| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a wastewater treatment apparatus using a shaking bed hard to cause the clogging of an air diffusion part, easy in maintenance and capable of being easily backwashed by a simple constitution in order to prevent the clogging of the air diffusion part. <P>SOLUTION: The wastewater treatment apparatus is equipped with a treatment tank 2 for biologically treating wastewater, the shaking bed 4 arranged in the treatment tank 2, the gas-liquid mixing part 5 arranged to the bottom part of the treatment tank 2 at a position where there is no shaking bed 4 thereabove and the air supply pipe 13 connected to the gas-liquid mixing part 5 to supply air, and is installed with a backwashing means for sending the gas-liquid mixed flow formed from the gas-liquid mixing part 5 at the time of backwashing from the below of the shaking bed 4. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
