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Pond for storage and regulation of rain water

Pond for storage and regulation of rain water

When tackling the conditions and characteristics of the networks for the drainage of surface rainwater, it is important to point out that the hydric regime, including consideration of the meteorological and climate characteristics of the area, and the geological formation of the Garraf massif, has conditioned the design and dimensions of the drainage networks.

Thus, in order to prevent exterior rainwater running towards the controlled depot, a set of perimeter trenches have been constructed to allow the collection and diverting of exterior rainwater. Some water is channelled and deposited below the level of the depot, without entering into contact with the waste at any time.

Rainwater that falls on the part of the controlled depot that is fully operational and not definitively sealed (semi-clean water) is collected and diverted towards decantation reservoirs via a set of lengthwise and perimeter trenches built for this purpose. The water is stored in these reservoirs, and according to its composition, it is either pumped into the sewage network or treated together with the leachates at the depot's treatment plant.

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