| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a waste water treatment apparatus using soil the capacity of which for treating waste water can be made higher even when using a waste water storage tank having a small bottom surface area. <P>SOLUTION: The waste water treatment apparatus using soil is provided with: the waste water storage tank 2 arranged in the ground for storing waste water and overflowing the stored waste water into the surrounding soil; and an infiltration/diffusion sheet 1 which is buried in the surrounding ground of the waste water storage tank 2 and has water permeability and a water-passable property. The infiltration/diffusion sheet 1 has an infiltration part 4 which is abutted on an outer wall of the waste water storage tank 2, the wall surface having such a height that waste water overflows, and surrounds the outer wall and a diffusion part 5 which is connected to the lower portion of the infiltration part 4 and extended to the periphery of the waste water storage tank 2, so that the waste water overflowing from the periphery of the waste water storage tank 2 is diffused in the periphery of the waste water storage tank 2 by the infiltration/diffusion sheet 1. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
