Importance

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Abstract

Leak prevention system for a liquid retention pond (10), the system comprising an upper membrane (3) to be covered by the liquid (1), a lower membrane (4) disposed on the bottom of the pond and joined in a sealed manner to the upper membrane on a peripheral portion to thereby form a normally sealed envelope (20) delimited by the two membranes, said envelope being filled with draining material (2), a plurality of passageways (6) disposed substantially horizontally in the draining material, a pumping device (5) adapted to generate an air vacuum in the drains, to suck leakage liquid that may have passed through the upper membrane, such that pollution of the surrounding soil is avoided in the event of a liquid leak through the upper membrane.

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First Claim