Nature-based Solutions on existing
infrastructures for resilient Water
Management in the Mediterranean
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FWC-NbS 1: Trattamento e stoccaggio delle acque reflue (Type A + B)
Località: Carrión de los Céspedes, Seville (Spain)
Clima: Clima mediterraneo caldo-estivo
Area: 4.1 Ha
Obiettivo: Migliorare il riutilizzo delle acque reflue per l’irrigazione e la quantità e la qualità dello stoccaggio delle acque trattate.
Sfide: Siccità e scarsità d’acqua; qualità dell’acqua immagazzinata; inquinamento dell’acqua e deflussi; contaminazione diffusa degli acquiferi da fertilizzanti; evaporazione; impatti dei cambiamenti climatici; digitalizzazione nell’ambito del servizio idrico.
Descrizione: Il centro sperimentale è un Living Lab per la co-creazione, sperimentazione e valutazione di prodotti innovativi nel campo delle risorse idriche, il trattamento delle acque reflue e il settore dell’economia circolare. Il centro funziona anche come impianto di depurazione delle acque reflue per il Comune. Dispone di numerose Soluzioni Basate sulla Natura per il trattamento delle acque reflue (zone umide costruite – CW -, torba, filtri di sabbia e verdi, laghetti ad alta velocità con alghe e barriere reattive permeabili), sufficientemente rappresentative per ampliare i risultati a una scala reale. Gli investimenti sono principalmente pubblici.
A comparative assessment and optimization among different seven types of Constructed Wetland combination will be pursued at real pilot scale. It will be evaluated the performance removal both for physic-chemical and microbiological species for reclamation and irrigation reuse, according to the water discharge and reuse regulatory framework.
CWs will be fed with the outlet of an already existing Imhoff Tank, previously pre-treated by an existing pre-treatment (screening and aerated grit and grease removal chamber) with the exception of one CW that will fed with the pre-treated wastewater.
A floating garden system will be developed to be used as a shading system to reduce the evaporation rate from water storage infrastructures, in this case, irrigation tanks.
The objective is to reduce evaporation rates while providing a range of other biodiversity benefits, such as providing habitats for aquatic and terrestrial species, or acting as connecting corridors between habitats.
In order to be functional, this system has to meet a number of requirements, which are detailed below:
The equipment of ultrasound emissions will be implemented in an experimental reservoir tank for water reuse irrigation located in the Experimental Center of Carrión de los Céspedes.
The wastewater treated by CWS will be derived from the collection chamber to the central tank in the image, which will function as a buffer tank to distribute the water to two experimental tanks, one of them intended for experimentation with ultrasound for the reduction of microalgae and E. coli removal for reuse in agricultural irrigation.
This project has received funding from the European Union’s PRIMA Research and innovation programme under Grant Agreement No 2221.