含高浓度铁锰地下饮用水处理技术分析

Analysis on Treatment Technology of Underground Drinking Water with High Concentration of Iron and Manganese

含高铁锰地下水危害较大,以北方地区典型工程项目为例,开展含高浓度铁锰地下饮用水处理技术研究。先后采用曝气接触过滤氧化法和生物除锰法去除高铁高锰含量的地下水,在运行过程中仍然出现铁锰含量超标的现象。如果工艺进行大的调整,将花费较高的成本。经分析,采用调整锰砂滤料形状的方法提高滤料的表面积,进而实现提高地下水铁锰去除率。滤料改善前后,较改善滤料前出水铁和锰含量平均减少分别为32.8%和31.6%,实现水质达标。

Groundwater containing high concentration of iron and manganese is harmful.It is of great significance to study the treatment technology of underground drinking water with containing high concentration of iron and manganese,taking a typical project in northern China as an example.The groundwater containing high iron and manganese was treated removed by aeration contact filtration oxidation method and biological manganese removal method in turn,and the content of iron and manganese still exceeded the standard during operation.If the process was greatly adjusted,the cost would be higher.It was found that the surface area of filter media was increased by adjusting the shape of manganese sand filter material,and the removal rate of iron and manganese in groundwater was improved.After the improvement of the filter material,the iron and manganese contents decreased by 32.8% and 31.6% respectively compared with those before the improvement of filter media,and the water quality reached the standard.