采用曝气生物滤池作预处理对絮凝剂投加量的影响

The influence of biology aerated filtering pool for pretreatment on the flocculating agent

以聚合氯化铝PAC为絮凝剂,抽取珠江原水,分别直接投加和经过曝气生物滤池处理后再投加絮凝剂,对比两种情况下的絮凝剂投加量.结果表明,在沉淀池出水浊度基本相同的情况下,经过曝气生物滤池处理后絮凝剂投加量大为减少.曝气生物滤池在作为深度净水工艺的预处理时对减少絮凝剂投加量有一定作用.

There are two situations of putting polyaluminium chloride （PAC） as the flocculating agent into the water which comes from Zhujiang River and putting PAC into the water which has been decontaminated by the biology aerated filtering pool. Their dosages of the flocculating agent are compared. Research shows that when the effluent of the settling has the similar turbidity there are fewer dosage of the flocculating agent when putting PAC into the water which has been decontaminated by the biology aerated filtering pool. It proves that the biology aerated filtering pool for pretreatment of deep water-supply treatment can reduce the dosage of the flocculating agent.