Nitrous oxide emissions from surface flow and subsurface flow constructed wetland microcosms: Effect of feeding strategies

被引：51

作者：

Jia, Wenlin ^{[1
]}

Zhang, Jian ^{[1
]}

Li, Peizhi ^{[2
]}

Xie, Huijun ^{[3
]}

Wu, Juan ^{[1
,4
]}

Wang, Jinhe ^{[1
]}

机构：

[1] Shandong Univ, Sch Environm Sci & Engn, Shandong Key Lab Water Pollut Control & Resource, Jinan 250100, Peoples R China

[2] Shandong Nansi Lake Water Qual Monitoring Ctr, Jining 272045, Peoples R China

[3] Shandong Univ, Environm Res Inst, Jinan 250100, Peoples R China

[4] Qingdao Agr Univ, Coll Resource & Environm, Qingdao 266109, Peoples R China

来源：

ECOLOGICAL ENGINEERING | 2011年 / 37卷 / 11期

基金：

中国国家自然科学基金;

关键词：

N2O emission; Nitrogen removal; Feeding strategy; Constructed wetland; WASTE-WATER TREATMENT; N2O EMISSIONS; CH4; DENITRIFICATION; METHANE; SOIL; NITRIFICATION; PERFORMANCE; FLUXES; IMPACT;

D O I：

10.1016/j.ecoleng.2011.06.019

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

The effects of continuous and intermittent feeding strategies on nitrogen removal and N2O emission from surface flow and subsurface flow constructed wetlands were evaluated in this study. Microcosm wetlands planted with Phragmites australis were constructed and operated with different feeding strategies for the 4-month experiment. Results showed the intermittent feeding strategy could enhance the removal of ammonium effectively in the subsurface flow constructed wetlands, although it had no significant effect for the surface flow wetlands. And the intermittent feeding mode could promote the emission of N2O. The amount of N2O-N emission from the subsurface flow constructed wetlands with intermittent feeding mode was about 5 times higher than that with continuous feeding strategy and the emission rate ranged from 0.09 +/- 0.03 to 7.33 +/- 1.49 mg/m(2)/h. Compared with the surface flow constructed wetlands, the N2O emission in the subsurface flow constructed wetlands was affected significantly by the intermittent feeding mode. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：1815 / 1821

页数：7

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