使用言語 / Language used
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| 「Current state of pond」 |
| It is a current state that colloidal sediment piles up in the bottom, part floats on water, and the entire pond is dirty. |
| 「Purport of proposal」 |
| It collects, it dehydrates from the colloidal sediment that piles up in the bottom, and the purification processing of the pond is done. It dehydrates to the state that the collected colloidal sediment can be transported, and it recycles for reclamation it and banking. |
