Description on the correlation of aerobic basin in activated sludge treatment system to secondary sedimentation basin from bioflocs breaking and incorporated in its mechanism were presented.

从生物絮体的破碎和结合机理，阐述了活性污泥法处理系统中曝气池和二沉池的相关性。

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In aerobic wastewater treatment system, large amount of complicated ingredient sludge are formed. If not being disposed properly, the sludge can cause secondary pollution to environment.

好氧生物处理会产生大量的、成分复杂的剩余污泥，如果处置不当容易造成二次污染。

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