| 摘要 |
Ozone washing water is produced by injecting an ozone gas into washing water which is filtrated water produced by filtrating untreated water through a membrane, is pressurized and can be used for backwashing, and then the ozone washing water is supplied to a membrane from a secondary filtration side to remove fouling substances present in the membrane and to generate ozone-containing bubbles on a primary filtration side to remove fouling substances present on the primary filtration side surface of the membrane. |
