用煤矸石和鼓风炉淤泥制备聚硅酸铁铝混凝剂

Preparation of Polysilicate Aluminum Ferrite Coagulant from Coal Gangue and Blast Furnace Sludge

研究了以煤矸石和鼓风炉淤泥为原料、在常压条件下制备高效混凝剂聚硅酸铁铝的方法 ,确定了合理的生产工艺和操作条件。用该混凝剂处理实际废水 ,并与聚合硫酸铁的处理效果进行比较 ,结果表明 ,出水COD和色度去除率均提高约 30 % ,SS去除率提高约 10 %。

A process for preparing polysilicate aluminum ferrite coagulant from coal gangue and blast furnace sludge under normal pressure has been studied,determining the reasonable production craft and operating conditions.The coagulant was tested in real wastewater treatment and compared with polyferric sulfate,proving that the removal rates of effluent COD and color were increased all by 30%,and that of SS by about 10%.The reaction mechanism of the coagulant in wastewater treatment was also explored.