锰砂和硅碳素联合处理低铁高锰地下水

摘要

目的 探讨低铁高锰地下水处理的最佳方法.方法 通过一级锰砂、二级硅碳素、锰砂和硅碳素串联三种不同的处理方式,采用两根串联的有机玻璃柱,以模拟含铁锰地下水为处理对象,对比其处理效果.结果 当进水锰质量浓度在2.0 mg/L左右,铁质量浓度在0.5 mg/L左右,温度在13 ～14℃,pH在6.4,溶解氧(DO)在3.9～4.0mg/L时,锰砂和硅碳素串联的出水效果最好.结论 单独使用一级锰砂滤柱,出水铁可以达标,但出水锰不能达标；单独使用二级硅碳素滤柱时,铁锰可同时达标,但维持时间短暂；两者串联使用时,铁锰可同时在较长时间内维持达标.对于低铁高锰的地下水,锰砂和硅碳素串联的处理方式经济高效.%The purpose of this paper is to study the best method of iron and manganese removing in ground-water with low iron and high manganese by adopting first-level manganese sand,two-level ANJ. Sic and the two series. The experiment analyses the effect of the effluent when using two connected plexiglass columns in series to simulate the raw ground-water containing iron and manganese as the processing object on the condition of 13 ~ 14 ℃,pH at 6.4,dissolved oxygen(DO)at 3.9 -4.0 and the enter manganese density a-bout 2.0 mg/L,the enter iron density about 0.5 mg/L. The conclude shows that when uses manganese sand filtration column alone,the iron of the effluent can reach die standard but die manganese can not;when uses the ANJ. Sic filtration column alone,both the iron and manganese can be qualified but time is short;For the two series,the standards time expand. For the groundwater with low iron and high manganese,the effect of die two-stage filtration is better,and the adaptation scope is broad with temperature pH and dissolved oxygen.