MBR+臭氧+BAF工艺在工业废水处理中的应用

Application of MBR + Ozone + BAF Process in Industrial Wastewater Treatment

摘要:

南方某污水处理厂的一期工程规模为2.5×10⁴ m³/d，采用“水解酸化+卡鲁塞尔氧化沟”工艺，执行国家二级排放标准。在扩建及提标改造工程中，采用MBR工艺对一期工程进行提标改造，并采用“MBR+臭氧接触氧化+曝气生物滤池”的组合工艺应用于工业废水的处理，改造完成后污水处理厂出水执行一级A排放标准。基于对改造后各段出水水质的分析，研究了MBR工艺在污水处理厂提标改造和工业废水处理中的应用价值。研究结果表明：改造完成后污水处理厂一期工程和二期工程的出水稳定达标，臭氧接触和曝气生物滤池组合深度处理对COD_cr和TP的平均去除率能够达到32.34%和39.50%，表明“MBR+臭氧+曝气生物滤池”工艺适用于工业废水处理提标改造工程。

Abstract:

The scale of the first phase of a wastewater treatment plant (WWTP) in southern China is 2.5×10⁴ m³/d. Its process is the hydrolytic acidification + Carrousel oxidation ditch process, and the national secondary discharge standards are implemented. In the expansion and upgrading reconstruction project, the MBR process is used to upgrade and reconstruct the first phase of the project, and the combined process of MBR+ ozone contact oxidation + biological aerated filter is used to treat the industrial wastewater. After the reconstruction, the effluent of WWTP is discharged according to the level-A standard. Based on the analysis of the effluent quality of each section after being reconstructed, the application value of MBR process in upgrading reconstruction of WWTP and treatment of industrial wastewater is studied. The results show that after the reconstruction, the effluent of the first phase and second phase projects of the WWTP is stable and up to the standard. The average removal rate of COD_cr and TP by the combined advanced treatment of ozone contact and biological aerated filter can reach 32.34% and 39.50%, which indicates that the MBR+ ozone + biological aerated filter process is suitable for the upgrading reconstruction project of industrial wastewater treatment.