Iron scraps enhance simultaneous nitrogen and phosphorus removal in subsurface flow constructed wetlands.
Constructed wetlands
Iron cycle
Iron scraps
Nitrogen removal
Phosphorus removal
Journal
Journal of hazardous materials
ISSN: 1873-3336
Titre abrégé: J Hazard Mater
Pays: Netherlands
ID NLM: 9422688
Informations de publication
Date de publication:
05 08 2020
05 08 2020
Historique:
received:
28
01
2020
revised:
26
03
2020
accepted:
27
03
2020
pubmed:
4
5
2020
medline:
4
5
2020
entrez:
4
5
2020
Statut:
ppublish
Résumé
In rural domestic wastewater treatment using subsurface constructed wetland system (SFCWs), the lack of a carbon source for denitrification and limited phosphorus uptake are responsible for low removal of nitrogen and phosphorus, and a suitable substrate is therefore, necessary. Iron is an important component in nitrogen and phosphorus biogeochemical cycles. Few studies have addressed the application of iron in SFCWs. Therefore, we constructed SFCWs that used iron scraps as a substrate. Enhanced nitrification, denitrification and removal of phosphorus were observed. The large proportion of nitrite-oxidising bacteria present in CWs with iron scraps (CW-T) compared to gravel beds indicated that iron may enhance ammonium (NH
Identifiants
pubmed: 32361175
pii: S0304-3894(20)30601-4
doi: 10.1016/j.jhazmat.2020.122612
pii:
doi:
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
122612Informations de copyright
Copyright © 2020 Elsevier B.V. All rights reserved.
Déclaration de conflit d'intérêts
Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.