El Prat del Llobregat Reclaimed Water Plant, It is owned by the Barcelona Metropolitan Area (AMB) and operated by Aigües de Barcelona. consists of two treatments in a row:
– Basic treatment: Physical-chemical treatment + Microfiltration + UV + Chlorination (Capacity of treatment: 285.000 m3 / day), for environmental use.
– Advanced treatment: Ultrafiltration + Reverse Osmosis + UV (Capacity of treatment: 15.000 m3 / day), for injection into the barrier against saline intrusion.