The effects of Al3+ left from wastewater pretreatment on the activated sludge treatment system performance were determined using comparative data of sludge flocculation/settling and COD and NH+4-N removal rates.

• 从活性污泥的絮凝特点、有机物与NH4+-N的微生物代谢过程等方面探讨前处理残余铝对曝气池活性污泥的影响规律。