BORON-CONTAINING WATER TREATMENT METHOD

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PROBLEM TO BE SOLVED : To provide a boron-containing water treatment method by which boron in boron-containing water containing phosphorous and/or silica is removed by being adsorbed in a granulated body on which hydrated oxide of rare earth element is deposited, in a stable and efficient manner by preventing reduction in the boron adsorbing properties of the granulated body.SOLUTION : The boron-containing water treatment method is characterized in that when the boron-containing water containing phosphorous and/or silica is brought into contact with the granulated body on which the hydrated oxide of rare earth element is deposited and the boron is removed by being adsorbed in the granulated body, phosphorous and/or silica in the boron-containing water is removed beforehand, and the water is then brought into contact with the granulated body. By removing phosphorous and/or silica beforehand, the reduction in the boron adsorbing properties of the granulated body caused by phosphorous and/or silica can be securely prevented.