Chlorine dioxide production device and chlorine dioxide production method

A chlorine dioxide production device comprising:

• a diaphragm electrolytic cell including an anode chamber and a cathode chamber and configured to effect an electrolytic treatment on anolyte solution containing chlorite supplied to the anode chamber for generating chlorine dioxide;
• a flow path section communicating the anode chamber to the cathode chamber;
• a discharge section communicating the cathode chamber to the outside;
• an aerating means for supplying aeration gas to the anolyte solution in the anode chamber with allowing adjustment of its supply amount;
• and
• a neutralizing means for supplying a neutralizing agent to at least one of the cathode chamber and the discharge section;
• wherein the anolyte solution is subjected to the electrolytic treatment in the anode chamber to generate chlorine dioxide, the generated chlorine dioxide is collected by supplying the aeration gas to the anolyte solution in the anode chamber by the aerating means, the anolyte solution after the electrolytic treatment and the aeration treatment in the anode chamber flows through the flow path section into the cathode chamber to be subjected to an electrolytic treatment as a catholyte solution therein and then subjected to a neutralization treatment in at least one of the cathode chamber and the discharge section,
• the flow path section includes a deaeration tank,
• the discharge section includes a neutralization tank, and the neutralizing means supplies the neutralizing agent to the neutralization tank, and
• the aerating means supplies the aeration gas to each of the anode chamber of the diaphragm electrolytic cell, the deaeration tank and the neutralization tank.