【摘要】 根据某水厂常规处理工艺设计中试装置,以受锑污染原水为试验水样,考察强化混凝去除水中锑的效果。结果表明,强化混凝可以取得较好的除锑效果,其最佳去除方案为:投加盐酸调节原水p H值至7.0;在絮凝池前,向原水中投加70 g/m3的粉末聚硫酸铁;滤后加氢氧化钠回调出水p H值,以满足《生活饮用水卫生标准》(GB 5749—2006)的p H值要求(6.5~8.5)。该方案对锑的平均去除率为(77.55±5.12)%,出水锑<5μg/L、总铁<0.3 mg/L,均满足水质标准。强化混凝方法简单、经济且安全,是切实可行的饮用水源水除锑技术。更多还原

【Abstract】 A pilot plant was designed according to the conventional treatment processes in a water treatment plant to investigate the removal efficiency of antimony from polluted raw water by enhanced coagulation. The results indicated that the enhanced coagulation could achieve good effect in removing antimony from water. The best scheme for removing antimony was as follows: adjusting p H value of raw water to 7. 0 by adding HCl,adding polyferric sulfate( PFS) of 70 g / m3 to raw water before flocculator,and re-adjusting p H value by adding Na OH after filtration so as to meet the Standards for Drinking Water Quality( GB 5749- 2006). By means of this method the average removal rate of antimony could reach as high as( 77. 55 ± 5. 12) %,and the concentrations of antimony and total iron in treated water were less than 5 μg / L and 0. 3 mg / L respectively,both meeting the standard mentioned above. It was also proved that enhanced coagulation can be considered as a practicable technology for removing antimony from drinking water sources due to its simple,economic and safe properties.更多还原