Sulfuric acid electrolytic cell and a sulfuric acid recycle type cleaning system applying the sulfuric acid electrolytic cell

A sulfuric acid electrolytic cell to electrolyze sulfuric acid, comprising an anode compartment and a cathode compartment to which said sulfuric acid is supplied, a diaphragm, with said anode compartment and said cathode compartment being separated by said diaphragm, a cathode provided in said cathode compartment, and a conductive diamond anode provided in said anode compartment, wherein:

• said conductive diamond anode comprises a conductive diamond film formed on a surface of a conductive substrate;
• a rear face of said conductive substrate is pasted, with conductive paste, on a first current collector comprising a rigid body with a size equal to, or larger than, said conductive substrate;
• an anode compartment frame constituting said anode compartment is contacted via a first gasket with a periphery on a side of said conductive diamond film of said diamond anode;
• said diaphragm is contacted with a front face of said anode compartment;
• with a front face of said diaphragm, a cathode compartment frame constituting said cathode compartment, a second gasket, and said cathode, are contacted in sequence;
• a rear face of said cathode is pasted with conductive paste to a second current collector comprising a rigid body with a size equal to, or larger than, said cathode;
• and
• electric power is supplied from said first current collector to said second current collector via said conductive paste.