Flocculant injection amount control method in coagulation sedimentation processing

摘要

PROBLEM TO BE SOLVED: To provide a flocculant injection amount control method in a coagulation sedimentation treatment capable of optimizing an injection amount of a flocculant by a simple method, concerning a coagulation sedimentation treatment of raw water (industrial water or the like).SOLUTION: Concerning a flocculant injection amount control method in a coagulation sedimentation treatment, in the coagulation sedimentation treatment, a coagulation sedimentation treatment is performed by changing an injection amount of a flocculant in a plurality of stages in some cycle, and the optimum flocculant injection amount is selected based on a water quality measurement result of treatment water in each stage.SELECTED DRAWING: Figure 1