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Lixiviates pond

Lixiviates pond

The rain water outside the controlled deposit vessel is captured and harnessed by the perimeter ditches  that deviate it them outside the exploitation surface to reduce the amount of rain water that can get in contact with the residues, diminishing the amount of semi clean and lixiviate generation.

The storage and control of internal rain water and lixiviate are in the lower part of the landfill where, by means of the gravity and gradually canalized arrive to the retention ponds: Two of semi clean waters -surface waters of inside the vessel- with a joint capacity of 7,200 m3 and one of lixiviates adequately impermeable with a capacity of 6,000 m3.

The dimensions of these ponds are regulated in the Royal Decree 1/1997, of 7th of January.

The semi clean waters and the lixiviates treated in the plant of the controlled disposal site plant are finally poured to the sewer system of Gavà, where mixed with the rest of the urban residual waters are treated in the depuration plant station of residual waters of Gavà - Viladecans.

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