Treatment performance of integrated vertical-flow constructed wetland plots for domestic wastewater

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	Treatment performance of integrated vertical-flow constructed wetland plots for domestic wastewater
	Chang, Jun-jun 1,2; Wu, Su-qing 1,2; Dai, Yan-ran 1,2; Liang, Wei 1; Wu, Zhen-bin 1
刊名	ECOLOGICAL ENGINEERING
	2012-07-01
卷号	44 页码:152-159
关键词	Integrated vertical-flow constructed wetlands (IVCWs) Treatment performance Domestic wastewater DO Temperature Plant combination
ISSN号	0925-8574
通讯作者	Liang, W (reprint author), Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China.
中文摘要	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.
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.
WOS标题词	Science & Technology ; Life Sciences & Biomedicine ; Technology
类目[WOS]	Ecology ; Engineering, Environmental ; Environmental Sciences
研究领域[WOS]	Environmental Sciences & Ecology ; Engineering
关键词[WOS]	HORIZONTAL SUBSURFACE-FLOW ; NITROGEN REMOVAL ; SYSTEM ; DENITRIFICATION ; TEMPERATURE ; PURIFICATION ; VEGETATION ; EFFLUENT ; ORGANICS ; DESIGN
收录类别	SCI
资助信息	National Natural Science Foundation of China[51179184]; Major Science and Technology Program for Water Pollution Control and Treatment[2011ZX07303-001-04]
语种	英语
WOS记录号	WOS:000305443100020
公开日期	2012-09-25
内容类型	期刊论文
源URL	[http://ir.ihb.ac.cn/handle/342005/16975]
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 Univ, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Chang, Jun-jun,Wu, Su-qing,Dai, Yan-ran,et al. Treatment performance of integrated vertical-flow constructed wetland plots for domestic wastewater[J]. ECOLOGICAL ENGINEERING,2012,44:152-159.
APA	Chang, Jun-jun,Wu, Su-qing,Dai, Yan-ran,Liang, Wei,&Wu, Zhen-bin.(2012).Treatment performance of integrated vertical-flow constructed wetland plots for domestic wastewater.ECOLOGICAL ENGINEERING,44,152-159.
MLA	Chang, Jun-jun,et al."Treatment performance of integrated vertical-flow constructed wetland plots for domestic wastewater".ECOLOGICAL ENGINEERING 44(2012):152-159.