CHLORINE DIOXIDE WATER PRODUCTION DEVICE

PROBLEM TO BE SOLVED: To provide an inexpensive, compacted and simplified two-liquid type chlorine dioxide production device where the system is simplified, further, even at the time when the introduction of a reaction mixed liquid into a water feed line is stopped, the corrosion of the water feed line caused by gaseous chlorine dioxide can be prevented, and an automatic operation is possible. SOLUTION: Regarding the production device: in case of an emergency stop of water intake from a water service W, a solenoid stop valve 12 is closed, and further, respective variable metering pumps 24, 26 feeding each aqueous solution to a reaction mixer 21 are stopped; in the case the liquid quantity in a chlorine dioxide water tank 31 is reduced to the lower limit value or below, a variable metering pump 33 feeding chlorine dioxide water to a user U is stopped; and, in the case the liquid quantity in the chlorine dioxide water tank 31 is increased to the upper limit value or above, and/or at least either the liquid quantity in a chlorite aqueous solution tank 22 or the liquid quantity in an acid aqueous solution tank 23 is reduced to the lower limit value or below, the respective variable metering pumps 24, 26 are stopped, and further, after the passage of a fixed time from their stop, water supply is cut off. COPYRIGHT: (C)2006,JPO&NCIPI