Method for detecting a concentration of chlorate-ions in an aqueous solution, apparatus for detecting a concentration of chlorate-ions and control unit

摘要

An apparatus, a control unit and a method are provided for detecting a concentration of chlorate-ions in an aqueous solution containing different types of chlorine oxidants. By applying energy to a defined volume of the aqueous solution to trigger a transformation of substantially all chlorine oxidants and/or chlorine therein to chloride and/or chlorate, and detecting the concentration of chlorate-ions contained in the defined volume, a solution can be provided that enables a simple and cheap measurement for a concentration of chlorate ions in an aqueous solution and that is capable for online measurement of such chlorate concentrations.

主权项

1. A method for determining an actual concentration of chlorate ions in an aqueous solution, comprising:
detecting a total concentration of chlorine, chlorite, and chlorine dioxide in a defined volume of the aqueous solution; applying energy to the defined volume of the aqueous solution to transform substantially all chlorine species therein to chloride and chlorate; detecting a concentration of chlorate ions in the defined volume after the energy is applied; and subtracting the total concentration of chlorine, chlorite, and chlorine dioxide from the detected concentration of chlorate ions contained in the defined volume after the energy is applied to determine the actual concentration of chlorate ions in the aqueous solution.