| 摘要 |
PROBLEM TO BE SOLVED: To make it possible to effectively and inexpensively use land by evaporating the moisture diffused into soil and replenishing the soil with dissolved matter and residues. SOLUTION: A ditch of a length meeting the number of persons for treatment is dug in the treatment land. Waterproof sheets 10 are laid on the bottom and a pool 1 is installed horizontally. Shades 2 are put therein. This pool 1 and a transporting pipe 6 are connected by an elbow. Nets 3 are put in both sides of the shades 2 and the ditch 7 is back filled by mixing the soil and soil conditioners 9 of pumice. Septic tank treated water is poured into the pool without a disinfecting liquid. In the case of conservancy, the urine fully matured in a large-sized tank is sent through the transportation pipe 6 into the pool 1 by utilizing a pump or fall. The conservancy is automated by a level switch and the specified amt. is discharged several times a month, by which a surplus is obtd. without the extension of the pool 1. The soil around the ditch 7 is many times more than the soil therein and capillarity acts over a wide range. The evaporation capability is extremely large.
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