FLOCCULATION TREATMENT METHOD, FLOCCULATION TREATMENT DEVICE AND WATER TREATMENT APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide a flocculation treatment method, a flocculation treatment device and a water treatment apparatus where an aqueous solution sufficiently dissolved with a flocculant is added into water to be treated and highly efficient flocculation treatment can be realized.SOLUTION: A flocculation treatment device comprises: a flocculant aqueous solution storage tank 1 with an agitator 5 to store a flocculant aqueous solution; a particle size distribution measuring device 50 to measure the particle size distribution of the flocculant aqueous solution in the flocculant aqueous solution storage tank 1; a flocculation tank 11 to form an aggregate by mixing the water to be treated with the added flocculant aqueous solution; an aggregate removal part 9 to remove the aggregate from aggregate-containing treatment water; and a controlling unit 6 to control the agitator 5 so that a median diameter in the particle size distribution of the flocculant aqueous solution based on the measured particle size distribution is 1.0 m or less.