| 摘要 |
PURPOSE: A penetration and undercurrent system with a purification waterspout and a double drainpipe is provided to simultaneously perform an undercurrent and penetration function of rain. CONSTITUTION: A penetration and undercurrent system comprises a base layer(300), a purification waterspout(100) and a double drainpipe(200). The base layer is made of a gravel layer and a nonwoven layer. The purification waterspout is installed in the upper side of the base layer. The purification waterspout is composed of a sump tank, a settling box and filter media box. The purification waterspout back purifies the initial contamination of effluent. The double drainpipe is installed in the upper side of the base layer. The double drainpipe is composed of a water permeable pipe, a drainpipe and a grating cover. |
