| 摘要 |
PROBLEM TO BE SOLVED: To provide a crystallization reaction apparatus which is provided with a means for vaporizing/concentrating the treated water and does not require the severe management of its crystallization reaction tank. SOLUTION: This crystallization reaction apparatus is provided with the crystallization reaction tank 1 in which a seed crystal 2 is packed so that crystallization reaction is promoted for removing the component to be crystallized from raw water, a raw water supplying means for supplying the raw water to the tank 1, a crystallizing liquid chemical supplying means for supplying a crystallizing liquid chemical to the tank 1, a treated water circulating means for returning at least a part of the treated water discharged from the tank 1 to the tank 1 and the vaporizing/concentrating means for heating/concentrating the residual treated water for using as circulation water, discharging the generated steam to the outside and returning at least a part of the generated concentrate to the tank 1.
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