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题名: Nitrate removal from tail water by integrated vertical-flow constructed wetlands at a high hydraulic loading rate
作者: Chang, Jun-jun1, 2; Wu, Su-qing1, 3; Dai, Yanran1, 4; Wu, Zhen-bin1; Liang, Wei1
通讯作者: Liang, W (reprint author), Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China.
关键词: Integrated vertical-flow constructed wetlands (IVCWs) ; Tail water ; NO3--N removal ; Denitrification ; High loading rate
刊名: DESALINATION AND WATER TREATMENT
发表日期: 2013-09-01
DOI: 10.1080/19443994.2012.763049
卷: 51, 期:31-33, 页:6031-6037
收录类别: SCI
文章类型: Article
部门归属: [Chang, Jun-jun ; Wu, Su-qing ; Dai, Yanran ; Wu, Zhen-bin ; Liang, Wei] Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China ; [Chang, Jun-jun] Yunnan Univ, Res Inst Engn & Technol, Kunming 650091, Peoples R China ; [Wu, Su-qing] Jiangxi Acad Environm Sci, Nanchang 330029, Peoples R China ; [Dai, Yanran] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
WOS标题词: Science & Technology ; Technology ; Physical Sciences
资助者: Major Science and Technology Program for Water Pollution Control and Treatment [2011ZX07303-001-04]; National Natural Science Foundation of China [51179184, 41272272]; Key Project of the National Twelfth-Five Year Research Program of China [2012BAD25B05-02]
类目[WOS]: Engineering, Chemical ; Water Resources
研究领域[WOS]: Engineering ; Water Resources
摘要: Nitrate removal rates of two pilot-scale integrated vertical-flow constructed wetlands (IVCWs) treating tail water, under a hydraulic loading rate (HLR) of 250 mm/d with a mean influent NO3--N concentration of 24.4 mg.L-1, were evaluated. Mean NO3--N removal efficiencies of 15.5 and 18.5% with mass removal rates of 1.01 g.m(-2).d(-1) and 1.16 g.m(-2).d(-1) for IVCW 1 (planted with Canna indica and Pontederia cordata) and 2 (planted with Typha orientalis and Arundo donax var. versicolor), respectively, were achieved. The removal rate constants as fitted by the first-order area-based model averaged 0.046 and 0.055 m.d(-1), respectively. Since NO3--N was the dominant nitrogen form in the effluent, denitrification was the limiting step in nitrogen removal despite of favorable pH and anaerobic conditions in the wetland beds. Low availability of carbon source, high HLR, and low temperature could be the probable influencing factors for the observed low NO3--N removal efficiencies. However, IVCW could be used to treat tail water for nitrate removal at a comparable high loading rate.
英文摘要: Nitrate removal rates of two pilot-scale integrated vertical-flow constructed wetlands (IVCWs) treating tail water, under a hydraulic loading rate (HLR) of 250 mm/d with a mean influent NO3--N concentration of 24.4 mg.L-1, were evaluated. Mean NO3--N removal efficiencies of 15.5 and 18.5% with mass removal rates of 1.01 g.m(-2).d(-1) and 1.16 g.m(-2).d(-1) for IVCW 1 (planted with Canna indica and Pontederia cordata) and 2 (planted with Typha orientalis and Arundo donax var. versicolor), respectively, were achieved. The removal rate constants as fitted by the first-order area-based model averaged 0.046 and 0.055 m.d(-1), respectively. Since NO3--N was the dominant nitrogen form in the effluent, denitrification was the limiting step in nitrogen removal despite of favorable pH and anaerobic conditions in the wetland beds. Low availability of carbon source, high HLR, and low temperature could be the probable influencing factors for the observed low NO3--N removal efficiencies. However, IVCW could be used to treat tail water for nitrate removal at a comparable high loading rate.
关键词[WOS]: WASTE-WATER ; DRINKING-WATER ; NUTRIENT REMOVAL ; PILOT-SCALE ; DENITRIFICATION ; NITROGEN ; GROUNDWATER ; PERFORMANCE ; BIOREACTOR ; PHOSPHORUS
语种: 英语
WOS记录号: WOS:000325921700015
ISSN号: 1944-3994
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/19590
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.Yunnan Univ, Res Inst Engn & Technol, Kunming 650091, Peoples R China
3.Jiangxi Acad Environm Sci, Nanchang 330029, Peoples R China
4.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China

Recommended Citation:
Chang, Jun-jun; Wu, Su-qing; Dai, Yanran; Wu, Zhen-bin; Liang, Wei.Nitrate removal from tail water by integrated vertical-flow constructed wetlands at a high hydraulic loading rate,DESALINATION AND WATER TREATMENT,2013,51(31-33):6031-6037
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