| abstract |
(57) [Abstract] [Problem] Electrolysis is performed at a high current density to remove and purify hardly decomposable substances in waste liquid or wastewater, and wastewater such as development wastewater, wastewater from business sites, wastewater from landfills, etc. Provided are a method and an apparatus for electrochemically oxidatively decomposing a hardly decomposable compound such as an aromatic compound, an organic chlorine compound, an agricultural chemical, a dioxin, a PCB, and a water-soluble polymer contained in industrial wastewater. SOLUTION: A waste liquid or waste water containing a hardly decomposable substance is introduced into an electrolytic cell whose anode is a ferrite electrode, and Electrolytes at a high current density of 0 A / dm 2 or more, exerts a strong anodic oxidation effect, generates hypohalous acid and active oxygen in waste liquid or wastewater, and gives a strong oxidative decomposition effect. The oxidative decomposition is sufficiently repeated by the circulation channel connecting the electrolysis device and the intermediate storage tank. |