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题名: Comparative evaluations of organic matters and nitrogen removal capacities of integrated vertical-flow constructed wetlands: Domestic and nitrified wastewater treatment
作者: Chang, Jun J.1; Liang, Kang2, 3; Wu, Su Q.4; Zhang, Sheng H.1; Liang, Wei2
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: nitrified wastewater ; nitrogen removal ; dissolved oxygen ; integrated vertical-flow constructed wetlands ; temperature ; loading rate ; COD removal ; domestic wastewater
刊名: JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART A-TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING
发表日期: 2015-06-07
DOI: 10.1080/10934529.2015.1012009
卷: 50, 期:7, 页:757-766
收录类别: SCI
文章类型: Article
部门归属: [Chang, Jun J. ; Zhang, Sheng H.] Yunnan Univ, Res Inst Engn & Technol, Kunming, Peoples R China ; [Liang, Kang ; Liang, Wei] Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China ; [Liang, Kang] Chinese Acad Sci, Grad Univ, Beijing, Peoples R China ; [Wu, Su Q.] Jiangxi Acad Environm Sci, Nanchang, Peoples R China
WOS标题词: Science & Technology ; Technology ; Life Sciences & Biomedicine
类目[WOS]: Engineering, Environmental ; Environmental Sciences
研究领域[WOS]: Engineering ; Environmental Sciences & Ecology
英文摘要: Two groups of integrated vertical-flow constructed wetland (IVCW) microcosms were established for treating two types of representative wastewater: domestic and nitrified wastewater under two loading rates (LRs) over about two years. Their removal capacities of organic substance and nitrogen as well as the effects of loading rate (LR), outflow temperature and dissolved oxygen (DO) concentration were investigated and compared. Efficient chemical oxygen demand (COD) eliminations were achieved by the IVCWs, with the mass removal rates increasing linearly with the increasing LRs strongly, achieving average value of 56.07g m(-2) d(-1) at the highest loading rate. Nevertheless, the effluent COD concentrations also increased, with the average value exceeding Class I A discharge standard (< 50mg L-1) for municipal wastewater treatment plants in China at the highest loading rate. Greater total nitrogen (TN) mass removal rates but lower efficiencies were obtained at the high LR for both types of wastewater, and better removal was achieved for nitrified wastewater (NW) in comparison to domestic wastewater (DW), probably due to the prevailing anoxic conditions inside the IVCW beds restricted nitrification process of DW. The influences of LR, temperature and DO on COD removal were slight, but all remarkable on TN reduction. As compared to DO, temperature was more crucial for nitrogen removal, and the temperature dependence coefficient for TN removal of low LR of NW was significantly greater than others.
关键词[WOS]: HYDRAULIC LOADING RATES ; SUBSURFACE FLOW ; WASTEWATERS ; PERFORMANCE ; EXPERIENCE ; SYSTEMS
语种: 英语
WOS记录号: WOS:000353481400010
ISSN号: 1093-4529
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/23939
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.Yunnan Univ, Res Inst Engn & Technol, Kunming, Peoples R China
2.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
3.Chinese Acad Sci, Grad Univ, Beijing, Peoples R China
4.Jiangxi Acad Environm Sci, Nanchang, Peoples R China
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