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题名: Treatment performance of integrated vertical-flow constructed wetland plots for domestic wastewater
作者: Chang, Jun-jun1, 2; Wu, Su-qing1, 2; Dai, Yan-ran1, 2; Liang, Wei1; Wu, Zhen-bin1
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) ; Treatment performance ; Domestic wastewater ; DO ; Temperature ; Plant combination
刊名: ECOLOGICAL ENGINEERING
发表日期: 2012-07-01
DOI: 10.1016/j.ecoleng.2012.03.019
卷: 44, 页:152-159
收录类别: SCI
文章类型: Article
部门归属: [Chang, Jun-jun; Wu, Su-qing; Dai, Yan-ran; Liang, Wei; Wu, Zhen-bin] Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China; [Chang, Jun-jun; Wu, Su-qing; Dai, Yan-ran] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
WOS标题词: Science & Technology ; Life Sciences & Biomedicine ; Technology
资助者: National Natural Science Foundation of China[51179184]; Major Science and Technology Program for Water Pollution Control and Treatment[2011ZX07303-001-04]
类目[WOS]: Ecology ; Engineering, Environmental ; Environmental Sciences
研究领域[WOS]: Environmental Sciences & Ecology ; Engineering
摘要: Two pilot-scale integrated vertical-flow constructed wetlands (IVCWs) in parallel were employed to evaluate domestic wastewater treatment performance at a loading rate of 250 mm/d, and each was planted with two different plant species: Typha orientalis and Arundo donax var. versicolor (Plot 1), and Canna indica and Pontederia cordata (Plot 2). The results showed that different plant combinations offered no significant improvement in pollutant removal efficiencies (p > 0.05). The mean removal efficiencies associated with Plot 1 and Plot 2 were 59.9% vs. 62.8% for COD, 15.0% vs. 12.8% for TN, and 52.0% vs. 51.1% for TP, respectively. The mean mass removal rates (g m(-2) d(-1)) were 44.3 vs. 46.4 for COD, 1.27 vs. 1.08 for TN, and 0.393 vs. 0.386 for TP, respectively. It was noted that nitrification was the limited step for TN removal. Dissolved oxygen (DO) in the wetland beds was a dependence factor for the removals of organic matter and nitrogen, and it could be used to predict removal rates of chemical oxygen demand (COD) and total nitrogen (TN). Low temperatures had a negative impact on nutrient removals, especially for TN. (C) 2012 Elsevier B.V. All rights reserved.
英文摘要: Two pilot-scale integrated vertical-flow constructed wetlands (IVCWs) in parallel were employed to evaluate domestic wastewater treatment performance at a loading rate of 250 mm/d, and each was planted with two different plant species: Typha orientalis and Arundo donax var. versicolor (Plot 1), and Canna indica and Pontederia cordata (Plot 2). The results showed that different plant combinations offered no significant improvement in pollutant removal efficiencies (p > 0.05). The mean removal efficiencies associated with Plot 1 and Plot 2 were 59.9% vs. 62.8% for COD, 15.0% vs. 12.8% for TN, and 52.0% vs. 51.1% for TP, respectively. The mean mass removal rates (g m(-2) d(-1)) were 44.3 vs. 46.4 for COD, 1.27 vs. 1.08 for TN, and 0.393 vs. 0.386 for TP, respectively. It was noted that nitrification was the limited step for TN removal. Dissolved oxygen (DO) in the wetland beds was a dependence factor for the removals of organic matter and nitrogen, and it could be used to predict removal rates of chemical oxygen demand (COD) and total nitrogen (TN). Low temperatures had a negative impact on nutrient removals, especially for TN. (C) 2012 Elsevier B.V. All rights reserved.
关键词[WOS]: HORIZONTAL SUBSURFACE-FLOW ; NITROGEN REMOVAL ; SYSTEM ; DENITRIFICATION ; TEMPERATURE ; PURIFICATION ; VEGETATION ; EFFLUENT ; ORGANICS ; DESIGN
语种: 英语
WOS记录号: WOS:000305443100020
ISSN号: 0925-8574
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/16975
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 Univ, Beijing 100049, Peoples R China

Recommended Citation:
Chang, Jun-jun; Wu, Su-qing; Dai, Yan-ran; Liang, Wei; Wu, Zhen-bin.Treatment performance of integrated vertical-flow constructed wetland plots for domestic wastewater,ECOLOGICAL ENGINEERING,2012,44():152-159
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