ORIGINAL RESEARCH
The Fate of Ammonium in Integrated Vertical-flow Constructed Wetlands Using Stable Isotope Technique
Yun Hu1,2, Feng He1, Long Wang1,2, Jian Sun1,2, Tao Huang1,2, Zhenbin Wu1
 
More details
Hide details
 
1State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology,
Chinese Academy of Sciences, Wuhan 430072, China
2University of Chinese Academy of Sciences, Beijing 100049, China
 
 
Submission date: 2015-10-28
 
 
Final revision date: 2016-01-19
 
 
Acceptance date: 2016-01-22
 
 
Publication date: 2016-05-25
 
 
Pol. J. Environ. Stud. 2016;25(3):1027-1032
 
KEYWORDS
TOPICS
ABSTRACT
The fate of ammonium (NH4+) was investigated using the 15N 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.
eISSN:2083-5906
ISSN:1230-1485
Journals System - logo
Scroll to top