Effect of spray aeration on organics and nitrogen removal in vertical subsurface flow constructed wetland

Yi Ding; Wei Wang; Xin-Shan Song; Gang Wang; Yu-Hui Wang

doi:10.1016/j.chemosphere.2014.08.084

Effect of spray aeration on organics and nitrogen removal in vertical subsurface flow constructed wetland

Chemosphere. 2014 Dec:117:502-5. doi: 10.1016/j.chemosphere.2014.08.084. Epub 2014 Sep 26.

Authors

Yi Ding¹, Wei Wang¹, Xin-Shan Song², Gang Wang³, Yu-Hui Wang⁴

Affiliations

¹ College of Environmental Science and Engineering, State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Donghua University, Shanghai 201620, China.
² College of Environmental Science and Engineering, State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Donghua University, Shanghai 201620, China. Electronic address: dingyi8866@gmail.com.
³ China Institute of Water Resources and Hydropower Research, Beijing 100038, China.
⁴ College of Environmental Science and Engineering, State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Donghua University, Shanghai 201620, China. Electronic address: yhwang@dhu.edu.cn.

PMID: 25259785
DOI: 10.1016/j.chemosphere.2014.08.084

Abstract

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.

Keywords: Nitrification; Nitrogen removal; Organics removal; Spray aeration; Vertical subsurface flow constructed wetland.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Biodegradation, Environmental
Magnoliopsida / metabolism*
Nitrogen / metabolism*
Organic Chemicals / metabolism*
Waste Disposal, Fluid / methods*
Water Pollutants, Chemical / metabolism*
Wetlands*

Substances

Organic Chemicals
Water Pollutants, Chemical
Nitrogen