| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To enhance the biological treatment efficiency of a carrier fluidizing part in one biological treatment tank. <P>SOLUTION: This water-purifier tank 1 is constituted so that the carrier fluidizing part 6 for fluidizing carriers 13 in water to be treated by the aeration using an air diffusion pipe 16, and a filter part 7, in which the carriers 13 are stagnated in a state that a freely air diffusible backwashing pipe 17 is provided to enable the backwashing fluidization of the carriers 13, are provided in the same biological treatment tank. A partition wall 14 for partioning the biological treatment tank in a lateral direction is provided in the upper or lower part of the biological treatment tank to form a carrier stagnating part 20 in the section on one side partitioned by the partition wall 14 and the backwashing pipe 17 is arranged under the carrier stagnating part 20 to form the filter part 7 while the air diffusion pipe 16 is arranged to the lower part in the section on the other side partitioned by the partition wall 14 to form the carrier fluidizing part 6. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
