On the performance of a pilot hybrid constructed wetland for stormwater recovery in Mediterranean climate | Zendy

Delia Ventura | Zendy; S. Barbagallo | Zendy; Simona Consoli | Zendy; Margherita Ferrante | Zendy; Mirco Milani | Zendy; Feliciana Licciardello | Zendy; Giuseppe Luigi Cirelli | Zendy

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On the performance of a pilot hybrid constructed wetland for stormwater recovery in Mediterranean climate

Author(s) -

Delia Ventura,

S. Barbagallo,

Simona Consoli,

Margherita Ferrante,

Mirco Milani,

Feliciana Licciardello,

Giuseppe Luigi Cirelli

Publication year - 2019

Publication title -

water science and technology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.406

H-Index - 137

eISSN - 1996-9732

pISSN - 0273-1223

DOI - 10.2166/wst.2019.103

Subject(s) - environmental science , total suspended solids , stormwater , constructed wetland , chemical oxygen demand , biochemical oxygen demand , effluent , water quality , environmental engineering , wastewater , surface runoff , macrophyte , suspended solids , urban runoff , wetland , ecology , biology

The overall efficiency of a pilot-scale hybrid constructed wetland (H-CW), located on a retail store's parking area in Eastern Sicily, for alternative treatment of stormwater runoff and of sequential batch reactor (SBR) effluent was evaluated. Experimental activities were focused on system performances, including wastewater (WW) quality and hydraulic monitoring. System design, macrophyte growth and seasonal factors influenced the pilot plant performance. Very high removal efficiency for microbial indicators were reported within the subsurface horizontal flow unit (HF), playing a strategic role for Clostridium perfringens. The algal growth occurred in the free water surface (FWS) unit and inhibited removal efficiencies of total suspended solids (TSS), biochemical oxygen demand (BOD 5 ) and chemical oxygen demand (COD), impairing water quality. The whole H-CW showed good efficiency in trace metals removal, especially for Pb, Zn, and Cu. Preliminary results suggested the reliability of the H-CW technology in decentralised water treatment facilities for enhancing water recovery and reuse.

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