| 摘要 |
PURPOSE: A multi-leveled facility for reducing non-point source pollution is provided to improve the convenience of maintenance by selectively replacing a filtering bath in which pore clogging phenomenon is occurred. CONSTITUTION: A multi-leveled facility for reducing non-point source pollution includes a main body, a settling bath(120), a floatation preventive protrusion(130), partitions, a first filtering bath(140), a second filtering bath(160), and a third filtering bath(180). A rainwater-through-path is formed at the upper part or the lower part of a partition. The filtering baths are separated from the bottom of the main body. The first filtering bath and the second filtering bath are installed between partitions. Initial rainwater treated in the settling bath is filtered and absorbed in the first filtering bath filled with filtering media. The rainwater treated in the first filtering bath is filtered and absorbed in a second filtering bath. The third filtering bath is installed between a partition and a draining pipe. Rainwater treated in the second filtering bath is filtered and absorbed in the third filtering bath. |
