文献类型：期刊文献

英文题名：Nitrogen Removal in a Horizontal Subsurface Flow Constructed Wetland Estimated Using the First-Order Kinetic Model

作者：Cui, Lijuan[1,2,3] Li, Wei[1,2,3] Zhang, Yaqiong[1,2,3] Wei, Jiaming[1,2,3] Lei, Yinru[1,2,3] Zhang, Manyin[1,2,3] Pan, Xu[1,2,3] Zhao, Xinsheng[1,2,3] Li, Kai[1,2,3] Ma, Wu[4]

第一作者：Cui, Lijuan

通信作者：Cui, LJ[1];Cui, LJ[2];Cui, LJ[3]

机构：[1]Chinese Acad Forestry, Inst Wetland Res, Beijing 100091, Peoples R China;[2]Beijing Hanshiqiao Natl Wetland Ecosyst Res Stn, Beijing 101399, Peoples R China;[3]Beijing Key Lab Wetland Ecol Funct & Restorat, Beijing 100091, Peoples R China;[4]West Virginia Univ, Sch Nat Resources, Morgantown, WV 26506 USA

年份：2016

卷号：8

期号：11

外文期刊名：WATER

收录：;EI(收录号：20165103139987);Scopus(收录号：2-s2.0-85005943356);WOS:【SCI-EXPANDED(收录号:WOS:000389660700038)】；

基金：This study was supported by the Fundamental Research Funds for the Central Non-Profit Research Institution of CAF "N Removal mechanisms of subsurface constructed wetland in Health wetland" (CAFYBB2014QA029) and "The Lecture and Study Program for Outstanding Scholars from Home and Abroad" (CAFYBB2011007).

语种：英文

外文关键词：horizontal subsurface flow wetland; N removal; first-order kinetics; model

摘要：We monitored the water quality and hydrological conditions of a horizontal subsurface constructed wetland (HSSF-CW) in Beijing, China, for two years. We simulated the area-based constant and the temperature coefficient with the first-order kinetic model. We examined the relationships between the nitrogen (N) removal rate, N load, seasonal variations in the N removal rate, and environmental factors-such as the area-based constant, temperature, and dissolved oxygen (DO). The effluent ammonia (NH4+-N) and nitrate (NO3--N) concentrations were significantly lower than the influent concentrations (p < 0.01, n = 38). The NO3--N load was significantly correlated with the removal rate (R-2 = 0.96, p < 0.01), but the NH4+-N load was not correlated with the removal rate (R-2 = 0.02, p > 0.01). The area-based constants of NO3--N and NH4+-N at 20 degrees C were 27 +/- 26 (mean +/- SD) and 14 +/- 10 m.year(-1), respectively. The temperature coefficients for NO3--N and NH4+-N were estimated at 1.004 and 0.960, respectively. The area-based constants for NO3--N and NH4+-N were not correlated with temperature (p > 0.01). The NO3--N area-based constant was correlated with the corresponding load (R-2 = 0.96, p < 0.01). The NH4+-N area rate was correlated with DO (R-2 = 0.69, p < 0.01), suggesting that the factors that influenced the N removal rate in this wetland met Liebig's law of the minimum.