| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a sewage treatment apparatus having a tertiary treatment tank which can be downsized by simplifying its structure, and prevent phosphorus from flowing out. <P>SOLUTION: In the sewage treatment apparatus having a treatment tank 5 having anaerobic tanks 1, 2 and an aerobic tank 3 and cleaning the sewage, and the tertiary treatment tank 5 connected downstream of the treatment tank 5, the tertiary treatment tank 5 has an iron ion supply means 34 that supplies iron ions into the tertiary treatment tank 5, and a magnet 41 that applies magnetic force to the inside of the tertiary treatment tank 5. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
