臭氧对酸性黑ATT废水降解效果的研究

Study on Degradation Efficiency of Wastewater of Acid Black ATT by Ozone

研究不同条件下臭氧对偶氮染料酸性黑ATT废水的降解效果。实验表明:(1)对于某种浓度的臭氧,在一定的接触反应时间范围内,化学需氧量(COD)去除率随接触反应时间增加而增加;(2)增加臭氧浓度可提高降解反应速度,减少反应时间;(3)在酸性条件下臭氧对降解酸性黑ATT废水没有明显促进作用.而在碱性条件下臭氧可以提高降解反应速度。

Degradation efficiencies of wastewater of Acid Black ATT by ozone under different conditions were investigated. The results are as follows： For ozone with a certain concentration, removal of chemical oxygen demand （COD） increases along with contact time within a certain range; The degradation speed increases by increasing the concentration of ozoneas well as reduction of reaction time; Degradation efficiency of wastewater of Acid Black ATT by ozone can＇t been affected by acidic conditions. In contrast, the rate of degradation reaction increases under alkaline.