| 摘要 |
PROBLEM TO BE SOLVED: To provide a system suitable for permeating wastewater such as rainwater into the ground. SOLUTION: This permeation system comprises a permeation side ditch 20, a permeation and storage tank 30, and a water-permeable stratum between the side ditch 20 and the storage tank 30. In the side ditch 20, side walls 21a and 21c and a bottom wall 21b at least partially have water permeability, so as to make the wastewater percolate underground. The storage tank 30 comprises a void member 31, and a water-permeable sheet 32 which constitutes an outer peripheral layer of the storage tank. Water percolating underground from the side ditch 20 is partially stored in the storage tank 30, and gradually discharged underground again. COPYRIGHT: (C)2008,JPO&INPIT
|
