Selenium-containing liquid of a processing system, processing method of wet desulfurization equipment and selenium-containing liquid

摘要

PROBLEM TO BE SOLVED: To provide a system for treating a selenium-containing liquid, a wet desulfurization device, and a method for treating a selenium-containing liquid, which can suppress the oxidation of tetravalent selenium in a selenium-containing liquid more appropriately.;SOLUTION: A system for treating a selenium-containing liquid in which bivalent manganese is added to the selenium-containing liquid, thereby suppressing oxidation of tetravalent selenium to hexavalent selenium, includes: a potential measurement unit for measuring an oxidation-reduction potential of the selenium-containing liquid; a pH measurement unit for measuring a pH value of the selenium-containing liquid; a detection unit for detecting whether the selenium-containing liquid is in a state where selenium stabilizes at a valence of 4 or higher, based on the measured oxidation-reduction potential and the measured pH value; and an addition unit for adding bivalent manganese into the selenium-containing liquid when the selenium-containing liquid is in a state where selenium stabilizes at a valence of 4 or higher.;COPYRIGHT: (C)2014,JPO&INPIT