Assessment of the nutrient removal performance in integrated constructed wetlands with the self-organizing map

Zhang, L; Scholz, M; Mustafa, A; Harrington, R

Abstract

The self-organizing map (SOM) model was applied to predict outflow nutrient concentrations
for integrated constructed wetlands (ICWs) treating farmyard runoff. The SOM
showed that the outflow ammonia-nitrogen concentrations were strongly correlated with
water temperature and salt concentrations, indicating that ammonia-nitrogen removal is
effective at low salt concentrations and comparatively high temperatures in ICWs. Soluble
reactive phosphorus removal was predominantly affected by salt and dissolved oxygen
concentrations. In addition, pH and temperature were weakly correlated with soluble
reactive phosphorus removal, suggesting that soluble reactive phosphorus was easily
removed within ICWs, if salt concentrations were low, and dissolved oxygen, temperature
and pH values were high. The SOM model performed very well in predicting the nutrient
concentrations with water quality variables such as temperature, conductivity and
dissolved oxygen, which can be measured cost-effectively. The results indicate that
the SOM model was an appropriate approach to monitor wastewater treatment processes
in ICWs.

Citation

Zhang, L., Scholz, M., Mustafa, A., & Harrington, R. (2008). Assessment of the nutrient removal performance in integrated constructed wetlands with the self-organizing map. Water Research, 42(13), 3519-3527. https://doi.org/10.1016/j.watres.2008.04.027

• Journal Article Type: Article
• Publication Date: Jan 1, 2008
• Deposit Date: Feb 28, 2012
• Journal: Water Research
• Print ISSN: 0043-1354
• Publisher: IWA Publishing
• Peer Reviewed: Peer Reviewed
• Volume: 42
• Issue: 13
• Pages: 3519-3527
• DOI: https://doi.org/10.1016/j.watres.2008.04.027
• Publisher URL: http://dx.doi.org/10.1016/j.watres.2008.04.027