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How Artificial Aeration Improved Sewage Treatment of an Integrated Vertical-Flow Constructed Wetland
Tao, Min1,2; He, Feng1; Xu, Dong1; Li, Ming1,2; Wu, Zhenbin1; Tao, M, Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
2010
Source PublicationPOLISH JOURNAL OF ENVIRONMENTAL STUDIES
ISSN1230-1485
Volume19Issue:1Pages:183-191
AbstractArtificial 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.; 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.
SubtypeArticle
KeywordIntegrated Vertical-flow Constructed Wetland (Ivcw) Artificial Aeration Redox Potential Purification Effects Domestic Sewage
Subject AreaEnvironmental Sciences
Department[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 HeadingsScience & Technology ; Life Sciences & Biomedicine
Indexed BySCI
Funding OrganizationNational ; National ; National ; National
Language英语
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS KeywordWASTE-WATER TREATMENT ; REMOVAL EFFICIENCY ; COLD-CLIMATE ; TEMPERATURE ; NITRIFICATION ; PERFORMANCE ; OXYGEN ; BED
WOS IDWOS:000275881500022
Funding OrganizationNational ; National ; National ; National
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/13715
Collection水环境工程研究中心
Corresponding AuthorTao, M, Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
Affiliation1.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
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,&Tao, M, Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China.(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.
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