Bioretention swale overflow filter

摘要

An apparatus and method for use in conjunction with grassy swales to collect and filter or otherwise treat dirty or polluted storm water runoff or other fluid is disclosed. The swale overflow screen device is used in connection with a catch basin. One or more swale overflow screen devices are installed within a bioretention swale, such that during periods of routine flow, at least a portion of storm water runoff or other passing fluids can enter the swale overflow screen device, through the catch basin, and be released to a drainage system.

主权项

1. An apparatus adapted to cooperatively engage with a bioretention swale, comprising:
(a) a rectangular top frame comprising at least one depressed surface along an inner perimeter of the rectangular top frame; (b) a plurality of side surfaces descending substantially downwardly from an outer perimeter of the rectangular top frame, wherein at least one side surface comprises a plurality of side openings positioned to permit substantially horizontal fluid flow therethrough; (c) an L-shaped lower ledge disposed below the plurality of side surfaces, the L-shaped lower ledge comprising a substantially horizontal region and a substantially vertical region, wherein the substantially horizontal region is formed from a substantially horizontal, inward extension of at least one side surface; and (d) a cover panel comprising a plurality of top openings, wherein at least a portion of the cover panel is disposed above the depressed surface of the rectangular top frame and at least a portion of the cover panel is impermeable to fluid flow.