SAC催化臭氧深度处理食品酵母发酵废水效能研究

摘要

After the food yeast fermentation wastewater has been treated by the combined process ,anaerobic expand-ed granular sludge bed(EGSB)-aerobic membrane bioreactor (MBR),the organic substances content is still rather high,It needs to be further treated in depth. The advanced purification efficiency of MBR effluent by three kinds of processes,including sludge-based activated carbon (SAC) adsorption,single ozonation and SAC catalytic ozonation,are investigated and compared. The change situation of the organic pollutants are determined by UV spectral analysis. The experimental results show that the organic substance removing efficiency by SAC catalytic ozonation process is obviously higher than that by single ozonation ,especially. It is more obviously so ,especially in the initial reaction stage. The analytical results by UV spectrum show that SAC catalytic ozonation process has good removing effects on aromatic compounds ,organic substances with conjugated bonds and chroma.%食品酵母发酵废水经过厌氧膨胀颗粒污泥床（EGSB）－好氧膜生物反应器（MBR）组合工艺处理后，有机物含量依然较高，需要进一步深度处理。对比考察了污泥基活性炭（SAC）吸附、单独臭氧氧化与SAC催化臭氧氧化三种工艺对MBR出水的深度净化效能，并通过紫外光谱分析来确定有机污染物的变化情况。实验结果表明，SAC催化臭氧氧化工艺对有机物的去除效率明显优于单独臭氧氧化，尤其在反应初期较为明显。紫外光谱分析结果表明SAC催化臭氧氧化工艺对废水中芳香族化合物、具有共轭双键的有机物及色度具有良好的去除效果。