| 摘要 |
PROBLEM TO BE SOLVED: To provide a treatment method of organic waste water capable of efficiently treating the organic waste water including dissolved oxygen and formaldehyde.SOLUTION: Treated waste water discharged from a UASB reaction tank 1 is mixed with raw waste water of organic waste water that includes dissolved oxygen and formaldehyde and that is supplied to the UASB reaction tank 1 so as to lower a dissolved oxygen concentration in the raw waste water. Then, anaerobic treatment of the mixed waste water of the raw waste water and the treated waste water is performed in the UASB reaction tank 1. |
