| 摘要 |
PROBLEM TO BE SOLVED: To reduce COD of triethanolamine-containing waste liquid.SOLUTION: An oxidizing agent is added to triethanolamine-containing waste liquid, the pH of the waste liquid is controlled to fall in an alkaline region, and when decrease of oxidation reduction potential stops, the pH of the waste liquid is controlled to fall in an acidic area.SELECTED DRAWING: None |
