| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a sewage treatment system constituted so as not only to perform aerobic treatment in a storage tank but also to prevent sludge from being stagnated and turned anaerobic in a sedimentation tank. <P>SOLUTION: The sewage treatment system is equipped with a storage tank 1 which is equipped with an air diffuser 13 and stores sewage, the aeration tank 2 equipped with an air diffuser 21, a transfer means 4 for transferring sewage to the aeration tank 2 from the storage tank 1 while adjusting its flow rate, the sedimentation tank 3 for receiving the sewage of the aeration tank 2 to apply sedimentation treatment to it, an air supply pipe 53 for supplying air into the sedimentation tank 3 and a return means 6 for returning sewage to the storage tank 1 from the sedimentation tank 3. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
