According to the variations of COD, BOD5, combined with the microscopic observation in experiment and blank buckets, the maximum allowable concentrations of residual chlorine and five organic chlorides to activated sludge were obtained.

• 通过检测对照桶和试验桶中化学需氧量(COD)、生化需氧量（BOD_5)的变化结合镜检结果,得出余氯及五种有机氯化物对活性污泥的最高允许浓度。