초록 ▼

A removable storm drain filter to be used in combination with an absorbent media, and a catch basin having grated inlet and standpipe outlet to remove pollutants carried in surface drainage. The storm drain filter is designed to fit within a catch basin, below the grated inlet, and upon the upward t

A removable storm drain filter to be used in combination with an absorbent media, and a catch basin having grated inlet and standpipe outlet to remove pollutants carried in surface drainage. The storm drain filter is designed to fit within a catch basin, below the grated inlet, and upon the upward terminus of a vertical stand pipe. A filtration vessel (50) is provided to contain absorbent media and to provide a primary flow path through the absorbent media and a secondary flow path (bypass) for high flows. The filter includes a cover plate (70), structurally supported by and above the filtration vessel, to prevent deposition of sediment upon the absorbent media and to prevent direct striking of the absorbent media by influent storm water. The storm drain filter further includes a floatables screen (60) to prevent clogging of the absorbent media by floating debris such as leaves, pine needles, and cigarette butts. A lift handle (80) is provided to facilitate handling of the fully assembled filter by a human being without special equipment.

대표청구항 ▼

[ I claim:] [1.] A removable storm drain filter to be used in combination with an absorbent media, and a catch basin having grated inlet and standpipe outlet, for purposes of removing pollutants carried in surface drainage, comprising:(a) a filtration vessel for containing absorbent media, said filt

[ I claim:] [1.] A removable storm drain filter to be used in combination with an absorbent media, and a catch basin having grated inlet and standpipe outlet, for purposes of removing pollutants carried in surface drainage, comprising:(a) a filtration vessel for containing absorbent media, said filtration vessel having solid side walls, a perforated bottom, and a perforated lid;(b) means for accessing said filtration vessel to permit inspecting and changing absorbent media;(c) bracing means for supporting said filtration vessel upon a standpipe;(d) sealing means for making a watertight seal between said bracing means and the standpipe;(e) weir means for creating sufficient pressure head upon said perforated lid to force the passage of storm water through said filtration vessel, and for bypassing high flows without disruption of the absorbent media;(f) a removable cover plate for dissipating kinetic energy of incoming storm water between the catch basin grated inlet and said filtration vessel, and for directing influent sediment away from said perforated lid;(g) means for supporting and securing said cover plate above and upon said filtration vessel;(h) floatables screen for preventing the accumulation of floating litter upon said perforated lid;(i) means for supporting and securing said floatables screen upon said filtration vessel;(j) means to facilitate installing, removing, and carrying the fully assembled apparatus by a human being; reby sedimentation, straining of floating litter, and dissipation of kinetic energy occur prior to contact with absorbent media so as to prevent clogging and scouring of media, and flow control is provided to prevent scouring of media even during high flows.