超声波联合无机混凝剂对污泥脱水性能的影响

Effect of Ultrasonic and Inorganic Coagulants on Sludge Dewatering Process

以城市生活污水处理厂的剩余活性污泥为研究对象,开展超声波联合无机混凝剂PAFS对污泥脱水性能的影响研究,结果表明:两者有较好的协同效应,污泥的脱水性能明显改善。联用时两者的排列顺序对处理效果有明显影响,先超声后混凝联合方式明显优于先混凝后超声。超声波联用调理剂能有效减少混凝剂PAFS用量,提高脱水效率,降低成本。

This paper describes the application of ultrasonic technique and addition of inorganic coagulants to enhance dewatering of excess activated sludge from the municipal wastewater treatment plant.The experimental result reveals that the synergistic action of combined ultrasonic technique and PAFS,a kind of inorganic coagulant,significantly improve sludge dewaterability.It is also showed that the order of precedence for better dewatering result is ultrasonic application first then adding PAFS.