Effect of photosynthetically elevated pH on performance of surface   flow-constructed wetland planted with Phragmites australis

doi:10.1007/s11356-016-6730-1

CORC > 北京大学 > 环境科学与工程学院

	Effect of photosynthetically elevated pH on performance of surface flow-constructed wetland planted with Phragmites australis
	Yin, Xiaole ; Zhang, Jian ; Hu, Zhen ; Xie, Huijun ; Guo, Wenshan ; Wang, Qingsong ; Ngo, Huu Hao ; Liang, Shuang ; Lu, Shaoyong ; Wu, Weizhong
刊名	ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
	2016
关键词	Constructed wetland Plant species combination Photosynthetically elevated pH Nitrogen transformation Nitrification and denitrification WASTE-WATER TREATMENT NITROGEN REMOVAL SUBMERSED MACROPHYTES ELODEA-CANADENSIS AMMONIA REMOVAL TEMPERATURE BACTERIA NITRATE SOIL NITRIFICATION
DOI	10.1007/s11356-016-6730-1
英文摘要	Combination of emergent and submerged plants has been proved to be able to enhance pollutant removal efficiency of surface flow-constructed wetland (SFCW) during winter. However, intensive photosynthesis of submerged plants during summer would cause pH increase, which may have adverse effects on emergent plants. In this study, nitrogen transformation of lab-scale SFCW under pH gradient of 7.5, 8.5, 9.5 and 10.5 was systematically investigated. The results showed that total nitrogen (TN) removal efficiency decreased from 76.3 +/- 0.04 to 51.8 +/- 0.04 % when pH increased from 7.5 to 10.5, which was mainly attributed to plant assimilation decay and inhibition of microbe activities (i.e., nitrite-oxidizing bacteria and denitrifiers). Besides, the highest sediment adsorption in SFCW was observed at pH of 8.5. In general, the combination of submerged and emergent plants is feasible for most of the year, but precaution should be taken to mitigate the negative effect of high alkaline conditions when pH rises to above 8.5 in midsummer.; National Natural Science Foundation of China [21307076, 21177075, 51578321]; Fundamental Research Funds of Shandong University [2014TB003, 2015JC056]; SCI(E); PubMed; ARTICLE; zhangjian00@sdu.edu.cn; 15; 15524-15531; 23
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/433946]
专题	环境科学与工程学院
推荐引用方式 GB/T 7714	Yin, Xiaole,Zhang, Jian,Hu, Zhen,et al. Effect of photosynthetically elevated pH on performance of surface flow-constructed wetland planted with Phragmites australis[J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2016.
APA	Yin, Xiaole.,Zhang, Jian.,Hu, Zhen.,Xie, Huijun.,Guo, Wenshan.,...&Wu, Weizhong.(2016).Effect of photosynthetically elevated pH on performance of surface flow-constructed wetland planted with Phragmites australis.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH.
MLA	Yin, Xiaole,et al."Effect of photosynthetically elevated pH on performance of surface flow-constructed wetland planted with Phragmites australis".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH (2016).