【摘要】 研究在鼓风炉铁泥中加入适量的粉煤灰和助溶剂HS ,在 90℃温度下搅拌浸取 2 .5h后 ,制得集物理吸附和化学混凝为一体的混凝剂。这种混凝剂与PSA絮凝剂配合用于制革和纺织印染废水的处理 ,与传统混凝剂相比 ,COD和色度的去除率均提高 30 %左右。其显著特点是混凝沉降速度快 ,污泥体积小 ,处理废水费用低 ,并结合显微照片探讨了混凝剂对废水的混凝沉降机理。更多还原

【Abstract】 A blast furnace iron sludge-based coagulant combining the capabilities of both physical adsorption and chemical coagulation has been prepared by adding a small amount of fly ash and an appropriate amount of helping solvent(HS)to blast furnace iron sludge,generated during the blast furnace gases,and then the resulting mixture being stirred and extracted with a dilute H 2SO 4 for 2.5 h at 90 ℃.This coagulant thus was used as to treat various kinds of industrial wastewaters,the removal rates of COD and color increase by about 30 % respectively.Its remarkable characteristics is a higher rate of settlement,a smaller volume of sludge,and a lower cost of treatment.The coagulation mechanism of the coagulant in the treatment of wastewaters has been studied.更多还原