Journal
CHEMOSPHERE
Volume 117, Issue -, Pages 502-505Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.chemosphere.2014.08.084
Keywords
Vertical subsurface flow constructed wetland; Spray aeration; Nitrogen removal; Organics removal; Nitrification
Categories
Funding
- National Natural Science Foundation of China [51309053, 51079028]
- Fundamental Research Funds for the Central Universities-DHU Distinguished Young Professor Program [B201310]
- Fundamental Research Funds for the Central Universities
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The objective of present study was to assess the simultaneous removal of organics and nitrogen by four lab-scale vertical subsurface flow constructed wetlands (V-SFCWs). The emergent plants employed were Canna indica. Five-month experiments showed that the planted and aerated system largely reduced the COD by 95%, NH4 by 88% and total inorganic nitrogen (TIN) by 83%. It outperformed the unplanted or simple aerated system and was much better than non-aerated system. The study provided a strong evidence to support widespread research and application of spray aeration as a low-cost and energy-efficient aeration technology in V-SFCWs. (C) 2014 Elsevier Ltd. All rights reserved.
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