Patent ID: 8002974
Filing Date: 2011-08-23
Classification: C02F,E03F,Y02A

Abstract:
1. A stormwater management system comprising: a vessel having a bottom and circumferential sealed sidewalls joined thereto; a filter chamber containing layered particulate filter media disposed within the vessel and positioned adjacent an end one of said sidewalls and said bottom, the filter media including a lower coarser filter media layer and an upper finer filter media layer thereabove; a filter chamber inlet operatively coupled with an upper region of the filter chamber above the upper filter media layer, the filter chamber inlet and the filter chamber being configured when stormwater is present to till the filter chamber with water up to a maximum water level above the bottom of the vessel; a purified stormwater outlet operatively coupled with a lower extent of the vessel, the outlet including a first conduit portion extending generally horizontally from a lower exterior surface of said one sidewall, a second conduit portion extending upwardly from an outlet end of the first conduit portion, a third conduit portion extending generally horizontally from an outlet end of the second conduit portion, a fourth conduit portion extending downwardly from an outlet end of the third conduit, and a fifth conduit portion extending generally horizontally from an outlet end of the fourth conduit portion, wherein the outlet end of the first conduit portion and an inlet end of the fifth conduit portion are generally concentric, wherein the third conduit portion is generally disposed above the first conduit portion and the fifth conduit portion, wherein a height of the third conduit portion relative to the bottom of the vessel determines a height of the water level within the filtration chamber, and wherein the second, third and fourth conduit portions are rotatable as a unit about an axis concentric with the outlet end of the first conduit portion and with the inlet end of the fifth conduit portion, and whereby the height of the third conduit portion relative to the bottom of the vessel is adjustable and maintains the level of water in the filtration chamber at or below said maximum water level; and a dispersing structure operatively coupled with the filter chamber inlet to substantially evenly disperse water from the inlet as water flows therefrom onto an upper surface of the upper media layer.