| abstract |
(57) [Problem] To provide a flocculation / sedimentation method in which a magnetic powder is used as a seed agent to generate a magnetic floc, thereby increasing the sedimentation speed and facilitating the recovery and reuse of the seed agent. A method and apparatus are provided. According to the present invention, a magnetic powder having a large specific gravity is generated by adding a magnetic powder as a seed agent at the time of floc generation, and the magnetic floc is recovered as sludge and then recovered by recovering the magnetic powder. To perform continuous operation. |