摘要: The report documents a long term performance study of two iron removal watertreatment plants to removal arsenic from drinking water sources. Performance information was collected from one system located in the midwest for one full... 展开 The report documents a long term performance study of two iron removal watertreatment plants to removal arsenic from drinking water sources. Performance information was collected from one system located in the midwest for one full year and at the second system located in the farwest for nine months. The study involved the collecting of weekly water samples through each treatment train. Every fourth week, the water samples were speciated for As III and As V. The midwest plant treated a ground water having an average arsenic concentration of 21 ug/L of which about 75% was As III. The second plant treats mining tunnel water that had an average arsenic level of 49 ul/L and an iron concentrations of 1.1 m/L. 收起