| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a flow carrier biological treatment tank surely and efficiently performing a management work like exchange or recovery of the flow carrier used in the biological treatment tank, without draining water. <P>SOLUTION: This flow carrier biological treatment tank 1 is provided with a tank body 2 formed in a rectangular parallelepiped space opened at the top, a flow-in pipe 3 running drain into the tank body 2 from the upper part, a flow-out pipe 4 running out treated water from the inside of the tank 2, an air supply pipe 5 sending air to a bottom face of the tank body 2, and a screen body 6 attached inside the tank body 2. A lot of the flow carriers 7 remain inside the screen body 6, and are prevented from flowing out to the outside by the screen body 6. By rasing up the screen body 6, the flow carriers 7 are collected to be recovered and replaced. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
