Constructed Wetlands treating urban runoff contaminated with nitrogen

Xiaohui Wu, Miklas Scholz, Lin Rao

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Citation (Scopus)

Abstract

The aim of this research project was to assess the role of the macrophyte Phragmites australis (Cav.) Trin. ex Steud. in experimental, mature and temporarily flooded vertical-flow wetland filters treating simulated urban runoff rich in organic matter. During the experiment, ammonium chloride was added to sieved concentrated road runoff (i.e. gully pot liquor) to simulate primary treated urban runoff contaminated with nitrogen. The five days @ 20°C N-Allylthiourea biochemical oxygen demand (BOD) and chemical oxygen demand removal efficiencies were relatively lower for planted than unplanted filters. Moreover, there was no significant difference for BOD removal for all filters under fluctuating inflow concentrations of sulfate. The nitrogen removal performances of planted filters were more efficient and stable throughout the seasons compared to those of unplanted filters. A substantial load of nitrogen (approximately 500 mg per filter (diameter of 10 cm) at the end of the growing season) was removed by harvesting P. australis. Plant uptake was the main removal mechanism for nitrogen during high concentrations (approximately 10 mg/L) of ammonia-nitrogen in the urban runoff.

Original languageEnglish
Title of host publication2nd International Conference on Bioinformatics and Biomedical Engineering, iCBBE 2008
PublisherIEEE Computer Society
Pages3613-3616
Number of pages4
ISBN (Print)9781424417483
DOIs
Publication statusPublished - 2008
Externally publishedYes
Event2nd International Conference on Bioinformatics and Biomedical Engineering, iCBBE 2008 - Shanghai, China
Duration: 16 May 200818 May 2008

Publication series

Name2nd International Conference on Bioinformatics and Biomedical Engineering, iCBBE 2008

Conference

Conference2nd International Conference on Bioinformatics and Biomedical Engineering, iCBBE 2008
Country/TerritoryChina
CityShanghai
Period16/05/0818/05/08

Keywords

  • Ammonia-nitrogen
  • Constructed wetland
  • Macrophyte harvesting
  • Phragmites australis
  • Urban runoff

ASJC Scopus subject areas

  • Biotechnology
  • Biomedical Engineering

Fingerprint

Dive into the research topics of 'Constructed Wetlands treating urban runoff contaminated with nitrogen'. Together they form a unique fingerprint.

Cite this