CURB-INLET STORM DRAIN SYSTEMS FOR FILTERING TRASH AND HYDROCARBONS

摘要

A modular insert forcurb-inlet storm drains createsa composite collection systemfor trash and for oil or otherhydrocarbons and relatedchemicals. A hopper (110)contains a multitude of irregular,macroscopic fragments (130)of a hydrophobic, compliant,oil-absorbent, copolymermaterial having high surfacearea. Preferably, the materialis formed with a binder in anovel extrusion process. Thefragments are held in place bya removable bottom plate (140),which allows replacement ofthe filtering fragments (130), and an internal basket (120).Trash and debris are collectedin the internal basket (120). Thehopper (110) is configured tobe suspended in a storm drain(100) adjacent to a curb inlet ona bracket and can be installed orserviced through a conventionalmanhole entry. The hopper(110) has side cutouts (116,117) that permit lateral overflowfrom one of the modular unitsto an adjacent one.