| 摘要 |
PURPOSE: To rationalize the greening of a roof without wasting precious water resource by reusing the water used for the greening of the roof as a waste water reuse system for water closet, etc., cleaning the reused waste water and circulating to the roof for greening. CONSTITUTION: Water is cleaned in a water-collection trench 10 constructed in a ground soil 2G formed on a roof 2 of a building 1. The excess water cleaned by the water-collection trench 10 is collected and reused as a waste water reuse system for water closet 1T, etc. The water discharged from the water closet 1T is cleaned with a settling separation tank 6 or a septic tank 7, pumped up to the roof 2 and reused for the greening of the roof. |
