MEASURING DEVICE, MONITORING METHOD AND MONITORING SYSTEM OF TOTAL RESIDUAL OXIDANTS(TRO) CONCENTRATION WITHIN BALLAST WATER

摘要

PURPOSE: Measuring device, monitoring method and system for the concentration of remaining oxidant in ballast water are provided to measure the concentration of remaining oxidant in ballast water and monitor the concentration of TRO of a system for handling ballast water. CONSTITUTION: A monitoring method for the concentration of remaining oxidant in ballast water is as follows. Indication reagent reacting to remaining oxidant in ballast water and showing a color is injected. The concentration of the remaining oxidant in the ballast water is measured based on the absorbance of the indication reagent. The indication reagent is N and N-diethyl-p-phenylene diamine salt. When the ballast water is discharged, the measuring device measures the concentration of the remaining oxidant in the ballast water discharged. It is monitored whether the concentration of the remaining oxidant measured is below a predetermined value.