| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a greening system suppressing outflow of rainwater from an artificial building while reducing heat island phenomenon, facilitating water supply management and maintenance, and further effectively using rainwater. <P>SOLUTION: This greening system is such that rainwater fell on a greening tank 2 infiltrates soil of the greening tank 2 and is stored in a bottom water storage tank 4, water flowing out to the surface of soil 6 when the bottom water storage tank 4 becomes full is stored from an overflow part 7 to a first lower water tank 11, and when a prescribed amount of water is stored in the first lower water tank 11, water flows from an overflow part 13 to a second lower water tank 12 and is stored. Water in the first lower water tank 11 is stored in an upper water storage tank 17 with a storage pump 19, and used for watering of a watering device 21. Water in the second lower water tank 12 is used for other service water such as flush toilet service water, and supplied to the first lower water tank 11 when the water level becomes higher than water in the first lower water tank 11 to open a check valve 14. <P>COPYRIGHT: (C)2008,JPO&INPIT |
