Nitrogen, phosphorus and organics removal in two vertical flow experimental wetlands receiving pretreated municipal wastewater
Berzero, A.; Queirazza, G.; Iannelli, R.; Martignon, G.
Annali di Chimica 93(4): 353-362
2003
ISSN/ISBN: 0003-4592 PMID: 12817634 Document Number: 557349
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.