| 摘要 |
<p>PURPOSE:To provide a filthy-water purifying apparatus, in which one end of an air supply pipe is opened adjacently of a rotor nlade provided in a filthy-water circulating tube that is disposed centrally of a fixed filter bed, and filthy water containing dissolved air is circulated through the filter bed, whereby structure and maintenance of the apparatus can be simplified and floor space required for installation can be reduced.</p> |
