초록 ▼

A catch basin erosion containment filter assembly. The filter assembly includes a rigid frame and a containment bag attached at its open end to the frame. The frame is adapted to be seated and/or held in the horizontal or vertical opening to a catch basin. The bag has one or more layers, preferably

A catch basin erosion containment filter assembly. The filter assembly includes a rigid frame and a containment bag attached at its open end to the frame. The frame is adapted to be seated and/or held in the horizontal or vertical opening to a catch basin. The bag has one or more layers, preferably at least two layers. The outer layer is preferably a woven geotextile fabric and the inner layer is preferably a nonwoven geotextile fabric. A hydrocarbon absorbent layer, such as a nonwoven oileophilic fabric, may be located between the inner and outer layers for capturing spilled fuel and/or oil.

대표청구항 ▼

1. An erosion containment filter assembly adapted to be placed into a catch basin at the entrance thereto comprising: a rigid frame adapted to be held in place at said entrance to said catch basin; and a containment bag having side walls, a closed bottom and an open upper end, said containment b

1. An erosion containment filter assembly adapted to be placed into a catch basin at the entrance thereto comprising: a rigid frame adapted to be held in place at said entrance to said catch basin; and a containment bag having side walls, a closed bottom and an open upper end, said containment bag being attached to said frame at said open upper end, said walls and bottom of said containment bag having inner and outer layers, said outer layer being a woven geotextile having a higher porosity and strength than said inner layer. 2. The filter assembly of claim 1 wherein said inner layer of said containment bag is comprised of a nonwoven geotextile. 3. The filter assembly of claim 1 including a fuel absorption layer located between at least a portion of said inner and outer layers of said containment bag. 4. The filter assembly of claim 3 wherein said fuel absorption layer is a nonwoven oileophilic fabric. 5. The filter assembly of claim 4 wherein said nonwoven oileophilic fabric is comprised of melt blown polypropylene fibers. 6. The filter assembly of claim 1 including an overflow exit means communicating the interior of said containment bag with the exterior thereof, said overflow exit means being located adjacent the top of said containment bag, said overflow exit means being adapted to permit water reaching said overflow exit means to overflow from said containment bag into said catch basin. 7. The filter assembly of claim 6 wherein said overflow exit means is a spout located in the upper side of said containment bag. 8. The filter assembly of claim 6 wherein said overflow exit means is a pipe, said pipe extending through an opening in the bottom of said containment bag, the bottom of said containment bag surrounding said opening being attached to said pipe. 9. The filter assembly of claim 8 wherein said pipe is additionally attached to said frame. 10. The filter assembly of claim 1 wherein said frame is comprised of four upside down L-shaped frame members attached together at their junctures to form a rectangular configuration. 11. The filter assembly of claim 10 wherein said frame also includes diagonal cross bracing members extending between said junctures. 12. The filter assembly of claim 1 wherein said frame and said open upper end of said containment bag have perimeters that are coextensive.