| 摘要 |
PROBLEM TO BE SOLVED: To provide a flocculation treatment method enhancing efficiency of separation of flocculation flocks by using magnetized magnetic body powder in a method in which a flocculating is added to a liquid to be treated to perform a flocculation treatment, and then enabling to obtain a high quality of treated liquid by the flocculation treatment with a simple device and being easy in recovering of the magnetized magnetic body powder. SOLUTION: A liquid 5 to be treated is introduced into a first reaction tank 1 to be added an inorganic flocculant 6a, strongly stirred to allow to react, and a high molecular flocculant 6b is added to the reaction liquid 10 which is introduced into a second reaction tank 2, and the liquid 10 is slowly stirred to grow flocks, introduced into a flock collection tank 3, and passed through a fluidized bed 8 of the magnetization magnetic body as an upward couterflow, and the flocks are caught and the concentrated flocks 13 containing the magnetic body powder are passed through a magnetic body separator to recover the magnetization magnetic body and return it to the flock collection tank 3. |
