Patent ID: 8303797
Filing Date: 2012-11-06
Classification: C25B,G03F

Abstract:
1. A cleaning system comprising: a sulfuric acid electrolytic portion having an anode, a cathode, a diaphragm which is provided between the anode and the cathode, an anode chamber which is demarcated between the anode and the diaphragm and a cathode chamber which is demarcated between the cathode and the diaphragm, the sulfuric acid electrolytic portion being configured to electrolyze a sulfuric acid solution to generate an oxidizing substance in the anode chamber; a concentrated sulfuric acid supply portion configured to supply a concentrated sulfuric acid solution to the anode chamber; a tank storing the oxidizing substance generated by the sulfuric acid electrolytic portion; and a cleaning treatment portion configured to carry out cleaning treatment of an object to be cleaned using an oxidizing solution comprising the oxidizing substance supplied from the tank, wherein the cleaning system further comprises a solution circulation portion configured to recirculate the oxidizing solution discharged from the cleaning treatment portion to the sulfuric acid electrolytic portion through a recovery tank and a filter and resupply the oxidizing solution from the sulfuric acid electrolytic portion to the cleaning treatment portion through the tank.