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Updated: Sep 25, 2026

Mesocosm-Scale Constructed Wetland Design for Wastewater Treatment
Published on: May 2, 2025
Nitrogen, phosphorus and organics removal in two vertical flow experimental wetlands receiving pretreated municipal
Antonella Berzero1, Giulio Queirazza, Renato Iannelli
1Centro di Ricerca sulle Acque, Università di Pavia, Via Montefiascone, 25, 27100 Pavia. aberzero@unipv.it
Abstract:
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.
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