| 摘要 |
<p>PROBLEM TO BE SOLVED: To purify eutrophic water in a closed water area, etc., at a low cost and without destroying a scene in the surrounding with a comparatively simple system. SOLUTION: A well point 1 is provided in a position where the water in the water area does not directly flows in and the water in the water area infiltrates into soil and flows in. The soil-infiltrating water, which flows into the well point 1 through an intake 2, is forcibly pumped up by a pumping means 5 and is returned to the water area. The water in the water area is forcibly circulated via the soil. thereby allowing the soil to capture pollutants incorporated in the water in the water area.</p> |
