摘要：

采用慢速滴碱法制备出新型无机絮凝剂聚合氯化钛（PTC）。采用FT-IR、SEM对其结构进行了表征，并研究了碱化度、pH、PTC投加量、温度、共存离子对PTC混凝处理水中F^-效果的影响。结果表明，当pH为3~4，碱化度为1.5，PTC投加量（以Ti计）为1 000 mg/L时，混凝处理效果最好，F^-去除率在95%以上。将其应用于实际水样，处理后水中F^-含量符合国家排放标准的要求。

关键词: 无机絮凝剂, 聚合氯化钛, 混凝, F^-

Abstract:

A novel inorganic flocculant, poly-titanium chloride(PTC), was prepared by using slow dropping alkali method, and characterized by FT-IR and SEM. Then this study investigated the influences of basicity, pH, temperature, PTC dosage and co-existing ions on the coagulation effect of F^-. The results showed that the removing rate of F^- is over 95%, when the optimal conditions were as follows:pH of 3-4, the basicity of 1.5 and the dosage (in terms of titanium) of 1 000 mg/L. At last, the optimal conditions were applied to remove F^- in practice, and the treated F^- content meeted the national emission standard.

Key words: inorganic coagulant, poly-titanium chloride (PTC), coagulation, fluoride ion

中图分类号: 

• X703