活性污泥二次污染问题的探讨

讨论了城市污水经过A／O工艺处理时活性污泥的二次污染问题。所采用的方法是将原水、处理后的出水及活性污泥用乙酸丁酯萃取、萃取相经过真空浓缩后，采用GC／MS测定了样品中的有机化合物。结果表明，在A／O工艺处理城市污水过程中，活性污泥的吸附作用是主要的，降解作用是次要的：A／O工艺所排放的活性污泥仍然是一种危险的污染物。

Study on the Second Pollution of Active Sludge

The second pollution of the active sludge was discussed in municipal wastewater treatment with method of the A/O.The experimental method was that the samples of the primary water,the treated water and the active sludge were prepared by means of extraction of n butyl acetate as the extraction agent,enrichment under vacuum,and then the organic substances in the samples were determined by the GC/MS.The results showed that the sorption was primary and degradation was second of the active sludge.The active sludge was still a dangerous contaminant.