| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a drain treating deice and treating method which can make the device compact, the maintenance easy and the running cost low. SOLUTION: The drain treating device 20 which treats a water 2 to be treated in a treating vessel 1 containing activated sludge by microorganism immobilized carriers has a filter body 10 which has a fibrous body bundle 12 bundled with plural fibrous bodies 11 and in which part (immersing part) of the fibrous body bundle 12 is immersed into the water 2 to be treated and an aerating means which aerates the water 2 to be treated. When the water 2 to be treated is filtered by the filter body 10 in such a case, the outflow of the activated sludge is sufficiently prevented. Even if the carrier are brought into collision against the immersing part of the fibrous body bundle 12 by the aeration, the impact force in the immersing part is dispersed to the respective fibrous bodies 11 and the damage of the fibrous body bundle 12 is sufficiently prevented.</p> |
