It showed that, the formation process of floc consisted of four stages; bacteria multiplication; floccule forming; floccule polymerizing and the phase of the floe coming into being.

• 结果显示：反应器活性污泥凝絮体的形成过程经历了4个阶段，即细菌增殖阶段、絮状体形成阶段、絮状体聚合阶段、凝絮体形成阶段。