These strains include five Genus, such as Pseudomonas, Micrococcus, Zoogloea, etc, of which seven strains come from aeration tank, others come from sedimentation tank.

• 其中7种菌株来源于曝气池，5种菌株来源于沉淀池，分别属于假单孢菌属、微球菌属、动胶菌属等5个细菌属。