METHOD FOR MEASURING AND CONTROLLING CHLORINE DIOXIDE CONCENTRATION IN SEAWATER AND DEVICE THEREFOR

摘要

PURPOSE: To easily measure the chlorine dioxide concn. and to use the low- pollution chlorine dioxide as the organism toxic chemical in a seawater utilizing system by subjecting the sampled seawater to spectrophotometry and measuring the chlorine dioxide concn. based on the obtained data of the specified wavelength corresponding to chlorine dioxide. ;CONSTITUTION: A chlorine dioxide generator 20 is provided to an equipment 10 of a power plant, etc., and chlorine dioxide is generated by using the seawater pumped up by a pump P1 and a raw material stored in a tank 21. The generated chlorine dioxide is stored in a tank 22, and the stored aq. chlorine dioxide soln. is introduced into a water channel 13 close to an intake 12 by a pump 2 to exterminate the organism such as flue mussel. At this time, seawater is pumped up by a pump P3, introduced into a spectrophotometer 24 through a pipeline 23 and subjected to spectrophotometry in an analytical part 24c, the chlorine dioxide concn. in the sampled water is measured based on the measured data of the specified wavelength corresponding to the optical characteristic of chlorine dioxide, and the amt. of an aq. chlorine dioxide soln. to be injected is controlled.;COPYRIGHT: (C)1995,JPO