DEVICE FOR THE PASSIVE DEPOLLUTION OF UNDERGROUND WATER

摘要

The invention relates to a device for depolluting petroleum product-contaminated underground water, comprising an attachment chain (1), a supporting tube (2) coupled to the attachment chain (1) by means of a supporting ring (3), a cap (4) located at the lower end of the supporting tube (2), a collecting tube (5) wherein a sorption material (8) based on oligotrophic peat is provided, a perforated plate (6) mounted at the lower part of the collecting tube (5) and on which a hydrophobic material (7) is provided to prevent water from entering the interior of the tube (5) while permitting only the passing of the petroleum product.