REGENERATING METHOD OF ELECTRODEIONIZATION SYSTEM AND METHOD FOR PURIFYING HYDROGEN PEROXIDE BY USING SAME

• Main Authors: YE, Hee Chang, UM, Myung Sup, KIM, Kyung Yeol
• Format: Patent
• Language: English; French; Korean
• Published: 04.07.2024
• Subjects: CHEMISTRY; COMPOUNDS THEREOF; INORGANIC CHEMISTRY; METALLURGY; NON-METALLIC ELEMENTS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TRANSPORTING; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The present invention relates to a regenerating method of an electrodeionization system and to a method for purifying hydrogen peroxide by using same. More specifically, the method comprises the steps of: stopping operation of the electrodeionization system used for purification of hydrogen peroxide; performing electrical regeneration while introducing ultrapure water into the electrodeionization system; and purifying hydrogen peroxide by restarting the electrodeionization system. The electrical regeneration is performed at a current density of 30 A/m2 to 100 A/m2. La présente invention concerne un procédé de régénération d'un système d'électrodésionisation et un procédé de purification de peroxyde d'hydrogène l'utilisant. Plus spécifiquement, le procédé comprend les étapes consistant à : arrêter le fonctionnement du système d'électrodésionisation utilisé pour la purification de peroxyde d'hydrogène ; effectuer une régénération électrique tout en introduisant de l'eau ultrapure dans le système d'électrodésionisation ; et purifier le peroxyde d'hydrogène par redémarrage du système d'électrodésionisation. La régénération électrique est effectuée à une densité de courant de 30 A/m2 à 100 A/m2. 본 발명은 전기탈이온 시스템의 재생 방법 및 그를 이용한 과산화수소의 정제 방법에 관한 것으로, 보다 상세하게는, 과산화수소의 정제에 사용되는 전기탈이온 시스템의 운전을 중단하는 단계; 상기 전기탈이온 시스템에 초순수를 투입하면서 전기 재생을 수행하는 단계; 및 상기 전기탈이온 시스템을 재가동하여 과산화수소의 정제를 수행하는 단계를 포함한다. 상기 전기 재생은, 30 A/m2 내지 100 A/m2의 전류 밀도로 수행된다.