饮用水水源中锑、砷、铊的综合去除方法研究

Comprehensive removal method of Sb,As and Ti from drinking water source

采用混合预氧化和强化混凝方法处理Sb、As和Ti质量浓度分别为20，25和20μg／L的模拟水源水。经过分析得到最佳的综合处理条件为：高锰酸钾投加量0．50～1．00mg／L，次氯酸钠投加量1．00～1．50mg／L，聚合硫酸铁投加量30mg／L，pH值6．0。将该方法应用到受污染的饮用水水源（Sb≤20μg／L、As≤25μg／L、Ti≤0．20μg／L）常规处理工艺中，Sb、As和Ti的质量浓度分别由原来的16．2，8．1和0．15μg／L降至3．9，2．8和0．06μg／L，去除率分别为75．9％，84．5％和60．0％，该方法可为应对饮用水水源污染突发事件采取经济可行的应急措施提供参考。

The mixed pre-oxidation and enhanced coagulation were adopted for the artificial source water with Sb, As and Ti （Sb =20 μg/L, As =25 μg/L, Ti =20 μg/L）. According to the analysis, the optimal comprehensive treatment condition was 0.50 to 1.00 mg/L of KMnO4, 1.00 to 1.50 mg/L of NaC10 and 30 mg/L of PFS. The pH was 6.0. By using this method on the conventional treatment process of the contaminated drinking water source（Sb ≤20 p,g/L,As ≤25 p,g/L、Ti ≤0.20 μg/L）, the concentrations of Sb, As and Ti were reduced from 16.2,8.1 and 0.15 μg/L to 3.9,2.8 and 0.06 μg/L respectively. The removal rates were 75. 9%, 84. 5% and 60. 0% respectively. This method also provided a good reference on the economically feasible emergency measures to the sudden pollutions in drinking water source.