| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a small-sized water-purifying apparatus for fish and shellfish, capable of dealing with a water tank used for appreciating, transporting, raising the fish and shellfish, etc., and capable of raising the fish and shellfish for a long period only by simple maintenance and management. <P>SOLUTION: In the water tank for the fish and shellfish, an air reservoir is formed by installing a plurality of partition plates in a culturing chamber filled with a filter medium and used for culturing aerobic or anaerobic microorganisms, dissolved oxygen-containing water formed by supplying air or oxygen to the chamber is circulated through the water tank and the culturing chamber, and the water tank is miniaturized by enhancing water purification treatment ability of the microorganisms, so that the fish and shellfish are raised for the long period only by cleaning a filter and a remover. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
