高矿化度矿井水处理技术应用现状

Application status of mine water treatment technology with high salinity

针对我国高矿化矿井水处理应用技术现状进行综述,分析了高矿化度矿井水回用途径及相应的处理工艺与水质要求,并对高矿化度矿井水的处理关键工艺单元进行分析,主要从技术本身的特点、适应性及处理效果等方面进行讨论。重点介绍了常规处理工艺的混凝沉淀和过滤技术,深度处理工艺的电渗析和反渗透技术,零排放处理的浓缩和结晶技术。结果表明,常规处理和深度处理工艺技术较成熟,且在高矿化度矿井水处理中应用广泛。虽然浓缩和结晶工艺已有一定工程实践,但由于受投资和运行成本等因素制约,高矿化度矿井水的零排放工程案例较少,因此,今后在高矿化度矿井水零排放工程实践中,应针对矿井水水质和分盐结晶资源化利用等要求选择合适的零排放工艺。

The application treatment technology in mine water of high mineralized in China was summarized.The reuse ways of high salinity mine water and the treatment technology and water quality requirements were analyzed.The key process units of high salinity mine water treatment were analyzed from the aspects of technology characteristics,adaptability and treatment effect.The coagulation sedimentation and filtration technology of conventional treatment process,electrodialysis and reverse osmosis technology of advanced treatment process,concentration and crystallization technology of zero discharge treatment were introduced.The results show that the conventional treatment and advanced treatment technology has been relatively mature and widely used in the treatment of high salinity mine water.Although the concentration and crystallization process has a certain engineering practice,due to the constraints of investment and operation cost,there are few zero discharge engineering cases of high salinity mine water.Therefore,in the future,in the practice of zero discharge engineering of high salinity mine water,the appropriate zero discharge process should be selected according to the requirements of mine water quality and salt crystallization resource utilization.