Patent ID: 9605417
Date: 2017-03-28
CPC Classifications: C02F,E03B,E04D,Y02A,Y02B

Claim:
1. A system for harvesting rainwater in a skirt building, the skirt building comprising a main building and a podium building, the podium building being disposed below the main building and supporting the main building, the system comprising: a) a standpipe; b) a buffer channel comprising a first outlet; c) a filter channel comprising a second inlet, a second outlet, and a plurality of sections; d) a green roof comprising a vegetation region, a water channel, and a bottom filtering layer; and e) a drainage pipe; wherein: the standpipe is adapted to be arranged on the main building and is connected to the buffer channel where the energy of rainwater flowing out of the standpipe is dissipated; the buffer channel, the filter channel, and the green roof are arranged on the podium building; the first outlet of the buffer channel communicates with the second inlet of the filter channel; each of the plurality of sections is filled with a matrix material, the matrix material in each one of the plurality of sections is different from that in another one of the plurality of sections; and the matrix material comprises crushed stone, coarse sand, fine sand, and slag; each one of the plurality of sections is separated from another one of the plurality of sections by grilles and geotextiles; the second outlet of the filter channel is connected to one end of the water channel; the water channel is disposed in the vegetation region; a water outlet is disposed at another end of the water channel; the bottom filtering layer is disposed below the water channel and the vegetation region; the bottom filtering layer from top to bottom comprises soil, fine gravel, pebbles, slag, and coarse gravel; and the drainage pipe is disposed inside the pebbles of the bottom filtering layer for collecting water form the bottom filtering layer.