Nitrogen, phosphorus and organics removal in two vertical flow experimental wetlands receiving pretreated municipal wastewater.
Pollutants removal in two vertical flow experimental wetlands receiving pre-treated municipal wastewater was investigated. Laboratory investigations using microcosms were also carried out in order to identify key processes regulating pollutants removal. Results obtained from experimental wetlands seem to confirm the ability of a single stage installation, where nitrification and denitrification processes are jointly optimised using a gravel medium, always wet but not saturated with water. Results obtained from microcosm investigations show the prominent role of O2 supply, of microbial activity and of bio-available C from vegetal metabolism in the nitrogen removal.
Berzero
Antonella
A
Centro di Ricerca sulle Acque, Università di Pavia, Via Montefiascone, 25, 27100 Pavia. aberzero@unipv.it
Queirazza
Giulio
G
Iannelli
Renato
R
Martignon
Giovanna
G
D001673:Biodegradation, Environmental; D019684:Magnoliopsida / Q000254:growth & development; D017744:Medical Waste Disposal / Q000379:methods*; D009584:Nitrogen / Q000032:analysis*; D009930:Organic Chemicals / Q000032:analysis*; D010758:Phosphorus / Q000032:analysis*; D018517:Plant Roots / Q000382:microbiology; D014507:Urbanization; D014872:Water Movements; D014874:Water Pollutants, Chemical / Q000032:analysis*
D017744:Medical Waste Disposal; D009930:Organic Chemicals; D014874:Water Pollutants, Chemical; D010758:Phosphorus; D009584:Nitrogen