Annual nitrogen mass balance in a CW receiving treated wastewater based on continuous water monitoring, sludge and plants samplings

Bilan massique annuel d'azote dans une ZRV, basé sur un suivi continu de l'eau, des prélèvements de boue et de plantes

S. Papias (1) , S. Prost Boucle (1) , Marina Coquery (1) , M. Masson (1) , M. Arhror (1) , Catherine Boutin (1)

1 UR MALY - Milieux aquatiques, écologie et pollutions

Constructed Wetlands receiving treated wastewater (CWtw) are systems placed between Wastewater Treatment Plants (WWTPs) and receiving water bodies. In order to assess the efficiency of these systems, a 6-years project has been launched with 3 sites (full and pilot scales). A comprehensive monitoring is carried out to understand the fate of conventional pollutants (C, N, P, TSS, etc.), micropollutants and faecal contamination. One of the CWtw monitored, located in Marguerittes (Southern France), is a 2-ha full-size site made of 2 ponds. This study focuses on the CWtw performance assessment based on different methods used (including ion-selective electrodes, bathymetry and quadrats) to measure nitrogen (N) in each compartment. It gives the N mass balance over a 1-year period (2015).

Mots clés: nitrogen; planted discharge area; constructed wetland

Mots clés: AZOTE; ZONE DE REJET VEGETALISEE; FILTRE PLANTE DE ROSEAUX

Domaines: Ingénierie de l'environnement

S. Papias, S. Prost Boucle, Marina Coquery, M. Masson, M. Arhror, et al.. Annual nitrogen mass balance in a CW receiving treated wastewater based on continuous water monitoring, sludge and plants samplings. 7th International Symposium for Wetland Pollutant Dynamics and Control (WETPOL2017), Aug 2017, Big Sky, Mt, United States. ⟨hal-01765902⟩