ClO2催化氧化处理土霉素废水处理站二级出水

以土霉素废水处理站二级出水为研究对象,二氧化氯(ClO2)为氧化剂,以自制活性炭负载铜氧化物(CuOx-AC)催化剂进行ClO2催化氧化试验研究。试验结果表明,ClO2催化氧化最佳反应条件为初始反应pH值为7.0、ClO2投加量为0.24g/L(折纯,质量浓度)、催化剂投加量为50g/L(质量浓度)和反应时间为30min。在此条件下,废水COD的质量浓度由472.7～523.4mg/L降至301.2～340.1mg/L,COD去除率在35%左右,但废水B/C值由0.04～0.07提高至0.21～0.24,可生化性显著提高,为进一步采取生化处理工艺实现废水达标排放奠定了基础。

Treatment of secondary effluent of oxytetracycline wastewater treatment plant by chlorine dioxide catalytic oxidation

Secondary effluent of oxytetracycline wastewater treatment plant is treated by ClO2 with CuOx-AC as catalyst.The results show that the optimal reaction conditions are as follows: pH value 7.0,ClO2 dosage 0.24 g/L,catalyst dosage 50 g/L and reaction time 30 min.Under these conditions,COD is decreased from 472.7～523.4 mg/L to 301.2～340.1 mg/L and the removal efficiency is about 35%.The B/C value is increased to 0.21～0.24 from 0.04～0.07,and the biodegradability is improved,which is beneficial to further biological treatment and to meet the discharge standards.