| 摘要 |
<p>PURPOSE:To make clogging hard to generate and to execute purifying treatment over a long period of time by receiving contact materials whose specific surface areas become large toward the treatment region on an outflow side and forming opening parts increasing in number toward an outflow direction to wall parts and partition wall parts. CONSTITUTION:A treatment area formed by receiving a contact material 20 for the adhesion of bacteria in the space surrounded by wall parts 13, 14 are partitioned into the part 17 on the take-in side of water to be treated, an intermediate part 18 and the part 19 on an outflow side by partition wall parts 15, 16. Contact materials 20 whose specific surface areas become large toward the treatment region on the outflow side are received in the partitioned parts 17, 18, 19 and opening parts 23 increasing in number toward an outflow direction are formed to the wall parts 13, 14 and the partition wall parts 15, 16. As a result, clogging becomes hard to generate and purifying treatment can be performed over a long period of time and maintenance control becomes almost unnecessary.</p> |
