A proper treatment of wastewater is essential before its discharge into natural water reservoirs or before its reuse. Constructed wetlands (CWs) are a worldwide sanitation technology for wastewater treatment because it owns the advantages of low external energy requirements, aesthetic value and easy operation. Biochar may be attractive as a robust multifunctional medium in CWs for adsorbing micropollutants, supporting plant growth, and providing environments for microbe communities because of its unique physicochemical properties. This study aims at evaluating the removal efficiency towards selected pharmaceutical compounds (PhCs) and their transformation products (TPs) by a vertical-flow CW implemented by using granular biochar (average diameter 10 mm), together with sand and gravel with different diameters as filling media, and planted with Phragmites australis (CW-BC-P). The removal efficiency of this system was compared to the ones obtained by a CW filled as CW-BC-P, but unplanted (CW-BC-U) and a planted CW in which the biochar was replaced with gravel of the same diameter (CW-G-P). All CWs were fed with urban wastewater from the Sidi Thabet municipality (Tunisia).
REMOVAL EFFICIENCY OF PHARMACEUTICAL COMPOUNDS BY VERTICALFLOW CONSTRUCTED WETLANDS INTEGRATED WITH BIOCHAR, TREATING URBAN WASTEWATER / M. Ayadi, C. Fersi, I. Ben Salah, F. Touati, G. Bonaccorso, L. Venturini, M. Del Bubba. - ELETTRONICO. - (2022), pp. 185-185. (Intervento presentato al convegno XIX Congresso Nazionale della Divisione di Chimica dell'Ambiente e dei Beni Culturali tenutosi a Torino nel 20-23 giugno 2022).
REMOVAL EFFICIENCY OF PHARMACEUTICAL COMPOUNDS BY VERTICALFLOW CONSTRUCTED WETLANDS INTEGRATED WITH BIOCHAR, TREATING URBAN WASTEWATER
M. Ayadi;G. Bonaccorso;M. Del Bubba
2022
Abstract
A proper treatment of wastewater is essential before its discharge into natural water reservoirs or before its reuse. Constructed wetlands (CWs) are a worldwide sanitation technology for wastewater treatment because it owns the advantages of low external energy requirements, aesthetic value and easy operation. Biochar may be attractive as a robust multifunctional medium in CWs for adsorbing micropollutants, supporting plant growth, and providing environments for microbe communities because of its unique physicochemical properties. This study aims at evaluating the removal efficiency towards selected pharmaceutical compounds (PhCs) and their transformation products (TPs) by a vertical-flow CW implemented by using granular biochar (average diameter 10 mm), together with sand and gravel with different diameters as filling media, and planted with Phragmites australis (CW-BC-P). The removal efficiency of this system was compared to the ones obtained by a CW filled as CW-BC-P, but unplanted (CW-BC-U) and a planted CW in which the biochar was replaced with gravel of the same diameter (CW-G-P). All CWs were fed with urban wastewater from the Sidi Thabet municipality (Tunisia).
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