The Fate of Ammonium in Integrated Vertical-flow Constructed Wetlands Using Stable Isotope Technique

被引：6

作者：

Hu, Yun ^{[1
,2
]}

He, Feng ^{[1
]}

Wang, Long ^{[1
,2
]}

Sun, Jian ^{[1
,2
]}

Huang, Tao ^{[1
,2
]}

Wu, Zhenbin ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

来源：

POLISH JOURNAL OF ENVIRONMENTAL STUDIES | 2016年 / 25卷 / 03期

基金：

中国国家自然科学基金;

关键词：

ammonium; integrated vertical-flow constructed wetland; N-15; tracer; plant uptake; stable isotope technique; HORIZONTAL SUBSURFACE FLOW; NITROGEN TRANSFORMATIONS; OXIDATION; REMOVAL; MICROBIOLOGY; SYSTEMS; N-15;

D O I：

10.15244/pjoes/61534

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The fate of ammonium (NH4+) was investigated using the N-15 tracer stable isotope technique in integrated vertical-flow constructed wetlands (IVCWs). Two types of IVCW systems were built: unplanted IVCWs (control) and planted IVCWs. The results showed that a high NH4+ removal efficiency (95.4%) in the planted IVCWs. Plants not only removed NH4+ by direct uptake (13.6 +/- 0.7%) but also improved the NH4+ removal capacity of IVCWs, compared with the control. Besides plant uptake, microbial conversion was the dominant mechanism of NH4+ removal in IVCWs, and a large proportion (75.2-85.6%) of added NH4+ may be permanently removed via anammox and nitrification-denitrification processes in IVCWs.

引用

页码：1027 / 1032

页数：6

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