| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a waste water treatment apparatus using a membrane filtering device with a small area of installation and good filtering efficiency. SOLUTION: In a waste water treatment apparatus 1 wherein anaerobic tanks 2 and 3, a membrane filtering tank 25 and a disinfection tank and a treated water tank 35 are provided, an overflow pipe 29 connecting the membrane filtering tank 25 with the anaerobic tank 3 is provided above the membrane filtering device and water to be treated is filtered by water head pressure caused by fall head between the overflow pipe 29 and an outlet 34 of the membrane filtering device and it is ordinarily filtered by water head pressure between the height of an advection hole of the disinfection tank and the water level of the overflow pipe 29.</p> |
