Coagulation sedimentation processing apparatus and coagulation sedimentation processing method

摘要

PROBLEM TO BE SOLVED: To provide a filler capable of suppressing the lowering of the boundary surface of a sludge blanket and to provide a flocculation and precipitation treatment device used with the filler.SOLUTION: In a flocculation and precipitation treatment device 100 where inflow water containing flocculated floc is supplied and the flocculated floc is separated and removed from the inflow water by being passed in a sludge blanket S, a filler 50 whose specific gravity is larger than sludge in the sludge blanket S functions as a member for the bottom-up of the sludge blanket S when the sludge blanket S contracts by being charged into the flocculation and precipitation treatment device 100.SELECTED DRAWING: Figure 1