AGGREGATION STATE DETECTION METHOD, AGGREGATION STATE CONTROL METHOD, AGGREGATION STATE DETECTION DEVICE AND AGGREGATION STATE CONTROL DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a method more accurately detecting and controlling an aggregation state of aggregated matter.SOLUTION: An aggregation state detection method comprises steps of: aggregating solids in water to be treated in a tank by using agents, and obtaining aggregated matter including the solids and gel-like materials formed so as to surround the solids; taking out the aggregate matter from an inside of the tank, and obtaining a light field image and a phase difference image of the aggregated matter by imaging means; performing image processing with respect to the light field image and the phase difference image, and obtaining a difference image between the light field image and the phase difference image; and identifying the solids and the gel-like materials in the aggregate matter on the basis of the difference image.