高锰酸钾除锰技术在高原地表水厂的应用研究

Study on Application of Manganese Removal Technology by Potassium Permanganate in Plateau Surface Water Treatment Plant

针对特定高原锰微污染地表水,在不改变常规混凝沉淀工艺条件下,进行了应急水处理试验。在混凝沉淀烧杯试验的基础上,对几种除锰药剂的效果进行了对比,结果表明投加适量的高锰酸钾除锰效果较好。在原水中锰质量浓度为0.2~0.3 mg/L、高锰酸钾添加量与原水中锰含量的质量比为(1.5~2.0)∶1.0的条件下,除锰后的水样中锰质量浓度<0.05 mg/L,达到了国家标准《生活饮用水卫生标准》(GB 5749—2006)的要求。

In connection with the problem of manganese micro-polluted surface water in a specific plateau,an emergency water treatment test is carried out without changing the conditions of the conventional coagulating sedimentation process.On the basis of the coagulation sedimentation beaker test,the effects of several manganese removal agents are compared,and the results show that the effect of adding appropriate amount of potassium permanganate to remove manganese is better.Under the condition that the mass concentration of manganese in the raw water is 0.2 to 0.3 mg/L,the mass ratio of the amount of potassium permanganate added to the manganese content in the raw water is(1.5 to 2.0)∶1.0,the mass concentration of manganese in the water sample after removing manganese is<0.05 mg/L,which meets the requirements of the national standard"Standards for Drinking Water Quality"(GB 5749—2006).