论文部分内容阅读
研究了湿式氧化处理对模拟制药废水的处理效果,并探究其对后续生化处理效果的影响。实验使用的模拟头孢制药废水含有1.5 g/L的7-ACA、0.5 g/L的头孢曲松钠以及1 m L/L的DMF,COD平均浓度为2 650 mg/L。实验的湿式氧化部分采用了WAO和WPO两种工艺,后续生化处理使用SBR工艺。实验结果得出,WAO工艺的最优工况为:温度210℃、p H=7、氧气分压2 MPa、反应时间3 h,得出的COD去除率为67.8%;WPO工艺的最优工况为:温度150℃、p H=7、双氧水投量为计算理论值、反应时间1 h,得出的COD去除率为70.8%。经湿式氧化工艺处理后的模拟废水再进入SBR反应器,出水COD去除率可达80%,并且SBR的负荷也得到了提高。
The effect of wet oxidation treatment on simulated pharmaceutical wastewater was studied and its effect on subsequent biochemical treatment was investigated. The simulated cefazone wastewater used in the experiment contained 7-ACA at 1.5 g / L, ceftriaxone at 0.5 g / L and DMF at 1 m L / L, with an average COD concentration of 2 650 mg / L. Experimental wet oxidation part using WAO and WPO two kinds of technology, follow-up biochemical treatment using SBR process. The experimental results show that the optimum conditions of WAO process are as follows: temperature 210 ℃, p H = 7, partial pressure of oxygen 2 MPa and reaction time 3 h, the COD removal efficiency is 67.8% Conditions: temperature 150 ℃, p H = 7, the amount of hydrogen peroxide to calculate the theoretical value, the reaction time 1 h, the COD removal rate was 70.8%. The simulated wastewater treated by the wet oxidation process re-enters the SBR reactor, the effluent COD removal rate can reach 80%, and the SBR load has also been increased.