PROCESSING SYSTEM OF INK DISCHARGE WATER

摘要

PROBLEM TO BE SOLVED: To realize water processing system in which ink discharge water is efficiently decolorated, clarified, and can be recycled as intermediate water.SOLUTION: In a processing system, ink discharge water including a pigment is processed to generate intermediate water. The processing system includes a first treatment part 10 in which microfiltration is performed; and a second treatment part 30 in which filtration water is made to contact with ozone. The first treatment part 10 includes: a storage tank 11; a microfiltration unit 12 that is slightly smaller than the storage tank 11; a water sending path 19 in which the filtration water is sent to the second treatment part 30; and a suction pump 20 in which a downstream of the microfiltration unit 12 is decompressed. The concentrated ink discharge water is intermittently drained from the storage tank 11.