臭氧+曝气生物滤池深度处理工艺试验研究

Study on Advanced Treatment of Ozone + Biological Aerated Filter

针对某污水厂出水不达标的情况,本研究采用臭氧(O3)和曝气生物滤池(BAF)组合工艺对其进行深度处理。结果表明,当采用两级臭氧+曝气生物滤池工艺时,出水COD在31~46mg/L,色度在13~29倍,均达到一级A排放标准。在最佳运行条件下,臭氧氧化使相对分子质量大于50000的有机物含量减少10%,小于1000的有机物含量增加14%。曝气生物滤池工艺使相对分子质量小于1000的有机物含量降低了24%。

The effluent of a sewage plant failed to meet the level of A standard.This research adopts the ozone(O3) and biological aeration filter(BAF) process for advanced treatment.Research results show that when using two stage ozone and biological aeration filter process,the effluent COD is between 31 to 46mg/L,chromaticity in 13 ~ 29 times,achieving the level of A standard.Under the optimum conditions,the content of organics whose relative molecular mass was greater than 50 000 has been decreased 10%,and those lower than 1 000 has been increased 14% by ozone oxidation.The content of organics whose relative molecular mass was lower than 1 000 has been decreased 24% by BAF.