| 摘要 |
The infiltrative capacity and fluid storage capacity of leaching trenches, beds, and pits (collectively called leaching "fields" herein) are increased by means of fluid accumulators placed within the field and spaced from the side and bottom walls thereof by infill (crushed stone, gravel stone, etc.). Effluent discharged to the field accumulates in the infill until it exceeds a predetermined level with respect to the accumulators and then proceeds to fill the accumulators. When the effluent level in the infill later subsides, effluent is discharged from the accumulators into the infill for drainage into the soil.
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