Abstract:

Polysilicate aluminum was prepared. from fly ash in coal-fueling power plant, and used as defluorider and coagulant in the treatment of fluoride wastewater in coal-fueling power plant by chemical deposition, complexation, agglomeration and flocculation. The results show that this method is more simple for operation and has lower operational cost. Furthermore, this wastewater can be treated by waste.

Key words: coal-fueling power plant, fly ash, PSAA coagulant, fluoride-containing wastewater

摘要：

采用燃煤电厂的粉煤灰作原料制备聚硅酸铝（PSAA）混凝剂，通过化学沉淀、络合、凝聚和絮凝等反应来处理电厂含氟废水。结果表明，本法处理含氟废水工艺简单、操作方便、成本低廉，并可达到以废治废的目的。

关键词: 燃煤电厂, 粉煤灰, PSAA混凝剂, 含氟废水