论文选用M-RO2521超低压反渗透膜和M-N2521纳滤膜对矿井水中营养组分和重金属离子的分离效果进行了实验研究,实验考察了操作压力、温度和水回收率等因素对分离效果的影响.结果表明:反渗透膜对重金属离子及营养组分的平均截留率分别为97.5％和97％；纳滤膜对重金属离子及营养组分的平均截留率分别为92.75％和33.63％；在一定的操作条件下,组合工艺ULPRO+NF对矿井水营养组分和重金属离子的平均截留率均达97％以上,同时具有更高的水回收率.%The experimental study of mine water is conducted by a commercial ultra-low pressure reverse osmosis membrane (M-RO2521) and nanofiltration membrane (M-N2521). The effects of operating pressure, operating temperature and ratio of water callback on the performance of reverse osmosis membrane, nanofiltration membrane and combination process (ULPRO+NF) were investigated. Experiment results show that an average removal efficiency of heavy metal ions and nutrients by reverse osmosis membrane were 97.5 % and 97 % respectively; an average removal efficiency of heavy metal ions and nutrients by nanofiltration membrane were 92.75 % and 33.63 % respectively; however, an average removal efficiency of heavy metal ions and nutrients by combination process are more than 97 % and also have a higher water recovery.
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