Intermittent aeration strategy to enhance organics and nitrogen removal in subsurface flow constructed wetlands

Publisher:
Elsevier
Publication Type:
Journal Article
Citation:
Bioresource Technology, 2013, 141 (1), pp. 117 - 122
Issue Date:
2013-01
Full metadata record
Files in This Item:
Filename Description Size
2012004744OK.pdf432.31 kB
Adobe PDF
In this study, an intermittent-aerated subsurface flow constructed wetland (SFCW) A was set up to assess its performance in decentralized rural sewage treatment. A conventional SFCW B and a subsurface wastewater infiltration system (SWIS C) were also constructed for comparison. Alternate anaerobic and aerobic conditions were well developed by intermittent aeration. High removal of organic pollutants (29.3 g m-2 d-1), ammonium nitrogen (3.5 g m-2 d-1) and total nitrogen (3.3 g m-2 d-1) were obtained simultaneously in SFCW A compared with SFCW B and SWIS C. Fluorescence in situ hybridization analysis proved that the intermittent aeration obviously enhanced the growth of ammonia-oxidizing bacteria (AOB) and nitrite-oxidizing bacteria (NOB) in SFCW A. These results suggest that intermittent aeration strategy is reliable to enhance the performance of SFCWs in decentralized rural sewage treatment.
Please use this identifier to cite or link to this item: