| 摘要 |
PROBLEM TO BE SOLVED: To provide a medicine addition amount control method and a medicine addition amount control device capable of shortening time required for adjusting an amount of addition of medicine to a proper amount.SOLUTION: A medicine addition amount control method is for controlling an amount of addition of medicine to be added to liquid so that the residual concentration at a target spot becomes equal to or more than target concentration at an entrance of a reaction zone, and has: a residual concentration calculation step (S50) of calculating secular change of the residual concentration of the medicine at the target spot when the medicine is added with arbitrary concentration A in the case of assuming that the reaction zone is a perfect mixing type and no medicine is consumed; a residual concentration measurement step (S30) of measuring the secular change of the residual concentration of the medicine at the target spot when the medicine is actually added with the concentration A; and a medicine addition amount determination step (S60) of determining the amount of addition of the medicine based on a residual concentration calculation value in the residual concentration calculation step at a point of time when the residual concentration of the medicine measured in the residual concentration measurement step reaches or is presumed to reach the target concentration. |
