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	Effect of carbon source on the denitrification in constructed wetlands
	Lu Songliu ; Hu Hongying ; Sun Yingxue ; Yang Jia
	2010-10-12 ; 2010-10-12
关键词	constructed wetland carbon source denitrification nitrate nitrite WASTE-WATER TREATMENT SUBSURFACE FLOW WETLANDS NITRATE REMOVAL RIPARIAN WETLANDS NITROGEN TRANSFORMATIONS NITRITE ACCUMULATION AGRICULTURAL RUNOFF ORGANIC-CARBON SOIL RHIZOSPHERE Environmental Sciences
中文摘要	The ability of constructed wetlands with different plants in nitrate removal were investigated. The factors promoting the rates of denitrification including organic carbon, nitrate load, plants in wetlands, pH and water temperature in field were systematically investigated. The results showed that the additional carbon source (glucose) can remarkably improve the nitrate removal ability of the constructed wetland. It demonstrated that the nitrate removal rate can increase from 20% to more than 50% in summer and from 10% to 30% in winter, when the nitrate concentration was 30-40 mg/L, the retention time was 24 h and 25 mg/L dissolved organic carbon (DOC) was ploughed into the constructed wetland. However, the nitrite in the constructed wetland accumulated a little with the supply of the additional carbon source in summer and winter, and it increased from 0.15 to 2 mg/L in the effluent. It was also found that the abilities of plant in adjusting pH and temperature can result in an increase of denitrification in wetlands. The seasonal change may also impact the denitrification.
语种	英语 ; 英语
出版者	SCIENCE PRESS ; BEIJING ; 16 DONGHUANGCHENGGEN NORTH ST, BEIJING 100717, PEOPLES R CHINA
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/79859]
专题	清华大学
推荐引用方式 GB/T 7714	Lu Songliu,Hu Hongying,Sun Yingxue,et al. Effect of carbon source on the denitrification in constructed wetlands[J],2010, 2010.
APA	Lu Songliu,Hu Hongying,Sun Yingxue,&Yang Jia.(2010).Effect of carbon source on the denitrification in constructed wetlands..
MLA	Lu Songliu,et al."Effect of carbon source on the denitrification in constructed wetlands".(2010).

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