTAL STUDIES,2010,19(1):183-191.
APA	Tao, Min,He, Feng,Xu, Dong,Li, Ming,&Wu, Zhenbin.(2010).How Artificial Aeration Improved Sewage Treatment of an Integrated Vertical-Flow Constructed Wetland.POLISH JOURNAL OF ENVIRONMENTAL STUDIES,19(1),183-191.
MLA	Tao, Min,et al."How Artificial Aeration Improved Sewage Treatment of an Integrated Vertical-Flow Constructed Wetland".POLISH JOURNAL OF ENVIRONMENTAL STUDIES 19.1(2010):183-191.