Apparatus and method for treating storm water runoff

摘要

Disclosed is an apparatus and method for the treatment of storm water runoff to remove contaminants that accumulate in the storm water when it flows over paved surfaces in urban areas. The apparatus includes a basket (B) that has an outer surrounding water-permeable wall (10) and an inner water-permeable wall (12), spaced from and surrounded by the outer wall (10). A bed (14) of an absorbent, able to absorb contaminants in the storm water, is disposed in the space between the outer and inner walls, while allowing fluid communication between the walls. An inner drainage space (20) is defined by the inner wall and is in fluid communication with the absorbent.