| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve a problem that there has been needed to remove sludge and to clean water quantity because the living of fishery products such as shrimps has been hindered because of the lack of oxygen in water by the increase of nitrogen and phosphor contents caused by the sludge generated by the precipitation of night soil excreted by the fishery products such as the shrimps or fed feed in a fish firm of the fishery products such as the shrimps. <P>SOLUTION: Nutrient-rich water D in the body of water in which aqueous plants A are present in the bottom of the body of water and generated matters B such as algae grow around the same, and plankton and the generated matter B becoming the feed of the fishery products C are present, is taken out, is caused to flow through a water flowing tank, and is caused to pass among water-side plants E growing in the water flowing tank, thereby the nutrient-rich water D is cleaned by the cleaning function of the water-side plants E and circulated to the body of water. <P>COPYRIGHT: (C)2013,JPO&INPIT |
