Silt and debris filtering system for storm drains

Abstract

An apparatus for removing debris from water passing through a storm drain comprises a frame adapted to be positioned underneath a storm grate for receiving the water, the frame having a bottom side and major and minor sidewalls, the major sidewalls having openings therein for allowing water to pass; and a filter removably insertable along at least a portion of the major sidewalls for filtering debris from the water.

1 . An apparatus for removing and collecting debris from water passing through a storm drain, said apparatus comprising:
 a frame adapted to be positioned beneath a storm grate for receiving said water, the frame having a solid bottom surface, an open top, minor side walls, and grated major side walls extending between each of said minor side walls, said major side walls in alignment with an axis of a storm main;   at least a first and second filter member removably, slidably insertable into channels disposed interiorly along each of said first and second minor side walls and parallel to each of said grated major side walls for filtering debris from said water; and   means for removing said frame from beneath said storm grate.   
     
     
         2 . The apparatus in accordance with  claim 1 , wherein said solid bottom surface includes a central ridge along a longitudinal axis of the frame such that said bottom surface is pitched downwardly from said central ridge toward said grated major side walls. 
     
     
         3 . The apparatus in accordance with  claim 1  wherein said minor side walls are formed on an upper periphery with an outwardly extending flange cooperative with a support lip secured to inner walls of said storm drain for support of said frame beneath said storm grate. 
     
     
         4 . The apparatus in accordance with  claim 3  wherein said minor side walls are solid and formed within at least one overflow aperture proximate said upper periphery. 
     
     
         5 . The apparatus in accordance with  claim 3  wherein said support lip formed on, and positioned in said interior wall of said storm drain comprises an L-shaped portion of angle iron having a segmented horizontal surface for support of said outwardly extending lip of said minor side walls, said segmented horizontal surface allowing for a removal hook to engage an overflow aperture in said minor side walls for the upward lifting and removal of said frame from said storm drain. 
     
     
         6 . The apparatus in accordance with  claim 3  wherein said means for removing said frame from beneath said storm grate after said storm grate removal comprising a hook member formed on said flange extending outwardly from said upper periphery of said minor side walls. 
     
     
         7 . The apparatus of  claim 1  wherein said frame has a rectangular shape. 
     
     
         8 . The apparatus in accordance with  claim 1  wherein said filter member is formed with a peripheral frame about said filter media. 
     
     
         9 . The apparatus of  claim 1  wherein at least one of said filters comprises a mesh screen. 
     
     
         10 . The apparatus of  claim 1  wherein at least one of said filters comprises a filter for collecting petroleum hydrocarbons. 
     
     
         11 . The apparatus of  claim 1  wherein at least one of said filters comprises a mesh screen in combination with a filter for collecting petroleum hydrocarbons. 
     
     
         12 . The apparatus of  claim 1  further comprising replaceable filters. 
     
     
         13 . The apparatus of  claim 1  further comprising a support structure for coupling a portion of said frame to a wall of said storm drain.