MULTISTAGE SEWAGE CLEANING APPARATUS
PROBLEM TO BE SOLVED: To provide a multistage sewage cleaning apparatus having a water permeation layer, which is reduced in its cost by being combined with treating soil layers used from heretofore and has an excellent treatment capability. SOLUTION: The sewage cleaning apparatus is provided with a...
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Zusammenfassung: | PROBLEM TO BE SOLVED: To provide a multistage sewage cleaning apparatus having a water permeation layer, which is reduced in its cost by being combined with treating soil layers used from heretofore and has an excellent treatment capability. SOLUTION: The sewage cleaning apparatus is provided with a plurality of stages of the treating soil layers 2-1 to 2-n like bricks in the water permeation layer 1, in which the water permeation layer 1 is formed of pumice. COPYRIGHT: (C)2004,JPO |
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