SYSTEM AND METHOD FOR MEASURING HYDROGEN PEROXIDE CONCENTRATION

To provide a system and method for measuring the concentration of hydrogen peroxide with which it is possible to continuously quantitate hydrogen peroxide in specimen water with high accuracy.SOLUTION: Provided is a method for measuring the concentration of hydrogen peroxide in specimen water sampled from a prescribed position of a water treatment process, the method including: a sampling step for sampling specimen water; a correction value acquisition step for measuring a dissolved oxygen concentration in specimen water or in treated water derived by treating specimen water by hydrogen peroxide decomposition means by first and second dissolved oxygen concentration measurement means, and acquiring a correction value that is a difference between the two dissolved oxygen concentration values; a measured value acquisition step for measuring a dissolved oxygen concentration in the specimen water by the first dissolved oxygen concentration measurement means, measuring a dissolved oxygen concentration in the treated water by the second dissolved oxygen concentration measurement means, and acquiring a measured value that is a difference between the two dissolved oxygen concentration values; and computation means for calculating a corrected hydrogen peroxide concentration from the measured value obtained in the measured value acquisition step and the correction value obtained in the correction value acquisition step.SELECTED DRAWING: Figure 7 【課題】検体水中の過酸化水素を連続的かつ高精度で定量することができる過酸化水素濃度の測定方法および測定システムを提供する。【解決手段】水処理プロセスの所定位置から採取した検体水中の過酸化水素濃度を測定する方法であって、検体水を採取する採取工程と、検体水又は検体水を過酸化水素分解手段で処理した処理水の溶存酸素濃度を第１溶存酸素濃度測定手段と第２溶存酸素濃度測定手段とで測定して、２つの溶存酸素濃度値の差分である補正値を取得する補正値取得工程と、検体水中の溶存酸素濃度を第１溶存酸素濃度測定手段で測定し、処理水中の溶存酸素濃度を第２溶存酸素濃度測定手段で測定して、２つの溶存酸素濃度値の差分である測定値を取得する測定値取得工程と、測定値取得工程で得られた測定値と補正値取得工程で得られた補正値とから、補正した過酸化水素濃度を算出する演算工程と、を含む。【選択図】図７