| 摘要 |
<p>PURPOSE:To coagulate and separate minute suspended matter and to obtain clear disposed water by a method wherein a liquid in which activated sludge with an excellent cohesive porperty is previously cultured is added to the water to be disposed containing the suspended matter. CONSTITUTION:Floating type activated sludge disposal is performed in such a manner that sludge is flowed into a culture tank 6 from a sludge feeding pipe 1 and a sludge branching pipe 9 together with sludge disposal in an organic membrane type activated sludge disposal plant 2 and air is supplied from a compressed air pipe 7. And the activated sludge with an excellent cohesive property of zooglea ramigera, etc. is cultured. A culture fouid in the culture tank 6 is added to the water to be disposed containing minute suspended matter with an inferior cohesive property flowing out to a mixing tank 3 through a water passing pipe 10 to ensure that it is added into the mixing tank 3 through the water passing pipe 10, and mixed and agitated, and the minute suspended matter is coagulated. The disposed water is flowed into a sedimentation tank 4, coagulated matter is precipitated and separated, and clear and purified disposed water is obtained.</p> |
