| 摘要 |
The present invention relates to a bridge type nonpoint pollution source decreasing apparatus which is installed in the lower part of the road surface of a bridge. According to the present invention, a nonpoint pollution source decreasing apparatus includes: a housing having a rainwater inlet formed in the upper part thereof; a chamber which is installed in the housing and has a rainwater separation space to collect rainwater downward; a precipitate discharging pipe for selectively discharging the precipitate which is precipitated by the specific gravity difference in the lower part of the chamber; a water level controlling means for controlling the level of rainwater introduced into the chamber; and a rainwater discharging pipe for selectively discharging the rainwater remaining after the level of rainwater is controlled by the water level controlling means. An oil adsorbent cartridge and an illite cartridge are vertically arranged in the chamber in order. According to the present invention, the bridge type nonpoint pollution source decreasing apparatus easily treats antifreeze, heavy metal, road garbage, tire dusts, earth and sand, and the like by itself, and can be easily maintained and easily installed in a narrow bridge because of a compact structure. |
