WATER TREATMENT METHOD FOR EFFECTIVELY UTILIZING EXHAUST GAS

PROBLEM TO BE SOLVED: To provide a water treatment method for effectively utilizing an exhaust gas promoting a dechlorination process by an anaerobic UV reaction, a dechlorination reaction by a UV/O3reaction and an ozone reaction such as the cleavage of a double bond or the like utilizing oxygen having a high concentration and nitrogen generated in a PSA oxygen generator. SOLUTION: When water to be treated containing a hardly decomposable organic material is treated by an anaerobic UV reactor 23 and a UV/O3reactor 24, in a highly concentrated ozone generator 30, air pressured by an air compressor 31 is ventilated to one adsorption column 32a of the PSA oxygen generator 32, highly purified oxygen in which nitrogen is adsorbed by the adsorption column 32a is supplied to an ozone generator 33, while generating ozone, another adsorption column 32b of the PSA oxygen generator 32 is regenerated to carry out desorption of a nitrogen gas, the adsorption column 32a adsorbing nitrogen and the adsorption column 32b carrying out desorption of nitrogen are properly switched to continuously generate ozone and the nitrogen gas, ozone is supplied to the UV/O3reactor 24, and the nitrogen gas is supplied to the anaerobic UV reactor 23. COPYRIGHT: (C)2006,JPO&NCIPI