O_(3)/H_(2)O_(2)工艺去除脱硫废水中COD的性能研究

O_(3)/H_(2)O_(2)高级氧化技术具有氧化能力强和无选择性等优点,被广泛用于高浓度、难降解和有毒有害的有机废水处理。考察了O_(3)/H_(2)O_(2)工艺在不同条件(H_(2)O_(2)投加量、pH、反应时间)下对脱硫废水中COD去除的影响。结果表明:H_(2)O_(2)为0.02 mg/L时去除效果最好,但随着用量的增加,效果逐渐变差;当废水pH为12时COD去除效果最好;当反应时间为1 min时,可达到COD低于90 mg/L的效果。

O_(3)/H_(2)O_(2) advanced oxidation technology has the advantages of high oxidation capacity and non-selectivity,and is widely used for the treatment of highly concentrated,difficult to degrade and toxic and hazardous organic wastewater.The effect of O_(3)/H_(2)O_(2) process on the removal of COD from desulphurization wastewater under different conditions(H_(2)O_(2) dosage,pH value and reaction time)was investigated.The results showed that the best removal effect was achieved when the H_(2)O_(2) was 0.02 mg/L,but the effect became gradually worse with the increase of dosage;the best COD removal effect was achieved when the pH value of wastewater was 12;and the effect of COD lower than 90 mg/L could be achieved when the reaction time was 1 min.